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2017Water Quality Report

YOUR

PAR

TNER

IN W

ATER

3

SaskWater is committed to ensuring a long term, sustainable, quality water supply to our customers.

5 SaskWater’s Potable Water Customers

and Water Sources

7 SaskWater’s Certified Operation

and Maintenance Customers

8 Treatment

Water Treatment Processes

Surface Water

Groundwater

Monitoring Requirements

11 2017 Drinking Water Quality –

SaskWater Owned Water Treatment Systems


Certified Operation and Maintenance

Water Treatment Systems

17 Transmission



SaskWater Owned Water Transmission Systems


Certified Operation and Maintenance

Water Transmission Systems

23 Information

Key Drinking Water Parameters and Effects

Explanation of Terms

Emergency Boil Water Orders

Precautionary Drinking Water Advisories

TABLE OF CONTENTS

5

SaskWater’s Potable Water Customers and Water SourcesSaskWater owns and operates nine water treatment plants serving municipalities and pipeline associations. Each treatment plant has a different source of water as described in the following table.

OWNED WATER TREATMENT SYSTEMS

Our water treatment plant located in… Draws water from this source… And delivers potable water to these major users…

Melfort Codette Lake on the North Saskatchewan River

Village of Beatty

Star City Farming Co. Ltd.

Town of Kinistino

City of Melfort

Town of Star City

Village of Weldon

Melfort Rural Pipeline Association

Edenwold Local Reservoir Village of Edenwold

Elbow Lake Diefenbaker Village of Elbow

Line 19 Water Pipeline Utility (Loreburn, Strongfield)

Gravelbourg Thomson Lake Town of Gravelbourg

Thomson Lake Regional Park Authority

Pierceland Local Aquifer Village of Pierceland

Wakaw South Saskatchewan River Village of Annaheim

Town of Bruno

Town of Cudworth

City of Humboldt

Village of Lake Lenore

Village of Muenster

Village of St. Louis

RM of St. Louis (Hamlet of Domremy, Hamlet of Hoey, Hamlet of St. Isidore-de-Bellevue)

Town of Wakaw

SHL Rural Pipeline Association

North Central Rural Pipeline Association

One Arrow First Nation

White City Zehner Aquifer Town of White City

Cupar Hatfield Aquifer Town of Cupar

Melville Hatfield Aquifer and

Crescent Creek Reservoir

City of Melville (Yorkville Public Utility Board)

6

SaskWater’s Potable Water Customers and Water SourcesSaskWater also owns and operates eight water transmission systems. Our transmission business buys water from the City of Saskatoon, the City of Regina and the Buffalo Pound Water Treatment Corporation and delivers it to customers.

OWNED WATER TRANSMISSION SYSTEMS

This transmission system… Purchases water from this supplier… And delivers potable water to these customers…

Buffalo Pound East City of Regina K+S Windsor Salt Ltd., Eastview Water Users Co-op, Town of Grand Coulee, Yara Belle Plaine Inc.

Buffalo Pound North Buffalo Pound Water Treatment Corporation

Arm River Farming Co. Ltd., Village of Bethune, Buffalo Plains Cattle Co., Country Springs Water Users, Village of Disley, Dufferin Water Association, Peaceful Springs Water Users, Qu’Appelle Valley Water Users Association, K+S Potash Canada Inc.

Buffalo Pound West Buffalo Pound Water Treatment Corporation

Eight Mile Pipeline Association Inc, Village of Marquis, Marquis Rural Water Users Inc., Parklane Waterline Inc., Parkview Water Users Inc., Village of Tuxford, Tuxford Rural Water Users Inc.

Saskatoon East City of Saskatoon Aberdeen Southwest Water Utility Board, Allan South Rural Water Utility, Town of Allan, Applewood Estates Utility Co-op, Bar K Ranch House Ltd., RM of Blucher (Sunset Estates), Village of Bradwell, Canlan Ice Sports (Jemini), Village of Clavet, Closed Creek Resources Inc., RM of Corman Park (Casa Rio/Wood Meadows/Grasswood), Cory Park Mobile City, Dundurn Rural Water Utility, Eighth Street Waterline Group Inc., Elstow North Rural Water Utility, English River Enterprises, Southeast Corman Park Rural Water Corp., GNC Bioferm Inc., Highway 394, Lost River Water Co. Ltd., Manhattan West, Meadowland Waterworks, Potash Corporation of Sask. Inc. – Allan Division, Potash Corporation of Sask. Inc. – Patience Lake Division, Prairie Plant Systems Inc., Saskatoon East School Division #41, Schro Arenas Ltd., South Yellowhead Water Corporation, University of Saskatchewan (Goodale Farms), East Floral Industrial Park Ltd., South Floral Water Corporation, SCS Water Group Inc., Teen Challenge Canada

Saskatoon North City of Saskatoon Akzo Nobel Chemicals Ltd., Richardson Milling, Murron Poultry Farms Ltd., RM of Corman Park (North Corman Industrial Park), Town of Dalmeny, Dalmeny West Water System Ltd., ERCO Worldwide, Town of Hague, Hidden Valley Dairy Farm, Intervalley Water Inc., City of Martensville, Town of Osler, Sask Valley Rural Water Utility, Wanuskewin Heritage Park, City of Warman, Village of Hepburn

Saskatoon West City of Saskatoon Burnco Rock Products Ltd., Chemtrade West Limited Partnership, O.P.Q. Holdings (Cory Park Esso), Potash Corporation of Sask. Inc. – Cory Division, Prairie Pride Chick Sales Ltd.

Saskatoon Northeast City of Saskatoon Town of Aberdeen, Highway 41 Water Utility, University of Saskatchewan (Kernen Farm)

Saskatoon Northwest Thatcher Avenue & 33rd St.

City of Saskatoon BizHub Developments Ltd, Yellowhead Industrial Park Water Corp., Brandt Tractor Properties Ltd., RM of Corman Park (Battleford Trail), Ministry of Central Services

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SaskWater’s Certified Operation and Maintenance Customers In addition to operating our own potable water systems, SaskWater also provides certified operation and maintenance (COM) services to communities and user groups across Saskatchewan.

COM WATER TREATMENT SYSTEMS

This water treatment plant located in… Is owned by…

Draws water from this source...

And delivers potable water to these major users…

Cochin Interlake Regional Water Board

Local Aquifer Village of Cochin, Hamlet of Days Beach, Hamlet of Trevessa Beach, Hamlet of West Chatfield, Hamlet of Summerfields Beach

Meota Jackfish Lake West Water Utility Corp.

