cap water sources...1 numeric water quality standard (21 µg/l) determined by the arizona department...

Central Arizona Water Conservation DistrictWater Transmission

by Scott Bryan, Senior Biologist

2019

ANNUAL REPORT

WATERQUALITY

Central Arizona Project (CAP) reliably delivers Colorado River water from Lake Havasu, located on Arizona’s western border, to central and southern Arizona. The total CAP system is 336 miles long and consists of open canals, inverted siphon pipelines, tunnels, pumping plants, check structures, turnouts, and the Lake Pleasant storage reservoir.

The CAP system provides a means for 1.5 million acre feet (MAF) of Arizona’s Colorado River allotment (totaling 2.8 MAF) to be delivered to the most populous areas of the state and reduce the use of groundwater for agriculture and other activities.

YOUR WATER

2 | 2019 Water Quality Annual Report

Central Arizona Water Conservation District (CAWCD), with more than 80 long-term customers, is Arizona’s largest supplier of renewable water. Customers are categorized in three distinct user groups: municipal and industrial (M&I), agricultural, and tribal. They use CAP’s Colorado River water to run businesses, water crops, and maintain households, all of which are critical to the quality of life in Arizona.

CAWCD does not provide potable water directly to the public, but supplies raw Colorado River water to its various customers. Lake Pleasant is CAP’s 10,000-surface-acre storage reservoir, and it is strategically utilized based on demand, while taking advantage of the lowest power rates possible. In general, Colorado River water is pumped into Lake Pleasant from CAP October to May, and water is drawn from the reservoir during summer months. Therefore, depending on the time of year, CAP customers may receive water that solely originates from the Colorado River, or a blend of water from the river and Lake Pleasant.

During the time that water is stored in Lake Pleasant, it may take on different water quality characteristics than originally found in the Colorado River. Each of these sources presents its own challenges as they are exposed to unique watershed-related events and activities, such as stormwater runoff, wastewater discharge, recreation, wildlife, algal blooms, and other factors that may affect water quality.

While agricultural and industrial customers may directly utilize raw CAP water, municipal customers filter, disinfect, and apply other necessary treatments to the water before it is delivered through the municipal distribution system for domestic use.

CAP WATER SOURCES

Central Arizona Project | 3

From 1985 to 1995, the United States Bureau of Reclamation (USBR) and CAWCD cooperated with the United States Geological Survey (USGS) to implement a water quality sampling program in the CAP. USGS collected monthly and quarterly grab samples at three sites in the canal system and tested more than 50 parameters. Historical CAP water quality data is available online at:

https://nwis.waterdata.usgs.gov/nwis/qwdata

In 1996, CAWCD took over the water quality sampling program and expanded the scope to include additional sites and parameters. Since that time, CAWCD has produced Annual Water Quality reports, which detail the water quality measured in the canal throughout the calendar year. Past reports are available online at:

https://www.cap-az.com/departments/water-operations/water-quality

CAP HISTORICAL WATER QUALITY


GRAB SAMPLES

Grab samples are collected monthly at six locations, including Lake Havasu, Little Harquahala Pumping Plant, Lake Pleasant Parkway, McKellips Road, Brady Pumping Plant, and San Xavier Pumping Plant (see page 8 map). Each monthly sample includes testing for 23 primary water quality constituents (Appendix A). In addition, quarterly samples are collected from four sites, including Lake Havasu, Lake Pleasant, Lake Pleasant Parkway, and San Xavier Pumping Plant (see page 8 map). Quarterly samples include the 23 primary constituents, as well 120 additional contaminants. A Hydrolab DS5X is also deployed during each sampling event to record temperature, dissolved oxygen, conductivity, and pH.

CAWCD contracts with a State of Arizona licensed and certified laboratory to perform the water quality analysis on grab samples. Verified results are then posted on CAP’s website and available for download at:

http://www.cap-az.com/departments/water-operations/water-quality

As a service to CAP customers, a robust monitoring program is in place to provide water users with valuable information regarding source and canal water quality. The monitoring program consists of both real-time measurements and monthly/quarterly grab samples. CAWCD also coordinates with CAP customers to provide additional sampling if needed.

REAL-TIME MEASUREMENTS

CAWCD monitors basic water quality in real-time at two locations along the canal; CAP Headquarters (7th Street) and just upstream of the Roosevelt Water Conservation District turnout in Mesa, AZ (McDowell Road). Both stations utilize a Hydrolab DS5X multiparameter meter to measure temperature, conductivity, pH, dissolved oxygen, and turbidity. Meters are calibrated and maintained monthly to provide reasonably accurate data. Real-time data is automatically uploaded from each water quality meter every 15 minutes and is displayed on CAP’s website at:

http://www.cap-az.com/departments/water-operations/water-quality

CAP WATER QUALITY PROGRAM


EXPANDED WATER QUALITY PROGRAMIn 2020, CAWCD is placing more emphasis on its water quality program to provide customers with additional data, respond to customer requests, improve communications, and incorporate elements of the System Use Agreement (which allows for wheeling of non-project water).

The expansion of the program will include water quality monitoring at additional representative sample sites, as well as increasing the number of constituents to be tested. Monthly samples will now include 54 primary constituents, while quarterly samples will include an additional 171 EPA regulated and unregulated contaminants. Contaminant testing includes constituents historically sampled by CAWCD, as well as PFAs, disinfection by-products, pathogens, and more.

Samples collected from traditional sites in November and December 2019 were tested for the additional constituents and results are included in Appendix A.

CAWCD will also be working to update the CAP water quality website to improve access to data and provide valuable water quality notifications to customers. The 2020 annual report will include results from the additional testing as well as other important information for our customers.


LakePleasant

Gila River

Gila River

Salt River

Lake Pleasant

Lake PleasantParkway

Lake Havasu

Little HarquahalaPumping Plant

McKellips

BradyPumping Plant

San XavierPumping Plant

±0 2010

Miles

!(!(

!(

!(

!(

!(

!(

NEW

MEXIC

O

NEV

ADA

CAL

IFO

RN

IA

MEXICOGulf ofCalifornia

Tucson

Flagstaff

PHOENIX

Yuma

Kingman

Prescott

Parker

PimaPima

YumaYuma

MaricopaMaricopa

ApacheApache

NavajoNavajo

GilaGila

CoconinoCoconinoMohaveMohave

YavapaiYavapai

La PazLa Paz

PinalPinal

CochiseCochise

SantaSantaCruzCruz

GrahamGraham

Gre

enle

eG

reen

lee

Central Arizona Project

UTAH

Colorado Riv e rLakeMead

LakePowell

LakeHavasu

LegendCAP Canal

Water Quality Sample Sites


All water, whether it be treated or untreated, can be expected to contain at least small amounts of some contaminants. Many of these contaminants are naturally occurring and are either harmless or beneficial at low concentrations. Others may be regulated by EPA to ensure protection for public health.

