WATER CRISIS IN KZN : DROUGHT and... · WATER CRISIS IN KZN : DROUGHT Presented by: Manisha Maharaj...
Transcript of WATER CRISIS IN KZN : DROUGHT and... · WATER CRISIS IN KZN : DROUGHT Presented by: Manisha Maharaj...
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WATER CRISIS IN KZN :
DROUGHT
Presented by: Manisha Maharaj
Deputy Director: KZN
Date: 2 March 2017
2 March 2017
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The graph above indicates that the 2015 storage is ranked
amongst the 9th lowest since 1980 at nearly 52% reservoir
storage.
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Drought mitigation
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45 Tanker Purchase
605 Water tank installations
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162 Spring protection
189 Boreholes
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Limited Water Resource Potential
Water is not always located near uses
Surface Water Potential Ground Water Potential
Total Runoff = 49 billion m3/year (<50% of Zambezi river)Reliable yield for use = 10,2 billion m3/year (27% of runoff)Remaining development potential = 5,4 billion m3/yrPotential re-use of return flows = 1.9 billion m3/yr
Total potential = 19 billion m3/yearUtilizable potential = 5 billion m3/yearEconomical use is less due to size & locationCurrent est use = 2-3 billion m3/year
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• Capacity 10ML/day
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Goedertrouw Emergency transfer
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8 EMERGENCY TRANSFER SCHEMES CURRENTLY IN OPERATION
Ixopo Emergency Scheme
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uThongathi Emergency Scheme
SUPPLY
8 EMERGENCY TRANSFER SCHEMES CURRENTLY IN OPERATION
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Hazelmere Dam – Impact of uThongathi Pumping & Rationing
8 EMERGENCY TRANSFER SCHEMES CURRENTLY IN OPERATION
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Hlimbitwa Emergency Scheme
8 EMERGENCY TRANSFER SCHEMES CURRENTLY IN OPERATION
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E J Smith Dam – Effects of Mpambanyoni Pumping
8 EMERGENCY TRANSFER SCHEMES CURRENTLY IN OPERATION
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RESTICTIONS
System / Dam Water Services Authority
Users Full Water Requirement (Ml/day)
Dam level Jan 2015
%
Dam Level Jan 2016
%
July 2015 restriction
March 2016 Restriction
Mgeni WSS (Spring Grove, Midmar Albert Falls, Nagle and Inanda)
Ethekwini, Ilembe, Ugu, Umgungundlovu
Howick, PMB, Durban, Upper South Coast
1140 78 59 None 15% domestic, 50% irrigation On Mgeni River System, Mooi River and Little Mooi to Mearns Weir
Mhlathuze WSS (Goedetrouw Dam and local lakes)
Uthungulu & City of Mhlathuze
Richards Bay, indistry and irrigation
700 54 30 15% domestic, 10 Industry and 70% irrigation
40% domestic, 15% Industrial, 80% irrigation On Goedetrouw Dam and Mhlathuze River System
Ntshingwayo Dam Amajuba and Umzinyathi DM
Newcastle Dundee, Glencoe, Nquthu
190 76 54 None 30% domestic, 100% irrigation On Buffalo River system downstream of the Driel Barrage and Spioenkop Dam, the Mooi River downstream of Mearns Weir and the Bushmans River downstream of Wagendrift Dam
Klipfontein Zululand Vryheid, Ulundi and Irrigation
50 95 19 20% domestic 50% irrigation
50% domestic, 100% irrigation On Klipfontein and White Mfolozi
Hluhluwe Dam Umkhanykude Hluhluwe and irrigation 40 62 23 50% domestic, 100% irrigation On Hluhluwe Dam and river system
Hazelmere Dam Ilembe and Ethekwini
Ballito, Ndwedwem Tongaat and irrigation
40 37 33 30% domestic 100% irrigation
50% domestic, 100% irrigation on Hazelmere Dam, Mdloti River system, and oThongathi River system
Umzinto WSS (Umzinto and EJ Smith Dams)
Ugu DM Umzinto, Pennington and surrounds
30 30% all users 30% domestic, 100% irrigation On Ej Smith and Umzinto Dams, the Umzinto River system and the Mpampanyoni River system
Crystal Springs Harry Gwala Kokstad 12.5 10 None 50% domestic
Lake Merthley Umzinyathi Greytown and surrounds 4.2 10 30% all users 50% domestic
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Drought Operating Rules
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Small buffer maintained
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COMMUNICATION STRATEGY
• The program has begun using print media, radio, press conferences, street pole advertising and school awareness
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UGU DISTRICT DROUGHT AWARENESS MEDIA ENGAGEMENTS
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District Mayor Cllr NH Gumede being interviewed by etv journalist eHowizit journilist interviews Municipal Manager Mr DD
Naido and Senior Manager Commucation Mr France Zama
Radio Slot interview by General Manager Water Services,
Ms Lungile Cele and Senior Manager Communications,