Infiltration wells adjacent to the North Saskatchewan River

Village of Meota, Village of Metinota, RM of Meota, Hamlet of Lakeview, Hamlet of Suttons Beach

La Ronge Lac La Ronge Regional Water Corp.

Lac La Ronge Village of Air Ronge, Town of La Ronge, Lac La Ronge Indian Band

Vanscoy Village of Vanscoy South Saskatchewan River Village of Vanscoy

COM WATER TRANSMISSION SYSTEMS

This distribution system… Purchases water from this supplier… And delivers potable water to these customers…

Caron/Mortlach Regional Public Utility Board

SaskWater (via City of Moose Jaw) Village of Caronport, Hamlet of Caron, Village of Mortlach

North Central Rural Pipeline Association

SaskWater Various connections to the north and south of the Wakaw-Humboldt Regional Water Treatment Plant

Village of Elbow SaskWater Village of Elbow

Town of Star City SaskWater Town of Star City

Town of White City SaskWater Town of White City

Village of Air Ronge Lac La Ronge Regional Water Corp. Village of Air Ronge

Village of Edenwold SaskWater Village of Edenwold

8

Treatment

Water Treatment Processes

Water treatment removes natural and man-made contaminants from the source water so that it is safe and aesthetically pleasing. The treatment process for a surface water source (like a river or lake) differs from treatment for groundwater (drawn from an aquifer).

Surface Water

Generally, surface water treatment involves either conventional treatment, which consists of screening to remove debris, coagulation-flocculation, clarification or sedimentation, filtration, and disinfection; or membrane treatment, which consists of screening to remove debris, reverse osmosis membrane filtration, and disinfection to remove physical, chemical, microbial and other contaminants from the water.

Our treatment plants in Melfort, Wakaw, Gravelbourg, Edenwold, Melville and Elbow use these types of processes.

Groundwater

For groundwater, the treatment process generally consists of oxidation of iron, manganese and other minerals with aeration and/or other processes followed by detention, filtration and disinfection.

Our treatment plants in Pierceland, White City and Cupar use groundwater sources with this kind of treatment process.

In addition to treating surface water, our treatment plant in Melville also treats ground water. Following the typical oxidation and filtration process, the groundwater is desalinated using a process known as electrodialysis reversal and blended with the treated surface water.


SaskWater undertakes water quality testing as required by The Waterworks and Sewage Works Regulations, and by operating permits for our water treatment plants and distribution systems.

SaskWater monitors water quality to:

• assess and ensure the safety of the water for our customers

• assess the need for any process adjustments

• determine quality trends and identify potential concerns

We employ more than 60 provincially certified operators who monitor and maintain the quality of water from the initial source to the final point of delivery.

Our highly trained, dedicated operators, technicians, technologists and professional engineers keep abreast of technological changes, water quality, and any upgrading needs of our waterworks systems to meet ever-changing water quality standards and monitoring requirements.

SaskWater also monitors most of our facilities and customer facilities remotely. We have remote monitoring equipment installed in 55 locations, which we either own or operate, allowing continuous facility surveillance.

We monitor key water quality parameters, equipment operation and water levels, pressures and flows.

9

The following tables summarize some of the key monitoring and testing requirements SaskWater must meet at its owned and COM treatment plants for bacteriological parameters, chlorine residuals, turbidity, chemical, and health and toxicity parameters, as required by the Permits to Operate issued by the Water Security Agency.

OWNED WATER TREATMENT SYSTEMS

SaskWaterOwned WaterTreatmentSystem

Annual Volume in 2017 (m3)

Water SourceBacteriological

& Chlorine Residuals

Chlorine Residuals

at the Treatment

Plant

TurbidityGeneral

ChemicalHealth & Toxicity

Trihalomethanes(THM)

& Haloacetic Acids(HAA5)

Codette RWSS

1,122,830 Codette Lake 2 per week 2 per day Continuous1 every

3 months1 every

year2 every 3 months

in Jan, Apr, July, Oct

Cupar WTP

39,030 Hatfield Aquifer

1 per week 1 per day 1 per day1 every 2 years

1 every 2 years

Not required for groundwater

Edenwold WTP

18,709 Local Reservoir

1 per week 1 per day 3 per day1 every

3 months every 2 years

1 every 2 years

1 every 3 months in Jan, Apr, July, Oct

Elbow WTP

87,298 Lake Diefenbaker

1 per week Continuous Continuous1 every


1 every 2 years


Gravelbourg WTP

152,390 Thomson Lake 1 per week 2 per day Continuous1 every


1 every 2 years


MelvilleWTP

604,943

Hatfield Aquifer & Crescent

Creek Reservoir

1 per week Continuous Continuous 1 every 3 months

1 every year


Pierceland WTP

49,665 Local Aquifer 1 per week 1 per day 1 per day1 every 2 years

1 every 2 years


Wakaw-Humboldt RWSS

1,233,549 South Sask. River

3 per week 1 per day Continuous1 every

3 months1 every

year2 every 3 months

in Jan, Apr, July, Oct

White City WTP

358,963 Zehner Aquifer

1 per week 1 per day 2 per day1 every 2 years

1 every 2 years


10

SaskWaterOperated WaterTreatmentSystem

Water SourceBacteriological

& Chlorine Residuals

Chlorine Residuals

at the Treatment

Plant

TurbidityGeneral

ChemicalHealth & Toxicity



InterlakeWTP

Local Aquifer

2 per month 1 per day 1 per day1 every 2 years

1 every 2 years


JackfishLakeWTP

Infiltration wells adjacent to the North Sask. River

3 per week Continuous2 per day per filter

1 every 3 months

every 2 years

1 every 2 years


(THM only)

La RongeWTP

Lac La Ronge 2 per week Continuous Continuous1 every

3 months 1 every

year1 every 3 months in

Jan, Apr, July, Oct

VanscoyWTP

South Sask. River

1 per week Continuous Continuous1 every


1 every 2 years


COM WATER TREATMENT SYSTEMS

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2017 Drinking Water Quality – SaskWater Owned Water Treatment Systems Our governing standards direct us to meet or exceed the Saskatchewan Drinking Water Quality Standards for health-related potable water parameters.