CAWCD tests for a wide range of constituents to inform water providers of the quality of water that they are receiving. In 2019, none of the primary constituents tested by CAWCD exceeded a typical range for CAP water (see summary table below and Appendix A). Just five contaminants were found to be above a level of “Non Detect” (see Detected Contaminants Table below) throughout the year. However, levels of these contaminants in CAP water were found to be signifantly lower than the Federal Maximum Contaminant Level (MCL) and/or standards established by the State of Arizona.

2019 TEST RESULTS


Constituent Units 2019 Range 2019 Average CAP 5-Yr Average Federal MCL

Field Measurements

Temperature oF 48.4 - 84.9 66.7 --

Dissolved Oxygen mg/L 9.83 - 10.03 9.50 --

Specific Conductance µS/cm 835 - 947 911 --

pH 7.39 - 8.72 8.09 6.5 - 8.5

Primary Constituents

Alkalinity mg/L 93 - 130 121.43 122.29 --

Ammonia Nitrogen mg/L 0.051 - 0.26 0.10 0.04 --

Barium µg/L 100 - 210 118.47 123.17 2000

Bromide µg/L 68 - 99 76.65 81.67 --

Calcium mg/L 55 - 120 70.25 72.58 --

Chloride mg/L 82 - 96 87.47 91.46 250

Copper (Total) µg/L 2.8 - 8.4 5.6 6.69 --

Dissolved Organic Carbon mg/L 2.8 - 3.8 3.19 3.18 --

Iron (Dissolved) mg/L Non-Detect Non-Detect Non-Detect 0.03

Iron (Total) mg/L 0.02 - 3.2 0.18 0.09 --

Magnesium mg/L 24 - 28 25.51 26.67 --

Manganese µg/L 1.9 - 170 8.53 5.65 50

Nitrate as Nitrogen mg/L 0.20 - 0.34 0.27 0.12 10

Orthophosphate as P mg/L 0.01 - 0.86 0.34 0.01 --

Potassium mg/L 4.4 - 5.5 4.82 4.92 --

Silica mg/L 3.4 - 23 7.44 8.14 --

Sodium mg/L 80 - 95 86.81 92.61 --

Specific Conductance µS/cm 870 - 1000 945.14 1028.71 --

Strontium mg/L 0.95 - 1.2 1.03 1.11 --

Sulfate mg/L 200 - 240 219.86 237.36 250

Total Dissolved Solids mg/L 500 - 660 585.14 629.71 500

Total Phosphorous as P mg/L 0.02 - 0.11 0.06 0.02 --

Total Suspended Solids mg/L Non-Detect - 27 7.03 7.86 --

Turbidity NTU 0.19 - 5.8 1.11 1.07 5

SUMMARY OF PRIMARY CONSTITUENTS(Does not include expanded water quality Constituents tested in November/December)


Constituent Location Month Value Units Federal MCL Source of Contamination

2,4-D Agriculture and Landscaping, Runoff

San Xavier May 0.82 µg/L 70

Arsenic Natural deposits, Industrial processes

Havasu Feb 2.2 µg/L 10

Lake Pleasant Feb 2.7 µg/L 10

Lake Pleasant Parkway Feb 2.2 µg/L 10

San Xavier Feb 2.1 µg/L 10

Havasu May 2.4 µg/L 10

Lake Pleasant May 3.8 µg/L 10

Lake Pleasant Parkway May 2.7 µg/L 10

San Xavier May 2.7 µg/L 10

Havasu Aug 2.6 µg/L 10

Lake Pleasant Aug 5.0 µg/L 10

Lake Pleasant Parkway Aug 2.7 µg/L 10

San Xavier Aug 2.9 µg/L 10

Havasu Nov 2.5 µg/L 10

Lake Pleasant Nov 3.5 µg/L 10

Lake Pleasant Parkway Nov 2.3 µg/L 10

Hexavalent Chromium1 Natural deposits, Industrial processes





Perchlorate2 Natural deposits, Industrial processes

Lake Pleasant Feb 3.9 µg/L 11

Uranium Natural deposits, Industrial processes


Lake Pleasant Parkway Feb 4.1 µg/L 30


Lake Pleasant Parkway May 4.2 µg/L 30


Lake Pleasant Parkway Aug 3.8 µg/L 30


Lake Pleasant Parkway Nov 3.9 µg/L 30

DETECTED CONTAMINANTS TABLE

1 Numeric water quality standard (21 µg/L) determined by the Arizona Department of Environmental Quality for domestic water sources (18 A.A.C. 11)

2 Arizona Department of Health Services developed a health-based guidance level for perchlorate of 11 µg/L in April 2005.


2,4-D is one of the oldest and most widely available herbicides and defoliants in the world, having been commercially available since 1945. It can be found in numerous commercial lawn herbicide mixtures, and is widely used as a weedkiller on cereal crops, pastures, and orchards. Over 1,500 herbicide products contain 2,4-D as an active ingredient. 2,4-D was detected on just one occasion (May) and was 85 times lower than the Federal MCL.

Arsenic is a chemical element that occurs naturally in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is commonly found in groundwater throughout the southwestern United States. The primary use of arsenic is in alloys of lead (for example, in car batteries and ammunition). The Federal MCL for arsenic is 10 µg/L the highest level measured by CAP was 5.0 µg/L.

Hexavalent Chromium is a form of the metallic element chromium. Chromium is a naturally occurring element found in rocks, animals, plants, soil, and volcanic dust and gases. It comes in several different forms, including hexavalent chromium or chromium (VI). Hexavalent chromium can occur naturally in low levels, but is generally produced by industrial processes. Hexavalent chromium is widely used in electroplating, stainless steel production, leather tanning, textile manufacturing, and wood preservation. In heavy doses, inhaled hexavalent chromium is recognized as a human carcinogen, but levels found by CAP in Lake Havasu were just a fraction of the Federal MCL.

Perchlorate is a chemical compound that occurs in low levels naturally, but the majority of perchlorates are commercially produced salts. They are mainly used for propellants, exploiting properties as powerful oxidizing agents and to control static electricity in food packaging. Perchlorate contamination in food, water, and other parts of the environment has been studied in the U.S. because of its harmful effects on human health. Perchlorate was detected in Lake Pleasant on one occasion and it was at a level one-third of the Federal MCL.

Uranium occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals. Many contemporary uses of uranium exploit its unique nuclear properties for power and weapons. Most ingested uranium is excreted during digestion, but when inhaled by way of dust into the lungs, pose a more serious exposure hazard. However, levels found in the CAP System were 7 to 10 times lower than the Federal MCL.

