RESPONSE TO THE RESTRICTIONS

IMPOSED ON THE INTEGRATED VAAL

RIVER SYSTEM

PRESENTATION FOR EKURHULENI METROPOLITAN MUNICIPALITY:

STAKEHOLDER SESSION HELD AT KEMPTON PARK CIVIC CENTRE

BY: SHUNTELLE GOW AND LONDANI LITHOLE

DATE: 22 AND 23 NOVEMBER 2016

INTRODUCTIONGazette Notice – 12 August 2016

INTRODUCTION

• Rand Water abstracts virtually all of its raw water from the

Integrated Vaal River System (IVRS)

• Supplies bulk potable water to Gauteng, parts of Mpumalanga,

North West and Free State

• 15% curtailments on urban water use – potable water produced

for domestic and non-domestic use

• Rand Water has committed to an on average 650 Mℓ/d

reduction, which will limit the potable water production to 3683

Mℓ/d.

• Rand Water and its clients has to implement water restrictions

for the short term as well as for the medium-term until end of

2024 when the next phase of the Lesotho Highlands Water

Project

IMPLEMENTATION

Received Gazette Notice- Agreed on

reduction targets with DWS

Notified customers on approach – restriction of

bulk meters

Commencement –

5 September 2016

Municipalities provided list of meters with %

restrictions

Bulk meters restricted by Rand Water

Meter readings taken by Rand Water on weekly

basis

Revised approach in October 2016

Provide municipalities with supply quotas

Municipalities to provide list of bulk meters to be

restricted to remain within quota volumes

Bulk meters are restricted by RW,

municipalities to manage and allocate available water to the end-users

MONITORING OF PROGRESS

• Weekly progress meeting was establishedo DWS

o Rand Water

o Municipalities

• Aspects monitored weekly:o Levels of Dams (National and IVRS)

o Volumes abstracted from the IVRS focusing on the abstraction

by Rand Water for potable water production

o Supply volumes to municipalities and progress on the reduction

targets

o Report back by municipalities on water supply challenges or

relevant issues

o Communication campaigns

o Water quality issues

o Water demand management initiatives

• Report to Provincial Water Management JOC Meeting,

held weekly

PROGRESS– VOLUMES ABSTRACTED

0.00

200.00

400.00

600.00

800.00

1000.00

1200.00

1400.00

1600.00

1800.00

Cu

mm

ula

tiv

e w

ate

r re

qu

irem

en

ts i

n m

illio

n c

ub

ic m

ete

rs

Abstraction by Rand Water for potable water production

Projected Requirement 2016 (Grossrequirement)

Restricted Requirement 2016: 15%

Actual abstraction

Projected Requirement 2016 (Gross requirement)

126.39Restricted Requirement

2016: 15%

129.15

0.00

20.00

40.00

60.00

80.00

100.00

120.00

140.00

160.00

Millio

n c

ub

ic m

ete

rs/m

on

th

Abstraction by Rand Water for potable water production

Projected Requirement 2016 (Gross requirement) Restricted Requirement 2016: 15% Actual abstraction