Parameters Units

Saskatchewan Standards

& ObjectivesCodette

RWSSCupar WTP

Edenwold WTP

Elbow WTP

Gravelbourg WTP

Melville WTP

Pierceland WTP

Wakaw-Humboldt

RWSSWhite City

WTP

Regulatory Aesthetic

1. BACTERIOLOGICAL1:

Total Coliform 0 0 0 0 0 0 0 0 0 0

E. Coli 0 0 0 0 0 0 0 0 0 0Background Bacteria 0 0 0 0 0 0 0 0 0No. of Regular Bacteriological Tests Required 104 52 52 52 52 52 52 156 52

No. of Regular Bacteriological Tests Submitted 104 514 514 52 52 543 515 1556 52

2. CHLORINE RESIDUALS:

From samples submitted for bacteriological analysisFree Chlorine (Cl2) Residuals:

Minimum mg/L 0.12 1.02 0.77 0.55 0.79 0.99 1.56 0.72 0.30 0.76 Maximum mg/L 2.35 1.12 1.45 1.29 1.49 2.82 1.62 1.80 1.13 Average mg/L 1.77 0.95 0.93 1.01 1.19 2.12 1.17 1.11 0.91Total Chlorine (Cl2) Residuals:

Minimum mg/L 0.52 1.28 0.86 0.98 1.01 1.08 1.83 0.92 0.49 1.04 Maximum mg/L 2.60 1.31 2.72 1.53 1.53 3.53 1.97 1.95 1.67 Average mg/L 2.00 1.05 1.75 1.23 1.27 2.49 1.44 1.35 1.28No. of Cl2 Tests Required 104 52 52 52 52 52 52 156 52No. of Cl2 Tests Performed 104 514 514 52 52 543 52 156 52From water entering distribution systemFree Chlorine (Cl2) Residuals:

Minimum mg/L 0.10 0.38 0.077 0.50 0.41 0.36 0.47 Minimum mg/L 1.20 1.51

Minimum mg/L 1.28 1.32


Maximum mg/L 2.66 2.52 1.93 2.00 2.00 3.75 2.00 1.88 1.72 Average mg/L 1.95 1.01 0.87 0.94 1.16 2.18 1.03 1.49 0.90Total Chlorine (Cl2) Residuals:

Minimum mg/L no standard 1.72 1.49 Maximum mg/L 2.98 2.11 Average mg/L 2.16 1.75No. of Cl2 Tests Required 365 365 365 Continuous 730 Continuous 365 365 365No. of Cl2 Tests Performed Continuous Continuous Continuous Continuous Continuous Continuous Continuous9 Continuous Continuous

3. TURBIDITY:

From samples submitted for bacteriological analysis

Minimum NTU 0.05 0.06 0.11 0.07 0.05 0.12 0.06 0.03 0.05 Maximum NTU no standard 0.18 0.13 0.85 0.19 0.19 0.36 0.24 0.29 0.30 Average NTU 0.10 0.09 0.34 0.13 0.12 0.19 0.13 0.09 0.14No. of Turbidity Tests Required 104 52 52 52 52 52 52 156 52No. of Turbidity Tests Performed 104 514 514 52 52 543 52 156 52 From water leaving the filter

Minimum NTU 0.019 0.000 0.069 0.004 0.06 0.030 Maximum NTU 0.3 0.020 Maximum NTU 1.0 0.256 0.573 0.999 0.29 0.277 Average NTU 0.045 0.095 0.138 0.009 0.18 0.051 95th Percentile NTU 0.1 0.014 95th Percentile NTU 0.2 0.067 95th Percentile NTU 0.3 0.080 0.140 0.205 0.29

No. of Turbidity Tests Required Continuous 730 Continuous Continuous Continuous Continuous

No. of Turbidity Tests Performed Continuous Continuous Continuous Continuous Continuous Continuous

From water entering the distribution system

Minimum NTU 0.02 0.011 0.05 0.02 0.03 0.00 Maximum NTU no standard 1.00 2.000 0.20 0.94 0.84 2.00 Average NTU 0.04 0.194 0.12 0.21 0.12 0.05 95th Percentile NTU 1.0 0.05 0.31 0.22 0.07No. of Turbidity Tests Required 365 365 730 Continuous 365 730No. of Turbidity Tests Performed Continuous Continuous 730 Continuous Continuous9 Continuous

Summary of 2017 water quality data SASKWATER OWNED WATER TREATMENT SYSTEMS

12

Parameters Units


& ObjectivesCodette

RWSSCupar WTP

Edenwold WTP

Elbow WTP

Gravelbourg WTP

Melville WTP

Pierceland WTP

Wakaw-Humboldt

RWSSWhite City

WTP


4. CHEMICAL HEALTH:Aluminum mg/L no standard 0.019 <0.007 0.0120 0.32 0.0096 0.035 <0.007Antimony mg/L 0.006 <0.0002 <0.00016 0.0004 <0.0002 <0.0002 <0.0002 <0.00016Arsenic mg/L 0.010 0.0002 0.00010 0.0032 0.0008 0.0011 0.0002 0.00050Barium mg/L 1.0 0.037 0.0011 0.0667 0.082 0.0191 0.076 0.0138Boron mg/L 5.0 0.03 0.3 <0.1 0.02 0.26 0.03 0.1Cadmium mg/L 0.005 <0.00001 <0.00015 <0.00015 0.00001 <0.00001 0.00001 <0.00015Chromium mg/L 0.05 <0.0005 <0.00019 <0.00019 <0.0005 <0.0005 <0.0005 0.00020Copper mg/L 1.0 0.0044 0.0164 0.0267 0.0012 0.0045 0.0024 0.0790Iron mg/L 0.3 0.0010 <0.1 <0.1 0.0006 0.0140 0.0006 <0.1Lead mg/L 0.01 <0.0001 0.00020 0.0007 <0.0001 <0.0001 <0.0001 0.00050Manganese mg/L 0.05 <0.0005 <0.01 <0.01 <0.0005 0.0103 <0.0005 <0.01Selenium mg/L 0.01 0.0003 <0.00113 <0.00113 0.0004 0.0002 0.0004 <0.00113Silver mg/L no standard <0.00005 <0.00020 <0.0002 <0.00005 <0.00005 <0.00005 <0.00020Uranium mg/L 0.02 <0.0001 <0.00011 0.0022 0.0011 0.0022 0.0006 0.0137Zinc mg/L 5 0.0010 <0.004 0.0044 0.0016 0.0017 0.0013 <0.00400