DETAILED INFORMATION ON DETECTED CONTAMINANTS


2019 Lake Pleasant Operations

115,054 AF of gaged inflow

Highest Water Elevation (4/25/19) 1,696.98 (ft)

Lowest Water Elevation (8/31/19) 1,663.00 (ft)

Change in Elevation: 33.98 (ft)

2019 Lake Pleasant Release Summary

Month Waddell Releases (AF)

Pass-Thru (AF)

% Ratio

January 18,404 89,618 5/95

April 13,494 134,807 10/90

May 15,508 137,884 10/90

June 84,160 84,005 50/50

July 93,396 74,264 55/45

August 75,286 82,319 50/50

The CAP system utilizes Lake Pleasant as a seasonal pump-storage reservoir. During a typical year, Colorado River water is pumped into the reservoir from October to May when water demands and electricity costs are lower. During the summer, when water demands and electricity costs are higher, water is released from the reservoir for customer deliveries. These schedules may be modified based on required maintenance of the system, as well as rainfall that impacts customer demand. In 2019, small releases were made during January and April to accomodate maintenance activities, while normal pumping occurred from late May to the end of August.

During summer months, the reservoir typically stratifies, with a thermocline developing at a depth of approximately 40-60 feet below the water surface (Appendix B). Although the intake portals at Waddell Dam are set at two different levels, CAP only utilizes the lower portals (elevation 1515) to best manage water quality and reduce taste and odor issues associated with anoxic water. This may seem counter-intuitive, as lower quality water is near the bottom of the reservoir (hypolimnion), but retaining the oxygen-rich epilimnetic water in the reservoir improves the overall quality of water to delivered to CAP customers.

LAKE PLEASANT OPERATIONS


TASTE AND ODOR RESEARCH PROGRAMMunicipal water treatment plants, which treat water supplies from the CAP and SRP systems, occasionally experience seasonal taste and odor episodes. Compounds produced by Cyanobacteria (blue-green algae), such as MIB and geosim, are the suspected causes of the taste and odor problems. These compounds are found at extremely low levels and do not pose a human health hazard.

An ongoing cooperative monitoring program, led by Arizona State University (ASU), has provided a valuable long-term data set for compounds that may cause the taste and odor issues in the CAP and SRP systems. This includes measurements of MIB, Geosmin, Dissolved Organic Carbon (DOC), UV254, and Total Dissolved Nitrogen (TDN).

This program publishes a monthly newsletter, which contains sampling results and a general discussion of the findings. A summary of the project, newsletters distributed from January 2006 – April 2014, and a final report are available at:

https://faculty.engineering.asu.edu/pwesterhoff/research/regional-water-quality-issues/regional-water-quality-newsletter/

Newsletters from 2016-2019 are available at:

https://wet.asu.edu/regional-water-quality/

ASU experienced technical difficulties in collecting, analyzing, and reporting data in 2019, so specific information is limited. However, municipalities have indicated that, similar to previous years, CAP water continues to be of excellent quality and does not contribute to significant levels of MIB and Geosmin.


The Colorado River provides domestic and industrial water to approximately 27 million people in the western United States and is used to irrigate approximately 4 million acres of land. However, salinity levels in the river water have historically been high, which can reduce crop yields, limit the choice of crops that can be grown, make the land unsuitable for agricultural purposes, and kill riparian vegetation.

In 1975, the seven Colorado River Basin states adopted a salinity standard for the Colorado River. That standard, which was approved by the EPA, is composed of numeric criteria for total dissolved solids and a plan of implementation to meet the criteria. Since the program’s implementation, salinity in the river has been reduced by approximately 100 mg/L. For CAP customers this translates to approximately 220,000 tons of salt that did not enter the CAP service area.

CAWCD participates with Arizona and the other Basin States and Federal Agencies in the implementation of the Program. CAWCD also works with the Colorado River Basin Salinity Control Forum and the Forum’s technical workgroup to address funding and other issues associated with program implementation.

SALINITY CONTROL PROGRAM


GROUNDWATER RECHARGECAWCD has developed and currently operates six recharge projects:

1. Pima Mine Road Recharge Project

2. Lower Santa Cruz Recharge Project

3. Agua Fria Recharge Project

4. Hieroglyphic Mountain Recharge Project

5. Tonopah Desert Recharge Project

6. Superstition Mountains Recharge Project

The Tucson Active Management Area (AMA) recharge facilities have a cumulative operational capacity of 80,000 acre-feet per year and include the Pima Mine Road and Lower Santa Cruz Recharge Projects. In the Phoenix AMA, there are four facilities: the Tonopah Desert, Hieroglyphic Mountains, Agua Fria, and Superstition Mountains Recharge Projects, with a combined annual operational capacity of 310,000 acre-feet.

A portion of the permitting process and regulatory compliance for these projects requires periodic water quality monitoring. The sampling results are compiled into an annual report, which is a matter of public record and is submitted to the Arizona Department of Water Resources. Copies of the reports or portions of the reports are available by contacting:

Phillip Pagels CAP Water Transmission Department (623) 869-2252 [email protected]


CENTRAL ARIZONA PROJECT

23636 North 7th Street Phoenix, Arizona 85024 (623) 869-2474

FOR MORE I NFORMATI ON:

Scott Bryan (623) 869-2474 [email protected]

Phillip Pagels (623) 869-2252 [email protected]

www.CentralArizonaProject.com

GET SOCIAL WITH US!

APPENDIX A. WATER QUALITY TABLES

Central Arizona Project | A1

Constituent Units MRL Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Field Measurements

Temperature oF --- 52.8 53.8 56.7 67.3 56 77.9 80.7 84.4 81.2 75.3 62.0 58.8

Dissolved Oxygen mg/L --- 10.47 --- 10.34 9.69 --- 9.25 9.3 9.8 7.69 7.24 9.54 9.06

Specific Conductance

µS/cm --- 907 894 883 920 --- 920 913 904 926 924 926 911

pH --- 7.66 8.13 7.83 7.81 8.24 8.47 8.38 8.12 8.06 7.96 8.07 7.97

Primary Analytes

Alkalinity mg/L 2.0 120 130 130 130 130 130 120 120 120 130 130 130

Alpha, Gross pCi/L 3.0 Expanded water quality testing ND ND

Aluminum µg/L 20.0 Expanded water quality testing 150 170

Ammonia Nitrogen mg/L 0.05 ND 0.084 ND 0.079 0.072 ND ND ND ND ND ND ND

Antimony µg/L 1.0 Expanded water quality testing ND ND

Arsenic µg/L 1.0 Expanded water quality testing 2.5 2.1

Barium µg/L 2.0 120 120 130 120 120 110 110 110 120 120 120 120

Beryllium µg/L 1.0 Expanded water quality testing ND ND

Beta, Gross pCi/L 3.0 Expanded water quality testing 5.4 5.0

Boron mg/L 0.05 Expanded water quality testing 0.13 0.13

Bromide µg/L 5.0 79 77 74 77 77 77 74 71 76 75 76 83

Cadmium µg/L 0.5 Expanded water quality testing ND ND

Calcium mg/L 1.0 71 75 74 71 72 71 69 67 69 71 70 72

Chloride mg/L 0.5 89 86 86 85 86 88 86 84 82 85 88 86

Chromium (Total) µg/L 1.0 Expanded water quality testing ND ND

Cobalt µg/L 2.0 Expanded water quality testing ND ND

Copper (Dissolved) µg/L 2.0 Expanded water quality testing ND ND

Copper (Total) µg/L 2.0 ND ND ND ND ND ND ND ND ND ND ND ND

Dissolved Organic Carbon mg/L 2.8 3.1 2.9 3.3 3.0 3.1 3.0 2.8 3.2 3.2 3.3 3.0 2.8