PROGRESS– VOLUMES ABSTRACTED

PROGRESS– OVERALL WEEKLY METER

CONSUMPTION

KL/day KL/day

KL/day 8.0%

KL/day 12.3%

KL/day 12.2%

KL/day 12.5%

KL/day 15.0%

KL/day KL/day

24-Oct-16 4 232 25524-Oct-16 reduced

reduced

reduced

4 100 219

OVERALL WEEKLY METER CONSUMPTION

4 437 238 17-Oct-16

5-Sep-16 4 823 787 target at -15%

reduced

723 568reduced 725 100 15% Required

31-Oct-16 4 236 878 31-Oct-16 reduced

14-Nov-16 4 098 687 14-Nov-16

7-Nov-16 4 221 571 7-Nov-16

17-Oct-16

PROGRESS– EKURHULENI MM

KL/day KL/day

KL/day 4.7%

KL/day 7.3%

KL/day 5.1%

KL/day 7.9%

KL/day 11.4%

KL/day KL/day

24-Oct-16 919 186

target at -15% 842 618

17-Oct-16

5-Sep-16 991 316

17-Oct-16 945 212

EKURHULENI METROPOLITAN MUNICIPALITY

148 697

31-Oct-16 940 597

7-Nov-16 912 777

14-Nov-16 878 175

reduced 113 141 15% Required

7-Nov-16 reduced

14-Nov-16 reduced

reduced

24-Oct-16 reduced

31-Oct-16 reduced

CHALLENGES

• Communication between Rand Water and Municipalities is crucial

- Special meetings are called to address issues as an when it occurs

• Additional staffing requirement (e.g. restricting and reading of meters)

• Stability of municipal systems are affected when reliant on Rand Water

supply pressures

• Fair and equitable allocation of limited/available water to the end-

consumer

• Consumption by end-consumers does not change despite restriction

interventions (physical restrictions, penalties, demand levies)

- For EMM it is particularly the business consumers

• Demand on systems exceed the available supply volumes = water supply

interruptions

11

ADDITIONAL SUPPORT TO MUNICIPALITIES

Potential savings per bulk meter DMAs to achieve 15% reduction

• Identification of priority areas

• Greatest potential for savings

• Design of appropriate interventions

• Monitor and evaluate effectiveness of programmes

© SAP 2008 / Page 12

ASSESSMENT OF DEMAND

RA

ND

WA

TE

R D

IRE

CT

ME

TE

RS

LO

GG

ED

:

SY

ST

EM

IN

PU

T V

OLU

ME

4

10

Ml/

d

AC

TIV

E U

SE

12

3 M

l/d

30

% o

f S

IV

Active use 123 Ml/d

MIN

IMU

M N

IGH

T F

LO

WS

28

7 M

l/d

7

0%

of

SIV

Normal legitimate night use - 4.7Ml/d

or 2% of MNF

Normal Residential night use - 3.2 Ml/d or 1% of MNF

Nig

ht

co

nsu

mp

tio

n -

10

.7 M

l/d

or

4%

of

MN

F Legitimate non-residential night use - 1.5 Ml/d

or 0.5% of MNF

Background leakage (unavoidable) -

6Ml/d or 2% of MNF

domestic background leakage - 1.3 Ml/d or 0.45% of MNF

Background leakage on mains - 0.8 Ml/d or 0.3% of MNF

Background leakage on connections - 3.9 Ml/d or 1.4% of MNF

Night leakage (bursts and losses) - 276.3 Ml/d or 96%

of MNF

Customer night leakage - estimated at 196.4 Ml/d or 68.43% of MNF

Nig

ht

lea

ka

ge

or

loss

es

- 2

76

.3 o

r

96

%

of

MN

F

Distribution system night leakage- 79.90 Ml/d or 27.83% of MNF

80-90%40% of total MNF

70-80%32% of total MNF

(TMNF)

60-70%12% of total MNF

Minimum Night flow analysis for end-consumer patterns

IMPLICATIONS

• The implications for failure to meet restriction targets:

o Non-compliance to the gazette notice issued on 12 August 2016

o Available water/supply quotas being exceeded

o Increase in planned and unplanned water supply interruptions

o Excessive demand on the Vaal River System, beyond its yield

o Effects of drought exacerbated

o Decision by System Operating Forum at next meeting in May 2017-

impose stricter restriction measures – (level 1,2 and 3 restrictions;

next level requires curtailments of 30%)

WAY FORWARD

• Have a holistic approach

o Optimise operations – improved response to bursts and leaks,

pressure management philosophy, integration of capital projects and

budget allocations, etc.

o Implement key initiatives – water shedding schedule, water efficient

devices and/or restrictors, focus on end consumer properties with

high minimum night flows, penalties, spot fines and enforcement, etc.

o Water demand management programme critical for sustained

achievement of reduction targets- identifying and prioritising

appropriate interventions

o Improved efficiency in water use by top ICI consumers (at least top

100) – Compliant industries to share best practices

o Targeted communications and awareness campaigns

Thank You