5. GENERAL CHEMICAL: Alkalinity mg/L 500 129 83.5 215 162 255 146 348Bicarbonate mg/L no standard 157 102 263 194 312 178 425Calcium mg/L no standard 53 11 132 45 59.2 46 123Carbonate mg/L no standard <1 0 0 3 <10 <1 0Chloride mg/L 250 14 13.0 89.1 16 31.7 15 10.5Fluoride (off-site testing) mg/L 1.5 0.66 <0.05 0.07 0.13 0.13 0.43 0.33Hardness (as CaCO3) mg/L 800 208 48 81010 187 320 196 542Hydroxide mg/L no standard <1 0 0 <1 <10 <1 0Magnesium mg/L 200 19 5 117 19 42 20 57Nitrate (as NO3) mg/L 45.0 1.32 <0.2 0.3 0.73 0.26 1.1 <0.2pH pH units 6.5–9.0 7.70 8.2 7.6 8.27 7.80 7.65 7.4Potassium mg/L no standard 3.7 <1 26 3.4 5.9 3.4 5Sodium mg/L 300 24 50 80 32 149 32 39Specific Conductivity uS/cm no standard 530 339 1723 515 1190 539 1057Sulphate mg/L 500 118 56.4 64610 83 342 112 255.3Sum of Ions mg/L no standard 389 394 408TDS mg/L 1500 331 239 1352 305 797 325 915

6. CHEMICAL PESTICIDES:Atrazine mg/L 0.005 <0.0002Bromoxynil (Buctril) mg/L 0.005 <0.001Carbofuran mg/L 0.09 <0.0002Chlorpyrifos (Lorsban) mg/L 0.09 <0.0002Dicamba (Banvel) mg/L 0.12 <0.0012, 4-Dichlorophenoxyacetic acid (2, 4-D) mg/L 0.1 <0.001

Diclofop-methyl (HoeGrass) mg/L 0.009 <0.001Dimethoate (Cygon) mg/L 0.02 <0.002Malathion mg/L 0.19 <0.00022-Methyl-4-Chlorophenoxyacetic Acid (MCPA) mg/L 0.10 <0.001

Pentachlorophenol (PCP) mg/L 0.06 <0.002Picloram (Tordon) mg/L 0.19 <0.001Trifluralin (Treflan) mg/L 0.045 <0.0002

7. TRIHALOMETHANES and HALOACETIC ACIDS (HAA5)

Trihalomethanes (THM) mg/L 0.100 0.031 0.052 0.079 0.019 0.069 0.047

Haloacetic Acids 5 mg/L 0.080 0.020 0.05 0.046 <0.005 0.042 0.037

Summary of 2017 water quality data (continued) SASKWATER OWNED WATER TREATMENT SYSTEMS

13

Not required to test (as per permit).Due to be sampled again in 2018. For 2016 results please see SaskWater's 2016 Water Quality Report. Does not meet Water Security Agency Permit to Operate requirements.

1. Regulatory Limits

Total Coliform: zero organisms detectable per 100 mL

E. coli: zero organisms detectable per 100 mL

Background Bacteria: less than 200 organisms per 100 mL. Any organisms detected over these limits will result in one positive for that sample.

2. Chlorine residuals in the distribution system must be either 0.1 mg/L free or 0.5 mg/L total. 3. Additional testing carried out by SaskWater but not required by the permit. 4. Bacteriological sample was not taken the week of February 20, 2017. EPO was notified.5. Samples were not tested due to postal error, January 9, 2017. EPO was notified.6. Sample was not tested due to a lab error on September 5, 2017. EPO was notified. 7. One low chlorine residual on September 19, 2017, lasting 15 minutes due to equipment malfunction.

Chlorine meets guideline 99.999% of the time and regulatory requirement for chlorine residual in the distribution system was met.

8. Chlorine meets guideline 99.8% of the time and regulatory requirement for chlorine residual in the distribution system was met.

9. Due to equipment failure, results from January 1-10, 2017, are once per day lab tests (as allowed by permit). Results from January 11, 2017, on are continuous monitoring data.

10. Aesthetic objective were exceeded, but all regulatory requirements are met.

mg/L: Miligrams per litre (equivalent to parts per million) uS/cm: Microsiemens per centimetre Bq/L: Becquerel per litre

NTU: Nephelometric Turbidity Unit <: Below detection limits RWSS: Regional Water Supply System WTP: Water Treatment Plant 95th Percentile: Turbidity levels from each filter must not exceed this limit in at least 95% of the discrete measurements made for each calendar month; or if continuous turbidity monitoring is employed, at least 95% of the time for each calendar month.

Notes

Parameters Units


& ObjectivesCodette

RWSSCupar WTP

Edenwold WTP

Elbow WTP

Gravelbourg WTP

Melville WTP

Pierceland WTP

Wakaw-Humboldt

RWSSWhite City

WTP


8. MICROCYSTIN-LR:Microcystin-LR mg/L 0.0015 <0.0001 <0.0001

9 CYANIDE and MERCURY:Cyanide mg/L 0.200 0.007 0.002Mercury mg/L 0.001 <0.000001 <0.000001

10. CHEMICAL ORGANICS:Benzene mg/L 0.005 <0.0002 <0.0002Benzo(a)pyrene mg/L 0.00001 <0.00001 <0.00001Carbon tetrachloride mg/L 0.005 <0.002Dichlorobenzene 1,2 mg/L 0.2 <0.0005Dichlorobenzene 1,4 mg/L 0.005 <0.0005Dichloroethane 1,2 mg/L 0.005 <0.0005Dichloroethylene 1,1 mg/L 0.014 <0.0005Dichloromethane mg/L 0.05 <0.0005Dichlorophenol 2,4 mg/L 0.9 <0.002Ethylbenzene mg/L 0.0024 <0.0002 <0.0002Monochlorobenzene mg/L 0.080 <0.0005Nitrilotriacetic Acid (NTA) mg/L 0.4Tetrachlorophenol 2,3,4,6 mg/L 0.1 <0.002Toluene mg/L 0.024 <0.0002 <0.0002Trichloroethylene (TCE) mg/L 0.05 <0.0005Trichlorophenol 2,4,6 mg/L 0.005 <0.002Vinyl Chloride mg/L 0.002 <0.0005Total Xylenes mg/L 0.3 <0.0002 <0.0002

11. RADIOLOGICAL:

Gross alpha Bq/L 0.5 <0.23

Gross beta Bq/L 1.0 0.28+/- 0.05

Summary of 2017 water quality data (continued) SASKWATER OWNED WATER TREATMENT SYSTEMS

14

CERTIFIED OPERATION AND MAINTENANCE WATER TREATMENT SYSTEMS

2017 Drinking Water Quality – Certified Operation and Maintenance Water Treatment SystemsOur governing standards direct us to meet or exceed the Saskatchewan Drinking Water Quality Standards for health-related potable water parameters.