Fluoride mg/L 0.05 Expanded water quality testing 0.32 0.35

Germanium µg/L 1.0 Expanded water quality testing ND ND

Hexavalent Chromium µg/L 0.02 Expanded water quality testing 0.11 0.05

Iron (Dissolved) mg/L 0.02 ND ND ND ND ND ND ND ND ND ND ND ND

Iron (Total) mg/L 0.02 ND 0.089 0.028 ND 0.084 0.029 ND ND 0.032 0.19 0.20 0.19

A2 | 2019 Water Quality Annual Report

LAKE HAVASU 2019 (MARK WILMER PUMPING PLANT)


Lead (Total) µg/L 0.5 Expanded water quality testing ND ND

Magnesium mg/L 0.1 25 25 25 24 25 25 25 24 25 25 26 26

Manganese µg/L 2.0 2.4 4.1 2.4 2.3 5.1 3.7 2.1 3.0 5.6 12 8.1 9.5

Mercury µg/L 0.2 Expanded water quality testing ND ND

Molybdenum µg/L 2.0 Expanded water quality testing 4.5 4.4

Nickel µg/L 5.0 Expanded water quality testing ND ND

Nitrate as Nitrogen mg/L 0.05 0.27 0.28 0.32 0.34 0.30 0.28 ND ND ND 0.20 ND ND

Nitrite Nitrogen mg/L 0.05 Expanded water quality testing ND ND

Orthophosphate as P mg/L 0.01 ND ND ND ND ND ND ND ND ND ND ND 0.01

Orthophosphate as PO4 mg/L 0.031 Expanded water quality testing nD 0.031

Perchlorate µg/L 4.0 Expanded water quality testing ND ND

Potassium mg/L 1.0 4.9 4.8 4.4 4.6 4.6 4.6 4.5 4.4 4.7 5.0 4.8 4.7

Radium 226 pCi/L 1.0 Expanded water quality testing ND ND


Selenium µg/L 5.0 Expanded water quality testing ND ND

Silica mg/L 0.5 8.1 8.5 8.2 7.4 7.8 7.6 7.5 7.4 7.8 9.1 12 9.4

Silver (Total) µg/L 0.5 Expanded water quality testing ND ND

Sodium mg/L 1.0 87 88 85 83 85 86 85 80 84 87 86 88


µS/cm 2.0 950 960 950 950 940 940 930 920 940 940 950 950

Strontium mg/L 0.01 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

Sulfate mg/L 0.5 230 220 220 220 220 220 220 210 210 210 220 210

Thallium µg/L 1.0 Expanded water quality testing ND ND

Total Dissolved Solids mg/L 10.0 610 600 580 580 580 570 570 560 570 550 660 580

Total Organic Carbon mg/L 0.3 Expanded water quality testing 2.8 2.8

Total Phosphorous as P mg/L 0.02 ND ND 0.11 ND ND ND ND ND ND ND ND ND

Total Suspended Solids mg/L 10.0 ND ND ND ND ND ND ND ND ND ND ND ND

Turbidity NTU 0.1 0.45 1.8 0.54 0.28 1.3 1.0 0.42 0.62 1.4 2.8 2.0 1.6

Uranium µg/L 1.0 Expanded water quality testing 4.4 4.4

Vanadium µg/L 3.0 Expanded water quality testing 3.0 ND

Zinc µg/L 20.0 Expanded water quality testing ND ND

LAKE HAVASU 2019 (CONTINUED)



Field Measurements

Temperature oF --- 51.1 54.9 57.6 65.8 64 77.2 79 84.9 80.1 74.1 61.4 58

Dissolved Oxygen mg/L --- 10.90 --- 10.68 9.1 --- 9.42 8.47 8.00 6.85 7.32 9.2 10.01

Specific Conduc-tance

µS/cm --- 900 896 884 923 --- 915 913 8.27 927 922 925 904

pH --- 8.00 8.04 8.72 8.24 8.25 8.45 8.26 9.08 8.01 7.91 8.09 8.06

Primary Analytes

Alkalinity mg/L 2.0 120 130 120 130 130 130 120 120 120 130 130 120

Alpha, Gross pCi/L 3.0 Expanded water quality testing ND 4.4

Aluminum µg/L 20.0 Expanded water quality testing --- ND

Ammonia Nitrogen mg/L 0.05 ND ND ND 0.13 ND ND ND ND ND ND ND ND

Antimony µg/L 1.0 Expanded water quality testing --- ND

Arsenic µg/L 1.0 Expanded water quality testing --- 2.3

Barium µg/L 2.0 110 120 120 120 120 110 110 110 120 120 --- 110

Beryllium µg/L 1.0 Expanded water quality testing --- ND



Bromide µg/L 5.0 76 79 70 78 73 73 72 73 74 77 75 78

Cadmium µg/L 0.5 Expanded water quality testing --- ND

Calcium mg/L 1.0 71 74 70 72 73 70 68 69 70 70 71 68

Chloride mg/L 0.5 89 87 87 85 85 88 86 86 83 85 88 87

Chromium (Total) µg/L 1.0 Expanded water quality testing --- ND

Cobalt µg/L 2.0 Expanded water quality testing --- ND

Copper (Dissolved) µg/L 2.0 Expanded water quality testing --- ND

Copper (Total) µg/L 2.0 ND ND ND ND ND ND ND ND ND ND --- ND

Dissolved Organic Carbon mg/L 2.8 Expanded water quality testing 3.0 2.8


Germanium µg/L 1.0 Expanded water quality testing --- ND

Hexavalent Chromi-um µg/L 0.02 Expanded water quality testing 0.12 0.12


Iron (Total) mg/L 0.02 ND 0.038 ND ND 0.54 ND ND ND 0.17 0.032 0.067 ND


LITTLE HARQUAHALA 2019


Lead (Total) µg/L 0.5 Expanded water quality testing --- ND

Magnesium mg/L 0.1 26 26 24 24 24 24 25 25 25 25 26 25

Manganese µg/L 2.0 ND 2.0 ND 5.9 21 2.2 2.1 2.1 11 6.0 --- ND


Molybdenum µg/L 2.0 Expanded water quality testing --- 4.4

Nickel µg/L 5.0 Expanded water quality testing --- ND

Nitrate as Nitrogen mg/L 0.05 ND ND 0.26 0.32 0.30 ND ND ND ND 0.21 ND ND


Orthophosphate as P mg/L 0.01 ND ND ND ND ND ND ND ND ND ND ND ND

Orthophosphate as PO4 mg/L 0.031 Expanded water quality testing ND ND


Potassium mg/L 1.0 4.7 4.8 4.5 4.7 4.7 4.5 4.5 4.7 4.7 4.7 4.9 4.7



Selenium µg/L 5.0 Expanded water quality testing --- ND

Silica mg/L 0.5 7.6 8.2 7.3 7.1 10 6.3 7.3 7.9 8.6 7.7 9.0 6.9

Silver (Total) µg/L 0.5 Expanded water quality testing --- ND

Sodium mg/L 1.0 89 88 83 83 83 83 85 84 83 85 88 87


µS/cm 2.0 940 960 950 950 940 930 930 920 940 940 950 940

Strontium mg/L 0.01 1.1 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

Sulfate mg/L 0.5 230 220 220 220 220 220 220 220 210 210 220 220

Thallium µg/L 1.0 Expanded water quality testing --- ND



Total Phosphorous as P mg/L 0.02 ND ND ND ND ND ND ND ND ND ND ND ND

Total Suspended Solids mg/L 10.0 ND ND ND ND 25 ND ND ND 11 ND ND ND

Turbidity NTU 0.1 0.19 0.52 0.21 0.28 2.5 0.63 0.38 0.31 5.6 1.7 0.96 0.74

Uranium µg/L 1.0 Expanded water quality testing --- 4.0

Vanadium µg/L 3.0 Expanded water quality testing --- ND

Zinc µg/L 20.0 Expanded water quality testing --- ND

LITTLE HARQUAHALA 2019 (CONTINUED)



Field Measurements

Temperature oF --- 54.7 52.4 60.5 65.4 68.2 67.3 69 73.9 80.2 74.3 65.9 57.8

Dissolved Oxygen mg/L --- 11.62 10.03 10.9 10.1 9.41 8.25 8.02 8.01 7.84 8.99 8.98 10.3


µS/cm --- 887 897 883 916 925 933 927 919 926 920 892 901

pH --- 8.45 7.95 8.29 7.70 8.07 8.17 8.04 8.08 8.13 8.16 7.91 7.97

Primary Analytes

Alkalinity mg/L 2.0 120 120 120 130 120 120 120 120 120 120 130 120

Alpha, Gross pCi/L 3.0 Expanded water quality testing ND ND

Aluminum µg/L 20.0 Expanded water quality testing 82 ND

Ammonia Nitrogen mg/L 0.05 ND ND ND 0.051 0.061 ND ND ND ND ND ND ND

Antimony µg/L 1.0 Expanded water quality testing ND ND

Arsenic µg/L 1.0 Expanded water quality testing 2.3 2.4

Barium µg/L 2.0 110 110 120 130 130 120 110 110 120 120 120 110

Beryllium µg/L 1.0 Expanded water quality testing ND ND



Bromide µg/L 5.0 73 77 71 68 77 82 80 77 72 73 79 75

Cadmium µg/L 0.5 Expanded water quality testing ND ND

Calcium mg/L 1.0 70 73 74 71 70 69 67 67 71 70 73 67

Chloride mg/L 0.5 88 88 87 85 85 89 88 82 85 84 87 87

Chromium (Total) µg/L 1.0 Expanded water quality testing ND ND

Cobalt µg/L 2.0 Expanded water quality testing ND ND

Copper (Dissolved) µg/L 2.0 Expanded water quality testing ND ND

Copper (Total) µg/L 2.0 ND ND ND ND ND ND ND ND ND ND ND ND

Dissolved Organic Carbon mg/L 2.8 Expanded water quality testing 3.2 2.9


Germanium µg/L 1.0 Expanded water quality testing ND ND

Hexavalent Chromi-um µg/L 0.02 Expanded water quality testing 0.11 0.049


Iron (Total) mg/L 0.02 ND ND ND 0.10 0.034 ND ND ND 0.25 0.18 0.088 ND


LAKE PLEASANT PARKWAY 2019


Lead (Total) µg/L 0.5 Expanded water quality testing ND ND

Magnesium mg/L 0.1 26 26 26 24 25 26 26 26 24 25 25

Manganese µg/L 2.0 ND ND ND 6.5 4.6 4.2 4.2 8.7 16 11 4.6 ND


Molybdenum µg/L 2.0 Expanded water quality testing 4.3 4.4

Nickel µg/L 5.0 Expanded water quality testing ND ND

Nitrate as Nitrogen mg/L 0.05 ND 0.27 ND 0.28 ND ND ND ND ND 0.20 ND ND


Orthophosphate as P mg/L 0.01 ND ND ND ND ND ND ND ND ND ND ND ND

Orthophosphate as PO4 mg/L 0.031 Expanded water quality testing ND ND


Potassium mg/L 1.0 4.6 4.6 4.5 4.6 4.8 5.0 4.9 4.8 4.6 4.8 5.0 4.6



Selenium µg/L 5.0 Expanded water quality testing ND ND

Silica mg/L 0.5 7.4 8.1 7.3 7.4 6.9 6.8 7.8 8.0 8.8 7.9 7.3 6.5

Silver (Total) µg/L 0.5 Expanded water quality testing ND ND

Sodium mg/L 1.0 90 88 87 86 86 89 87 86 82 84 90 84


µS/cm 2.0 940 950 940 950 950 960 950 940 930 940 940 940

Strontium mg/L 0.01 1.1 1.1 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.0

Sulfate mg/L 0.5 220 220 220 220 220 220 220 210 220 200 210 220

Thallium µg/L 1.0 Expanded water quality testing ND ND



Total Phosphorous as P mg/L 0.02 ND ND ND ND ND ND ND ND ND ND ND ND

Total Suspended Solids mg/L 10.0 ND ND ND ND ND ND ND ND 20 14 ND ND

Turbidity NTU 0.1 0.29 0.57 0.21 1.9 0.39 0.49 0.28 0.35 3.6 3.6 2.0 0.97

Uranium µg/L 1.0 Expanded water quality testing 3.9 4.1

Vanadium µg/L 3.0 Expanded water quality testing ND ND

Zinc µg/L 20.0 Expanded water quality testing ND ND

LAKE PLEASANT PARKWAY 2019 (CONTINUED)



Field Measurements

Temperature oF --- 53.5 52.6 61.9 66.5 74.5 71.2 71 73.2 82.3 75.6

NO

TE

ST

ING

55.7

Dissolved Oxygen mg/L --- 10.5 10.58 11.07 10.32 9.61 10.35 10.22 8.26 8.2 9.2 10.82