Parameters UnitsSaskatchewan Standards

& ObjectivesInterlake

WTPJackfish Lake

WTPLa Ronge

WTPVanscoy

WTP



Total Coliform 0 0 0 0 0

E. Coli 0 0 0 0 0Background Bacteria 0 0 0 0No. of Regular Bacteriological Tests Required 24 156 104 52No. of Regular Bacteriological Tests Submitted 263 156 104 52



Minimum mg/L 0.12 0.82 0.52 0.39 0.65 Maximum mg/L 1.20 1.21 2.03 1.41 Average mg/L 1.01 0.78 0.74 1.08Total Chlorine (Cl2) Residuals:

Minimum mg/L 0.52 1.06 0.69 0.57 0.92 Maximum mg/L 1.66 1.42 2.20 1.68 Average mg/L 1.29 0.96 1.00 1.28No. of Free Cl2 Tests Required 24 156 104 52No. of Free Cl2 Tests Performed 263 156 104 533

From water entering distribution systemFree Chlorine (Cl2) Residuals:


Minimum mg/L 0.20 0.64 0.62 Minimum mg/L 0.22 0.34 Maximum mg/L 1.26 2.05 1.31 2.00 Average mg/L 0.99 1.04 0.75 1.08No. of Free Cl2 Tests Required 365 Continuous Continuous Continuous

No. of Free Cl2 Tests Performed Continuous Continuous Continuous Continuous

3. TURBIDITY:


Minimum NTU 0.06 0.10 0.05 0.09 Maximum NTU no standard 0.13 0.86 0.59 0.31 Average NTU 0.10 0.20 0.09 0.15No. of Turbidity Tests Required 24 0 104 52No. of Turbidity Tests Performed 263 1563 104 533

From water leaving the filter

Minimum NTU 0.024 0.05 0.01 Maximum NTU 0.3 0.11 Maximum NTU 1.0 0.200 0.92 Average NTU 0.076 0.07 0.0999th Percentile NTU 0.1 0.0995th Percentile NTU 0.3 0.140 0.16

From water entering the distribution system

Minimum NTU 0.06 0.025 Maximum NTU no standard 0.19 0.340 Average NTU 0.10 0.07195th Percentile NTU no standard 0.15195th Percentile NTU 1.0 0.14No. of Turbidity Tests Required 365 724 Continuous Continuous

No. of Turbidity Tests Performed 3663 1448 Continuous Continuous

Summary of 2017 water quality data

15

Summary of 2017 water quality data (continued) CERTIFIED OPERATION AND MAINTENANCE WATER TREATMENT SYSTEMS



WTPJackfish Lake

WTPLa Ronge

WTPVanscoy

WTP


4. CHEMICAL HEALTH:

Aluminum mg/L no standard 0.013 0.0035 0.22Antimony mg/L 0.006 <0.0002 <0.0002 <0.0002Arsenic mg/L 0.010 <0.0001 0.0004 0.0005Barium mg/L 1.0 0.0027 0.033 0.082Boron mg/L 5.0 0.22 <0.01 0.02Cadmium mg/L 0.005 <0.00001 <0.00001 0.00001Chromium mg/L 0.05 <0.0005 <0.0005 <0.0005Copper mg/L 1.0 0.012 0.067 0.0020Iron mg/L 0.3 0.0026 0.0114 <0.0005Lead mg/L 0.01 0.0001 0.0002 <0.0001Manganese mg/L 0.05 0.0005 0.0014 <0.0005Selenium mg/L 0.01 <0.0001 <0.0001 0.0004Silver mg/L no standard <0.00005 <0.00005 <0.00005Trihalomethanes (THM) mg/L 0.100 0.051 0.068 0.051Uranium mg/L 0.02 <0.0001 <0.0001 0.0009Zinc mg/L 5 0.0058 0.0084 0.0016HAA5 mg/L 0.080 <0.005 0.045 0.039 0.032

5. GENERAL CHEMICAL:Alkalinity mg/L 500 57 120 163Bicarbonate mg/L no standard 70 147 199Calcium mg/L no standard 1.9 31 45Carbonate mg/L no standard <1 <1 <1Chloride mg/L 250 2.8 12.1 17Fluoride (off-site testing) mg/L 1.5 <0.01 0.41 0.14Hardness (as CaCO3) mg/L 800 7 120 190Hydroxide mg/L no standard <1 <1 <1Magnesium mg/L 200 0.5 10.5 19Nitrate (as NO3) mg/L 45.0 0.07 0.17 0.67pH pH units 6.5 - 9.0 7.57 7.83 8.13Potassium mg/L no standard <0.1 2.0 3.3Sodium mg/L 300 27 4.3 33Specific Conductivity uS/cm no standard 120 261 522Sulphate mg/L 500 3.7 0.7 88Sum of Ions mg/L no standard 106 207 404TDS mg/L 1500 87 157 309

6. CHEMICAL PESTICIDES:Atrazine mg/L 0.005Bromoxynil (Buctril) mg/L 0.005

Carbofuran mg/L 0.09

Chlorpyrifos (Lorsban) mg/L 0.09Dicamba (Banvel) mg/L 0.122, 4-Dichlorophenoxyacetic Acid (2, 4-D) mg/L 0.1Diclofop-methyl (HoeGrass) mg/L 0.009Dimethoate (Cygon) mg/L 0.02Malathion mg/L 0.192-Methyl-4-Chlorophenoxyacetic Acid (MCPA) mg/L 0.10Pentachlorophenol (PCP) mg/L 0.06Picloram (Tordon) mg/L 0.19Trifluralin (Treflan) mg/L 0.045

16

Summary of 2017 water quality data (continued) CERTIFIED OPERATION AND MAINTENANCE WATER TREATMENT SYSTEMS



WTPJackfish Lake

WTPLa Ronge

WTPVanscoy

WTP


7.CHEMICAL ORGANICS

Benzene mg/L 0.005Benzo(a)pyrene mg/L 0.00001Carbon tetrachloride mg/L 0.005Dichlorobenzene 1,2 mg/L 0.2Dichlorobenzene 1,4 mg/L 0.005Dichloroethane 1,2 mg/L 0.005Dichloroethylene 1,1 mg/L 0.014Dichloromethane mg/L 0.05Dichlorophenol 2,4 mg/L 0.9Ethylbenzene mg/L 0.0024Monochlorobenzene mg/L 0.080Tetrachlorophenol 2,3,4,6 mg/L 0.1Toluene mg/L 0.024Trichloroethylene (TCE) mg/L 0.05Trichlorophenol 2,4,6 mg/L 0.005Vinyl Chloride mg/L 0.002Total Xylenes mg/L 0.3

8. PRESSURE DECAY TESTING:

Log Removal Value ≥3 4.47

9. MICROCYSTIN-LR:

Microcystin mg/L 0.0015 <0.0001

10. CYANIDE and MERCURY:

Cyanide mg/L 0.200 <0.001Mercury mg/L 0.001 <0.000001

Not required to test (as per permit).

Due to be sampled again in 2018.

Does not meet Water Security Agency Permit to Operate requirements.



E. Coli: zero organisms detectable per 100 mL

Background Bacteria: less than 200 organisms per 100 mL. Any organisms detected over these limits will result in one positive for that sample.

2. Chlorine residuals in the distribution system must be either 0.1 mg/L free or 0.5 mg/L total.

3. Additional testing carried out by SaskWater but not required by the permit.

Notes

mg/L: Miligrams per litre (equivalent to parts per million) uS/cm: Microsiemens per centimetre Bq/L: Becquerel per litre

NTU: Nephelometric Turbidity Unit <: Below detection limits RWSS: Regional Water Supply System WTP: Water Treatment Plant 95th Percentile: Turbidity levels from each filter must not exceed this limit in at least 95% of the discrete measurements made for each calendar month; or if continuous turbidity monitoring is employed, at least 95% of the time for each calendar month.

17

SaskWater Owned Water Transmission System

Annual Volume in

2017 (m3)

Water Source

Bacteriological & Chlorine

Residuals in Distribution

System

Chlorine Residuals

Entering the Distribution

System

Turbidity

General Chemical &

Health & Toxicity



BuffaloPound East

78,543 City of Regina

1 per week ContinuousNot required

as per permit

Not required as per permit

1 every 3 months in Jan, Apr, July and Oct

(THM only)

BuffaloPound North

152,359 Buffalo Pound WTP

2 per month ContinuousNot required

as per permit



(THM only)

BuffaloPound West

57,444 Buffalo Pound WTP

2 per month ContinuousNot required

as per permit



(THM only)

SaskatoonEast

934,359 City of Saskatoon

3 per week Continuous 3 per weekNot required as per permit


SaskatoonNorth

2,387,655 City of Saskatoon



SaskatoonNortheast




SaskatoonNorthwest(Thatcher Ave. & 33rd Street)




SaskatoonWest




In addition to water treatment facilities, SaskWater also owns and provides certified operation and maintenance for potable water transmission systems. There are no treatment facilities on any of these transmission systems.


Depending on the population, each potable water transmission system must be monitored according to the Water Security Agency’s (WSA) Municipal Drinking Quality Monitoring Guidelines. Permit requirements for a specific waterworks may require more sampling than outlined in WSA’s guidelines.

The following tables summarize some of the key water quality monitoring and testing requirements for bacteriological, chlorine residuals, turbidity, chemical and health and toxicity parameters for each of our owned and COM facilities as required by the Permits to Operate issued by the Water Security Agency.

Transmission

OWNED WATER TRANSMISSION SYSTEMS

18

SaskWater Operated Water Transmission System

Water Source

Bacteriological & Chlorine

Residuals in Distribution

System

Chlorine Residuals

Entering the Distribution

System

Turbidity

General Chemical &

Health & Toxicity



Caron/MortlachRegional Public Utility

SaskWater(via City of Moose Jaw)

1 per week ContinuousNot required as per permit



(THM only)

North CentralRural PipelineAssociation

SaskWater 4 per month 2 per dayNot required as per permit



Village of Elbow SaskWater 1 per week 1 per week 1 per weekNot required as per permit

THM - 1 every 3 months in Jan, Apr, July and Oct

HAA5- 1 every 6 months in Jan and July

Town of Star City

SaskWater 1 per week 1 per dayNot required as per permit



Town of White City

SaskWater 2 per month 1 per day 2 per monthNot required as per permit


Village of Air Ronge

Lac La Ronge Regional

Water Corporation

2 per week 2 per day 2 per weekNot required as per permit


Village of Edenwold

SaskWater 1 per month 1 per month 1 per monthNot required as per permit


(THM only)

COM WATER TRANSMISSION SYSTEMS

19

SASKWATER OWNED WATER TRANSMISSION SYSTEMS

2017 Drinking Water Quality – SaskWater Owned Water Transmission Systems


& Objectives Buff

alo

Poun

d Ea

st

Buff

alo

Poun

d N

orth

Buff

alo

Poun

d W

est

Sask

atoo

n Ea

st

Sask

atoo

n N

orth

Sask

atoo

n N

orth

east

Sask

atoo

n N

orth

wes

t Th

atch

er A

ve. &

33r

d St

.

Sask

atoo

n W

est



Total Coliform 0 0 0 0 0 0 0 0 0

E. coli 0 0 0 0 0 0 0 0 0Background Bacteria 0 0 0 0 0 0 0 0Number of Bacteriological Tests Required 52 24 24 156 156 52 52 104Number of Bacteriological Tests Submitted 52 523 523 156 1573 52 52 104



Minimum mg/L 0.12 0.13 0.35 0.40 Maximum mg/L 1.88 1.49 1.39 Average mg/L 0.89 0.89 0.69Total Chlorine (Cl2) Residuals:

Minimum mg/L 0.52 0.51 0.78 0.70 0.74 1.05 1.19 1.40 0.65 Maximum mg/L 2.58 2.04 1.77 1.69 1.86 1.87 1.87 1.85 Average mg/L 1.30 1.30 1.09 1.28 1.60 1.59 1.70 1.48No. of Free Cl2 Tests Required 22 24 24 156 156 52 52 104No. of Free Cl2 Tests Performed 523 523 523 156 1573 52 52 104From water entering distribution systemFree Chlorine (Cl2) Residuals:

Minimum mg/L 0.1 0.15 0.13 0.004

Maximum mg/L 2.00 1.70 1.43 Average mg/L 1.13 0.65 0.64Total Chlorine (Cl2) Residuals:

Minimum mg/L 0.5 1.17 1.30 1.20 0.94 1.13 Maximum mg/L 3.01 2.52 2.49 5.00 5.00 Average mg/L 1.71 1.70 1.67 1.65 1.68No. of Free Cll2 Tests Required Continuous Continuous Continuous Continuous Continuous Continuous Continuous Continuous

No. of Free Cll2 Tests Performed Continuous Continuous Continuous Continuous Continuous Continuous Continuous Continuous

3. TURBIDITY:


Minimum NTU 0.09 0.05 0.10 0.09 0.09 0.09 0.08 0.10 Maximum NTU no standard 0.39 0.36 0.26 0.36 0.39 0.30 0.30 1.72 Average NTU 0.19 0.14 0.17 0.22 0.19 0.19 0.18 0.26No. of Turbidity Tests Required 0 0 0 156 156 52 52 104No. of Turbidity Tests Performed 523 523 523 156 1573 52 52 104


20

Summary of 2017 water quality data (continued) SASKWATER OWNED WATER TRANSMISSION SYSTEMS


& Objectives Buff

alo

Poun

d Ea

st

Buff

alo

Poun

d N

orth

Buff

alo

Poun

d W

est

Sask

atoo

n Ea

st

Sask

atoo

n N

orth

Sask

atoo

n N

orth

east

Sask

atoo

n N

orth

wes

t Th

atch

er A

ve. &

33r

d St

.