µS/cm --- 947 893 884 917 913 929 926 926 929 921 902

pH --- 7.39 8.10 8.42 7.66 8.41 8.27 8.22 8.01 8.08 8.17 7.79

Primary Analytes

Alkalinity mg/L 2.0 120 120 120 130 120 120 120 110 120 120 120

Alpha, Gross pCi/L 3.0 Expanded water quality testing 5.1

Aluminum µg/L 20.0 Expanded water quality testing ND

Ammonia Nitrogen mg/L 0.05 ND ND ND ND 0.13 ND ND ND ND ND ND

Antimony µg/L 1.0 Expanded water quality testing ND

Arsenic µg/L 1.0 Expanded water quality testing 2.5

Barium µg/L 2.0 110 110 120 110 120 120 110 120 120 120 110

Beryllium µg/L 1.0 Expanded water quality testing ND

Beta, Gross pCi/L 3.0 Expanded water quality testing 4.3

Boron mg/L 0.05 Expanded water quality testing 0.14

Bromide µg/L 5.0 92 72 72 70 71 76 88 75 71 68 71

Cadmium µg/L 0.5 Expanded water quality testing ND

Calcium mg/L 1.0 71 73 73 77 70 69 67 66 68 70 73

Chloride mg/L 0.5 93 88 88 85 87 89 90 88 84 86 90

Chromium (Total) µg/L 1.0 Expanded water quality testing ND

Cobalt µg/L 2.0 Expanded water quality testing ND

Copper (Dissolved) µg/L 2.0 Expanded water quality testing ND

Copper (Total) µg/L 2.0 ND ND ND ND ND ND ND ND ND ND ND

Dissolved Organic Carbon mg/L 2.8 Expanded water quality testing 3.0

Fluoride mg/L 0.05 Expanded water quality testing 0.31

Germanium µg/L 1.0 Expanded water quality testing ND

Hexavalent Chromi-um µg/L 0.02 Expanded water quality testing 0.12

Iron (Dissolved) mg/L 0.02 ND ND ND ND ND ND ND ND ND ND ND

Iron (Total) mg/L 0.02 ND ND ND 0.020 0.065 ND ND ND 0.13 0.18 ND


MCKELLIPS ROAD 2019 (MESA)


Lead (Total) µg/L 0.5 Expanded water quality testing

NO

TE

ST

ING

Magnesium mg/L 0.1 28 26 26 26 24 26 26 25 24 25 28

Manganese µg/L 2.0 3.6 2.0 2.6 4.0 6.2 3.6 4.9 5.1 9.0 10 1.9

Mercury µg/L 0.2 Expanded water quality testing ND

Molybdenum µg/L 2.0 Expanded water quality testing 4.4

Nickel µg/L 5.0 Expanded water quality testing ND

Nitrate as Nitrogen mg/L 0.05 ND ND ND 0.25 0.25 ND ND ND ND ND ND

Nitrite Nitrogen mg/L 0.05 Expanded water quality testing ND

Orthophosphate as P mg/L 0.01 ND ND ND ND ND 0.050 ND 0.86 ND ND ND

Orthophosphate as PO4 mg/L 0.031 Expanded water quality testing ND

Perchlorate µg/L 4.0 Expanded water quality testing ND

Potassium mg/L 1.0 5.3 4.6 4.6 5.0 4.5 5.0 5.0 4.9 4.6 4.8 5.2

Radium 226 pCi/L 1.0 Expanded water quality testing ND


Selenium µg/L 5.0 Expanded water quality testing ND

Silica mg/L 0.5 7.8 7.3 6.7 7.0 6.0 5.4 7.1 7.7 8.1 7.8 6.6

Silver (Total) µg/L 0.5 Expanded water quality testing ND

Sodium mg/L 1.0 95 87 86 91 85 89 88 82 82 84 93


µS/cm 2.0 990 950 940 950 940 950 950 960 940 940 930

Strontium mg/L 0.01 1.1 1.1 1.0 1.1 1.0 1.0 1.0 1.0 1.0 1.0 1.1

Sulfate mg/L 0.5 240 220 220 220 220 220 220 220 220 200 230

Thallium µg/L 1.0 Expanded water quality testing ND

Total Dissolved Solids mg/L 10.0 630 570 590 580 570 630 580 590 580 570 590

Total Organic Carbon mg/L 0.3 Expanded water quality testing 3.4

Total Phosphorous as P mg/L 0.02 ND ND ND ND ND ND ND ND ND ND ND

Total Suspended Solids mg/L 10.0 ND ND ND ND 12 ND ND ND ND 10 ND

Turbidity NTU 0.1 0.29 0.42 0.28 0.94 2.8 0.80 0.35 0.86 0.74 5.8 0.79

Uranium µg/L 1.0 Expanded water quality testing 4.0

Vanadium µg/L 3.0 Expanded water quality testing ND

Zinc µg/L 20.0 Expanded water quality testing ND

MCKELLIPS ROAD 2019 (CONTINUED)



Field Measurements

Temperature oF --- 54.4 55.6 63.6 66.3 69.8 74.7 74.5 75.5 81.2 63.6

NO

TE

ST

ING

54

Dissolved Oxygen mg/L --- 11.89 10.78 11.92 9.64 9.42 10.35 9.36 8.39 8.71 10.19 10.13