Sask

atoo

n W

est


4. CHEMICAL HEALTH:

Trihalomethanes (THM) mg/L 0.100 0.060 0.067 0.075 0.036 0.039 0.040 0.041 0.041Haloacetic Acids (HAAS) mg/L 0.080 0.034 0.038 0.027 0.033 0.034 0.037 0.033

Sampling for parameters below this point is not required under permit.

Aluminum mg/L no standard 0.021 0.014 0.0076 0.019 0.014Antimony mg/L 0.006 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002Arsenic mg/L 0.010 0.0003 0.0002 0.0003 0.0003 0.0002Barium mg/L 1.0 0.067 0.050 0.056 0.066 0.054Boron mg/L 5.0 0.03 0.02 0.02 0.03 0.02Cadmium mg/L 0.005 0.00001 0.00001 0.00002 0.00001 0.00001Chromium mg/L 0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005Copper mg/L 1.0 0.0053 0.0014 0.0042 0.0029 0.18Iron mg/L 0.3 0.013 0.0054 0.0037 0.013 0.0080Lead mg/L 0.01 0.0013 0.0002 0.0002 <0.0001 0.0007Manganese mg/L 0.05 0.0006 0.0012 <0.0005 <0.0005 0.0005Selenium mg/L 0.01 0.0004 0.0004 0.0003 0.0004 0.0004Silver mg/L no standard <0.00005 <0.00005 <0.00005 <0.00005 <0.00005Uranium mg/L 0.02 0.0012 0.0014 0.0012 0.0012 0.0012Zinc mg/L 5 0.0059 0.0032 0.0074 0.0020 0.021

5. GENERAL CHEMICAL:Alkalinity mg/L 500 127 144 141 132 139Bicarbonate mg/L no standard 155 176 172 161 170Calcium mg/L no standard 41 44 40 43 44Carbonate mg/L no standard <1 <1 <1 <1 <1Chloride mg/L 250 13 15 14 14 14Fluoride mg/L 1.5 0.57 0.70 0.70 0.56 0.58Hardness (as CaCO3) mg/L 800 180 184 174 189 192Hydroxide mg/L no standard <1 <1 <1 <1 <1Magnesium mg/L 200 19 18 18 20 20Nitrate (as NO3) mg/L 45.0 0.61 0.94 0.57 0.40 0.44pH pH units 6.5–9.0 8.04 7.87 8.04 8.06 8.05Potassium mg/L no standard 3.3 3.6 2.8 3.3 3.4Sodium mg/L 300 31 28 30 33 33Specific Conductivity µS/cm no standard 493 504 488 516 519Sulphate mg/L 500 100 92 93 110 110Sum of Ions mg/L no standard 363 378 370 385 395TDS mg/L 1500 306 300 294 317 322

Free chlorine residuals don’t apply due to Saskatoon using chloramination.






Background Bacteria: less than 200 organisms per 100 mL

Any organisms detected over these limits will result in one positive for that sample.


3. Additional testing carried out by SaskWater but not required by the permit.

4. Low chlorine level from January 27-29, 2017, due to equipment failure. Chlorine meets guidelines 99.4% of the time. EPO was notified.

Notes

mg/L: Miligrams per litre (equivalent to parts per million) uS/cm: Microsiemens per centimetre NTU: Nephelometric Turbidity Unit

<: Below detection limits

21

2017 Drinking Water Quality – Certified Operation and Maintenance Water Transmission Systems

CERTIFIED OPERATION AND MAINTENANCE WATER TRANSMISSION SYSTEMS

Parameters Units


& Objectives Caro

n/M

ortl

ach

Regi

onal

Pub

lic U

tilit

y

Nor

th C

entr

al R

ural

Pi

pelin

e As

soci

atio

n(N

orth

)

Nor

th C

entr

al R

ural

Pi

pelin

e As

soci

atio

n(S

outh

)

Villa

ge o

f El

bow

Tow

n of

St

ar C

ity

Tow

n of

Whi

te C

ity

Villa

ge o

f A

ir R

onge

Villa

ge o

f Ed

enw

old



Total Coliform 0 0 0 0 0 0 0 0 0

E. coli 0 0 0 0 0 0 0 0 0Background Bacteria 0 0 0 0 0 0 0 0Number of Bacteriological Tests Required 52 24 24 52 52 24 104 12Number of Bacteriological Tests Submitted 52 263 263 52 514 523 104 513



Minimum mg/L 0.12 0.43 0.81 0.43 0.59 0.70 0.21 0.16 0.16 Maximum mg/L 1.49 1.26 1.41 1.20 1.56 1.04 0.71 1.22 Average mg/L 0.93 1.04 1.02 0.91 1.26 0.89 0.35 0.74Total Chlorine (Cl2) Residuals:

Minimum mg/L 0.52 0.77 1.09 0.61 0.79 0.95 0.91 0.43 0.86 Maximum mg/L 1.94 1.54 1.66 1.41 1.86 1.51 0.88 2.52 Average mg/L 1.27 1.29 1.26 1.14 1.47 1.23 0.59 1.55No. of Cl2 Tests Required 52 24 24 52 52 24 104 12No. of Cl2 Tests Performed 52 263 263 52 52 523 104 513

From water entering distribution systemFree Chlorine (Cl2) Residuals:

Minimum mg/L 0.1 0.035 0.11 0.65 0.92 0.47 0.11 Maximum mg/L 10.00 2.00 1.40 1.79 1.72 0.90 Average mg/L 1.34 0.89 1.00 1.47 0.90 0.35No. of Free Cl2 Tests Required Continuous 365 365 365 365 730No. of Free Cl2 Tests Performed Continuous Continuous6 Continuous Continuous Continuous 730

3. TURBIDITY:


Minimum NTU 0.23 0.06 0.06 0.07 0.07 0.08 0.05 0.14 Maximum NTU no standard 1.40 0.24 0.31 0.38 0.38 0.55 0.72 0.82 Average NTU 0.57 0.12 0.14 0.20 0.11 0.18 0.09 0.36No. of Turbidity Tests Required 0 0 0 52 0 24 104 12No. of Turbidity Tests Performed 523 263 263 52 523 523 104 513

From water entering the distribution systemGroundwater:

Minimum NTU 0.00 Maximum NTU no standard 2.00 Average NTU 0.05 95th Percentile NTU 1.0 0.07No. of Turbidity Tests Required 365No. of Turbidity Tests Performed Continuous

4. TRIHALOMETHANES and HALOACETIC ACIDS (HAA5)Trihalomethanes (THM) mg/L 0.100 0.1167 0.040 0.040 0.084 0.082 0.060Haloacetic Acids 5 mg/L 0.080 0.033 0.031 0.046 0.050


22

Summary of 2017 water quality data (continued) CERTIFIED OPERATION AND MAINTENANCE WATER TRANSMISSION SYSTEMS






Background Bacteria: less than 200 organisms per 100 mL

Any organisms detected over these limits will result in one positive for that sample.