µS/cm --- 936 887 871 912 922 926 931 924 925 925 887

pH --- 7.69 8.24 8.40 8.10 8.02 8.34 8.02 8.15 8.21 8.16 7.69

Primary Analytes

Alkalinity mg/L 2.0 120 120 120 120 120 120 120 120 120 120 93

Alpha, Gross pCi/L 3.0 Expanded water quality testing ND

Aluminum µg/L 20.0 Expanded water quality testing 85

Ammonia Nitrogen mg/L 0.05 ND ND ND ND ND ND ND ND ND 0.054 0.063

Antimony µg/L 1.0 Expanded water quality testing ND

Arsenic µg/L 1.0 Expanded water quality testing 2.0

Barium µg/L 2.0 110 110 210 120 120 120 120 110 110 110 100

Beryllium µg/L 1.0 Expanded water quality testing ND

Beta, Gross pCi/L 3.0 Expanded water quality testing 5.0

Boron mg/L 0.05 Expanded water quality testing 0.12

Bromide µg/L 5.0 86 80 74 70 76 81 75 79 70 76 73

Cadmium µg/L 0.5 Expanded water quality testing ND

Calcium mg/L 1.0 66 70 120 71 70 68 70 66 69 69 55

Chloride mg/L 0.5 94 89 96 86 89 90 87 86 84 95 90

Chromium (Total) µg/L 1.0 Expanded water quality testing ND

Cobalt µg/L 2.0 Expanded water quality testing ND

Copper (Dissolved) µg/L 2.0 Expanded water quality testing ND

Copper (Total) µg/L 2.0 ND ND 8.4 ND ND ND ND ND ND ND ND

Dissolved Organic Carbon mg/L 2.8 Expanded water quality testing 3.2

Fluoride mg/L 0.05 Expanded water quality testing 0.32

Germanium µg/L 1.0 Expanded water quality testing ND

Hexavalent Chromi-um µg/L 0.02 Expanded water quality testing 0.12

Iron (Dissolved) mg/L 0.02 ND ND ND ND ND ND ND ND ND ND ND

Iron (Total) mg/L 0.02 ND ND 3.2 0.064 0.094 0.075 0.054 0.025 ND ND 0.06


BRADY PUMPING PLANT 2019


Lead (Total) µg/L 0.5 Expanded water quality testing

NO

TE

ST

ING

ND

Magnesium mg/L 0.1 26 26 26 25 26 25 26 26 26 26 25

Manganese µg/L 2.0 ND 2.1 170 5.9 6.4 8.8 6.5 5.5 5.4 3.9 4.0

Mercury µg/L 0.2 Expanded water quality testing ND

Molybdenum µg/L 2.0 Expanded water quality testing 4.1

Nickel µg/L 5.0 Expanded water quality testing ND

Nitrate as Nitrogen mg/L 0.05 ND ND ND ND ND ND ND ND ND ND ND

Nitrite Nitrogen mg/L 0.05 Expanded water quality testing ND

Orthophosphate as P mg/L 0.01 ND ND ND ND ND ND ND ND ND ND ND

Orthophosphate as PO4 mg/L 0.031 Expanded water quality testing ND

Perchlorate µg/L 4.0 Expanded water quality testing ND

Potassium mg/L 1.0 5.1 4.8 5.2 4.7 5.0 4.9 5.1 4.8 5.0 4.9 4.7



Selenium µg/L 5.0 Expanded water quality testing ND

Silica mg/L 0.5 6.3 5.9 23 6.6 5.6 5.3 7.1 7.4 7.4 5.9 3.4

Silver (Total) µg/L 0.5 Expanded water quality testing ND

Sodium mg/L 1.0 89 90 85 86 88 86 86 87 88 89 86


µS/cm 2.0 980 950 930 940 950 940 960 960 930 950 870

Strontium mg/L 0.01 1.0 1.0 1.2 1.0 1.1 1.0 1.0 1.0 1.0 1.0 0.95

Sulfate mg/L 0.5 240 220 240 220 220 220 220 220 210 230 220

Thallium µg/L 1.0 Expanded water quality testing ND

Total Dissolved Solids mg/L 10.0 610 590 590 600 570 600 500 590 580 600 520

Total Organic Carbon mg/L 0.3 Expanded water quality testing 4.0

Total Phosphorous as P mg/L 0.02 ND ND ND 0.020 ND ND ND ND ND ND ND

Total Suspended Solids mg/L 10.0 ND ND 27 20 ND ND ND ND ND ND ND

Turbidity NTU 0.1 0.19 0.22 1.2 0.44 0.46 1.4 1.0 1.5 0.51 0.75 0.97

Uranium µg/L 1.0 Expanded water quality testing 4.0

Vanadium µg/L 3.0 Expanded water quality testing ND

Zinc µg/L 20.0 Expanded water quality testing ND

BRADY PUMPING PLANT 2019 (CONTINUED)