3. Additional testing carried out by SaskWater but not required by the permit..

4. The sample was not tested the week of August 14, 2017, because of a lab processing error. EPO was notified.

5. Low water use resulted in low chlorine analyser readings. Chlorine meets guidelines 99.9% of the time and regulatory requirement for chlorine residual in the distribution system was met.

6. No chlorine residual data available September 5-14, 2017, due to equipment malfunction. The chlorine residual at the booster station 4 km upstream of this sampling location had a chlorine residual not less than 0.94 mg/L from September 1-15, 2017.

7. High THMs due to a high level of THMs in water supplied by the City of Moose Jaw and requirement to rechlorinate to meet permit to operate chlorine level limits.

Notes

mg/L: Miligrams per litre (equivalent to parts per million) uS/cm: Microsiemens per centimetre NTU: Nephelometric Turbidity Unit

<: Below detection limits

23

Further water quality information on potable water that SaskWater purchases is available from our suppliers:

Buffalo Pound Water Treatment Plant

http://www.buffalopoundwtp.ca/plant/annual-report

City of Moose Jaw

http://www.moosejaw.ca/engineering/water-quality

City of Regina

https://www.regina.ca/residents/water-sewer/water

City of Saskatoon

https://www.saskatoon.ca/services-residents/power-water/water-wastewater/drinking-water and select from the available reports under Related Documents at the end of the post.

Key Drinking Water Parameters and EffectsAs the regulator for water quality, the Water Security Agency determines standards, which are legally enforceable requirements for drinking water quality, as per The Waterworks and Sewage Works Regulations. In general, standards are mandatory health parameters for systems that supply water for human consumptive use. The WSA also determines water quality aesthetic objectives, which apply to certain characteristics of or substances found in water for human consumptive or hygienic use.

SaskWater’s governing standards for potable water quality direct us to meet or exceed the water quality parameters set by the province of Saskatchewan.

Additional information on water quality, standards and aesthetic objectives can be found here:

Health Canada – Canadian Drinking Water Quality Guidelines

https://www.canada.ca/en/health-canada/services/environmental-workplace-health/water-quality/drinking-water/canadian-drinking-water-guidelines.html

SaskH2O – My Drinking Water

http://www.saskh2o.ca/MyDrinkingWater.asp

Explanation of TermsPotable Water

Treated water that is suitable for human consumption in accordance with applicable regulations.

Non-potable Water

Water that is not suitable for human consumption in accordance with applicable regulations.

Precautionary Drinking Water Advisory (PDWA)

An advisory issued under the authority of Subsection 36(1) of The Environmental Management and Protection Act, 2010 by Water Security Agency Field Offices (WSAFO) when the WSAFO determines that there is a possibility that drinking water quality concerns exist but immediate public health threats have not been identified. As an example, it is standard protocol to issue a PDWA when a water main is depressurized to undertake repairs.

Emergency Boil Water OrdersThere were no emergency boil water orders (EBWO) issued on any SaskWater owned or operated facilities in 2017.

Precautionary Drinking Water AdvisoriesA Precautionary Drinking Water Advisory (PDWA) is issued when drinking water quality concerns exist but immediate public health threats have not been identified. They are commonly issued as a result of power outages or maintenance that may result in depressurization of the distribution system.

There were eleven (11) PDWAs issued on SaskWater owned potable water systems in 2017:

• Saskatoon Potable Water Supply System – East had PDWAs issued on January 4th, and November 7th, due to water main repairs and system depressurizations.

• Saskatoon Potable Water Supply System – West had three PDWAs: one issued on February 6th, due to a water main break and subsequent system depressurization, one issued on February 27th, due to a water valve replacement by the City of Saskatoon causing a system depressurization, and one issued on October 19th, due to a planned system maintenance causing a partial system depressurization.

• Saskatoon Potable Water Supply System – North East had PDWAs issued on May 24th, and October 6th, due to water main breaks and repairs causing system depressurizations

• Buffalo Pound Water Supply Systems – West and North each had PDWAs issued on January 12th, due to a system wide depressurization of the distribution system due to planned system maintenance at the Buffalo Pound Water Treatment Plant (BPWTP), and on January 24th, due to system depressurization due to planned maintenance at the BPWTP.

Information

24

Where SaskWater provides certified operation and maintenance services to community or rural pipeline association-owned systems, there were nine (9) PDWAs issued in 2017:

• The Northern Village of Air Ronge had a PDWA issued on January 13th, due to a power outage causing a depressurization, and one issued on August 8th, due to inadequate chlorine residual in the distribution system.

• The Lac La Ronge Regional Water Corporation had a PDWA issued on January 13th, due to a power outage causing a depressurization, and one issued on August 8th, due to inadequate chlorine residual in the distribution system.

• The Town of White City had one PDWA issued on May 23rd, due to a system depressurization.

• The Village of Edenwold had a PDWA issued on June 8th, due to an upset condition during plant maintenance, and one issued on October 12th, due to depressurization caused by maintenance work.

• The Village of Elbow had a PDWA issued on August 17th, due to an unplanned depressurization caused by a water main break.

• The Jackfish Lake West Water Utility had a PDWA issued on November 20th, due to a water line break and depressurization of the distribution system.

There is an ongoing PDWA, issued by the Water Security Agency in 2008, on SaskWater’s Saskatoon Non-Potable Water Supply System – West. This is a situation where the Water Security Agency has decided that this system falls under The Environmental Management and Protection Act, 2010 and The Waterworks and Sewage Works Regulations. This is a non-potable water supply system developed to supply industrial customers; however, household users are also supplied and the water is unsuitable for drinking unless treated. An alternative potable water source for the system’s residential users has yet to be developed and water users have until December 31, 2018, to find alternate sources.

26

saskwater.com200–111 Fairford Street East

Moose Jaw, SK S6H 1C8Toll-free: 1-888-230-1111Inquiry: 306-694-3098