Field Measurements

Temperature oF 52.2 52.1 63 64.9 69.1 78 80.2 79.5 78.5 62.8

NO

TE

ST

ING

48.4

Dissolved Oxygen mg/L 10.68 9.83 10.24 9.16 9.15 9.57 8.45 7.81 7.77 10.32 10.14


µS/cm 901 870 867 913 940 940 937 926.2 8.21 8.06 835

pH 8.04 8.32 7.42 8.30 7.81 8.34 8.04 8.19 906 918 7.78

Primary Analytes

Alkalinity mg/L 2.0 120 110 110 120 120 120 120 120 110

NO

TE

ST

ING

120

Alpha, Gross pCi/L 3.0 Expanded Water Quality testing ND

Aluminum µg/L 20.0 EXPANDED WATER QUALITY TESTING ND

Ammonia Nitrogen mg/L 0.05 0.20 ND ND ND ND ND 0.26 0.055 0.078 ND

Antimony µg/L 1.0 Expanded Water Quality testing ND

Arsenic µg/L 1.0 Expanded Water Quality testing 10

Barium µg/L 2.0 120 110 110 110 130 110 120 110 120 120

Beryllium µg/L 1.0 Expanded Water Quality testing ND

Beta, Gross pCi/L 3.0 Expanded Water Quality testing 5.8

Boron mg/L 0.05 Expanded Water Quality testing 0.13

Bromide µg/L 5.0 78 75 72 75 83 83 78 80 73 73

Cadmium µg/L 0.5 Expanded Water Quality testing ND

Calcium mg/L 1.0 67 65 67 70 68 67 68 65 62 70

Chloride mg/L 0.5 90 88 88 87 91 92 90 85 82 88

Chromium (Total) µg/L 1.0 Expanded Water Quality testing 1.2

Cobalt µg/L 2.0 Expanded Water Quality testing ND

Copper (Dissolved) µg/L 2.0 Expanded Water Quality testing ND

Copper (Total) µg/L 2.0 ND ND ND ND ND ND ND ND ND ND

Dissolved Organic Carbon mg/L 2.8 Expanded Water Quality testing 3.8

Fluoride mg/L 0.05 Expanded Water Quality testing 0.33

Germanium µg/L 1.0 Expanded Water Quality testing ND

Hexavalent Chromium µg/L 0.02 Expanded Water Quality testing 0.088

Iron (Dissolved) mg/L 0.02 ND ND ND ND ND ND ND ND ND ND

Iron (Total) mg/L 0.02 0.046 0.057 ND 0.030 0.038 ND 0.031 0.024 0.14 ND


SAN XAVIER PUMPING PLANT 2019


Lead (Total) µg/L 0.5 Expanded Water Quality testing

NO

TE

ST

ING

NO

TE

ST

ING

ND

Magnesium mg/L 0.1 25 25 26 26 26 27 27 26 24 27

Manganese µg/L 2.0 4.0 4.9 4.2 6.4 5.1 4.4 4.2 4.1 10 3.9

Mercury µg/L 0.2 Expanded Water Quality testing ND

Molybdenum µg/L 2.0 Expanded Water Quality testing 5.2

Nickel µg/L 5.0 Expanded Water Quality testing ND

Nitrate as Nitrogen mg/L 0.05 ND ND ND ND ND ND ND ND ND ND

Nitrite Nitrogen mg/L 0.05 Expanded Water Quality testing ND

Orthophosphate as P mg/L 0.01 ND ND ND ND ND ND ND ND ND ND

Orthophosphate as PO4 mg/L 0.031 Expanded Water Quality testing ND

Perchlorate µg/L 4.0 Expanded Water Quality testing ND

Potassium mg/L 1.0 4.7 4.8 4.7 4.9 5.2 5.1 5.2 4.9 4.6 5.1

Radium 226 pCi/L 1.0 Expanded Water Quality testing ND


Selenium µg/L 5.0 Expanded Water Quality testing ND

Silica mg/L 0.5 5.8 3.6 4.1 5.4 5.8 5.6 6.8 7.1 8.0 6.1

Silver (Total) µg/L 0.5 Expanded Water Quality testing ND

Sodium mg/L 1.0 88 88 90 90 90 89 88 88 81 91


µS/cm 2.0 950 930 930 940 960 950 950 950 910 930

Strontium mg/L 0.01 1.0 1.0 1.1 1.1 1.1 1.0 1.1 1.0 0.96 1.1

Sulfate mg/L 0.5 220 220 220 220 230 220 220 210 210 220

Thallium µg/L 1.0 Expanded Water Quality testing ND

Total Dissolved Solids mg/L 10.0 590 580 590 590 580 600 580 590 560 560

Total Organic Carbon mg/L 0.3 Expanded Water Quality testing 3.0

Total Phosphorous as P mg/L 0.02 ND ND 0.089 0.027 ND ND ND ND ND ND

Total Suspended Solids mg/L 10.0 ND ND ND ND ND 18 ND ND 11 ND

Turbidity NTU 0.1 0.68 0.57 0.48 0.68 0.50 1.1 0.89 1.1 3.3 2.3

Uranium µg/L 1.0 Expanded Water Quality testing 11

Vanadium µg/L 3.0 Expanded Water Quality testing 12

Zinc µg/L 20.0 Expanded Water Quality testing ND

SAN XAVIER PUMPING PLANT 2019 (CONTINUED)



Primary Analytes

Alkalinity mg/L 2.0 120 120 110 130

Alpha, Gross pCi/L 3.0 Expanded Water Quality testing ND

Aluminum µg/L 20.0 Expanded Water Quality testing 100

Ammonia Nitrogen mg/L 0.05 ND ND ND ND

Antimony µg/L 1.0 Expanded Water Quality testing ND

Arsenic µg/L 1.0 2.7 3.8 5.0 3.5

Barium µg/L 2.0 110 120 110 120

Beryllium µg/L 1.0 Expanded Water Quality testing ND

Beta, Gross pCi/L 3.0 Expanded Water Quality testing 6.1

Boron mg/L 0.05 Expanded Water Quality testing 0.14

Bromide µg/L 5.0 86 93 99 87

Cadmium µg/L 0.5 ND ND ND ND

Calcium mg/L 1.0 72 67 66 73

Chloride mg/L 0.5 90 87 95 89

Chromium (Total) µg/L 1.0 ND ND ND ND

Cobalt µg/L 2.0 Expanded Water Quality testing ND

Copper (Dissolved) µg/L 2.0 Expanded Water Quality testing ND

Copper (Total) µg/L 2.0 ND ND ND 2.8

Dissolved Organic Carbon mg/L 2.8 Expanded Water Quality testing 3.5

Fluoride mg/L 0.05 Expanded Water Quality testing 0.36

Germanium µg/L 1.0 Expanded Water Quality testing ND

Hexavalent Chromi-um µg/L 0.02 Expanded Water Quality testing 0.10

Iron (Dissolved) mg/L 0.02 ND ND ND ND

Iron (Total) mg/L 0.02 ND ND ND 0.05

Lead (Total) µg/L 0.5 ND ND ND ND

Magnesium mg/L 0.1 27 26 26 28

Manganese µg/L 2.0 2.8 ND 4.4 8.1

Mercury µg/L 0.2 ND ND ND ND

Molybdenum µg/L 2.0 Expanded Water Quality testing 4.6

Nickel µg/L 5.0 Expanded Water Quality testing ND


LAKE PLEASANT PARKWAY 2019


Nitrate as Nitrogen mg/L 0.05 ND ND ND ND

Nitrite Nitrogen mg/L 0.05 Expanded Water Quality testing ND

Orthophosphate as P mg/L 0.01 ND 0.45 ND ND

Orthophosphate as PO4 mg/L 0.031 ND 1.4 ND ND

Perchlorate µg/L 2.0 3.9 ND ND ND

Potassium mg/L 1.0 5.2 5.3 5.2 5.5



Selenium µg/L 5.0 ND ND ND ND

Silica mg/L 0.5 8.1 6.9 7.5 8.4

Silver (Total) µg/L 0.5 ND ND ND ND

Sodium mg/L 1.0 91 88 88 94


µS/cm 2.0 980 960 1000 970

Strontium mg/L 0.01 1.1 1.0 1.0 1.1

Sulfate mg/L 0.5 230 220 240 220

Thallium µg/L 1.0 Expanded Water Quality testing ND

Total Dissolved Solids mg/L 10.0 600 600 630 630

Total Organic Carbon mg/L 0.3 Expanded Water Quality testing 3.0

Total Phosphorous as P mg/L 0.02 ND ND ND 0.047

Total Suspended Solids mg/L 10.0 ND ND ND ND

Turbidity NTU 0.1 0.44 0.41 0.6 1.6

Uranium µg/L 1.0 Expanded Water Quality testing 3.9

Vanadium µg/L 3.0 Expanded Water Quality testing 3.3

Zinc µg/L 20.0 Expanded Water Quality testing ND

LAKE PLEASANT PARKWAY 2019 (CONTINUED)


APPENDIX B. LAKE PLEASANT PROFILES

Central Arizona Project | B1

1500

1520

1540

1560

1580

1600

1620

1640

1660

1680

Jan

Feb

Mar

Apr

May Jun

Jul

Aug

Sep

Oct

Nov De

c

Lake

Ple

asan

t Ele

vatio

n (f

t)

Lake Pleasant Temperature Profile

50-60

60-70

70-80

80-90

Degrees (oF)

B2 | 2019 Water Quality Annual Report

LAKE PLEASANT TEMPERATURE PROFILE

1500

1520

1540

1560

1580

1600

1620

1640

1660

1680

Jan

Feb

Mar

Apr

May Jun

Jul

Aug

Sep

Oct

Nov De

c

Lake

Ple

asan

t Ele

vatio

n (f

t)

Lake Pleasant Dissolved Oxygen Profile

0-2

2-4

4-6

6-8

8-10

10-12

DO (mg/L)

Central Arizona Project | B3

LAKE PLEASANT DISSOLVED OXYGEN PROFILE

cap water sources...1 numeric water quality standard (21 µg/l) determined by the arizona department...

Documents