Mr France Zama
Distrirct Mayor, Cllr NH Gumede interviewed by SABC TV
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Drought Management
• DWS leads District and Supply System Joint Operating Committees
(JOCs) which are established to monitor critical systems, develop
interventions and monitor implementation of interventions Viz.:
1. North Coast JOC - Hazelmere, Maphumulo, KwaDukuza
2. Ugu JOC including Umzinto, Harding Weza, Umzimkhulu
3. Mhlathuze JOC - Uthungulu, City of Mhalthuze, Chamber of
Business, Irrigators
4. Mgeni JOC - Umsunduzi, Ethekwini, Ugu, Ilembe, Irrigators
5. Zululand JOC - Vryheid, Ulundi, Paulpietersburg
6. Umkhanyakude JOC - All areas
7. Hluhulwe JOC - Umkhanyakude, rate payers and irrigators
8. Umzinyathi JOC - Greytown, Dundee, Glencoe, Nqutu
9. Amajuba JOC – Amajuba & Newcastle
10. Uthukela JOC – Uthukela DM area
11. Uthungulu JOC
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Water Treatment
Plant Midmar DV Harris
Midmar +
DV Harris Point M
Upper
Mgeni
Total % Savings Durban HeightsWigginsMaphephetwa
Lower
Mgeni
Total
%
Savings MGENI TOTAL% Savings
Historical Average
(Ml/d) 280.95 62.05 343.00 88.09 343.00 508.47 284.98 2.71 796.16 1139.16
5% Reduced Demand
(Ml/d) 266.90 58.95 325.85 83.69 325.85 483.05 270.73 2.57 756.35 1082.20
10% Reduced Demand
(Ml/d) 252.86 55.85 308.70 79.28 308.70 457.62 256.48 2.44 716.54 1025.24
15 % Reduced
Demand (Ml/d) 238.81 52.74 291.55 74.88 291.55 432.20 242.23 2.30 676.74 968.29
05-Sep-16 212.21 82.13 294.34 63.42 294.34 14.19% 399.23 231.00 3.20 633.43 20.44% 927.77 18.56%
06-Sep-16 229.79 104.30 334.09 91.42 334.09 2.60% 453.02 272.37 3.30 728.69 8.47% 1062.77 6.71%
07-Sep-16 243.24 102.28 345.52 107.21 345.52 -0.73% 451.31 270.51 3.20 725.02 8.94% 1070.54 6.02%
08-Sep-16 235.00 96.66 331.66 106.05 331.66 3.31% 485.73 267.92 3.30 756.95 4.92% 1088.61 4.44%
09-Sep-16 201.00 70.23 271.23 75.06 271.23 20.93% 420.33 248.54 3.24 672.11 15.58% 943.34 17.19%
10-Sep-16 223.00 57.99 280.99 69.38 280.99 18.08% 445.43 277.05 3.20 725.68 8.85% 1006.67 11.63%
11-Sep-16 223.11 55.56 278.67 69.38 278.67 18.75% 378.26 235.88 3.20 617.33 22.46% 896.01 21.35%
12-Sep-16 222.80 55.23 278.03 69.38 278.03 18.94% 437.73 264.72 3.20 705.66 11.37% 983.68 13.65%
13-Sep-16 220.93 55.35 276.28 60.30 276.28 19.45% 462.09 250.80 3.30 716.19 10.04% 992.47 12.88%
14-Sep-16 220.84 55.42 276.26 60.30 276.26 19.46% 425.31 270.28 3.20 698.80 12.23% 975.05 14.41%
15-Sep-16 214.32 53.73 268.05 72.90 268.05 21.85% 434.75 252.57 3.20 690.52 13.27% 958.57 15.85%
16-Sep-16 219.00 57.63 276.63 72.60 276.63 19.35% 455.24 284.52 3.20 742.96 6.68% 1019.59 10.50%
17-Sep-16 223.00 62.77 285.77 66.93 285.77 16.68% 449.12 243.93 3.20 696.26 12.55% 982.03 13.79%
18-Sep-16 222.00 68.46 290.46 76.07 290.46 15.32% 431.01 243.93 3.20 678.14 14.82% 968.60 14.97%
19-Sep-16 220.67 69.52 290.19 62.31 290.19 15.40% 405.25 259.30 3.20 667.75 16.13% 957.94 15.91%
20-Sep-16 240.26 79.82 320.08 85.26 320.08 6.68% 419.21 258.40 3.30 680.91 14.48% 1000.99 12.13%
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NRW National: 37.2%
NRW KZN: 46.0%
Inefficiency of Use National:
25.4%
Inefficiency of Use KZN: 30.3%
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Average Water Losses/connection:
801
Average Real Losses/connection:
617
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CS 3 – Aggressive Pressure Management • To date 34 time controllers have been installed and
commissioned
• The savings are 4.4Ml/day or R8.8million/year
• The total cost for the 34 time controllers and labour was R1.7million thus ROI was 2.3months
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CS 3 – Accelerated Leak Detection and Repair • Started on an accelerated program in Jan 2016
• In Msunduzi to date 1,597 km of retic has been surveyed and 1,097 leaks have been found and repaired through 1 survey
• In Vulindlela to date 1,460 km of retic has been surveyed and 1,263 leaks have been found and repaired through 3 surveys
• The theoretical savings from the leak repair is approximately
4.1 Ml/day
• The total cost was R4.99million and ROI is 7.3months
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Internal Leak Repair
Completed internal leak repairs in:
Haniville – 2,808 leaks repaired
Thembalihle – 2,073 leaks repaired
Madiba Park – 1,473 leaks repaired
Cinderella Park – 4,807 leaks repaired
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Total Capex Requirement: R3.689 billion
(over 5 years)
Or approximately R725.8 million/annum
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Total Opex Requirement: R531.5 million
(over 5 years)
Or approximately R106.3 million per annum
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Water restrictions
Boreholes and Spring
Protection
Water conservation and demand management
Additional Storage
Awareness campaigns
Water Tanks Water Tankers
Combination bases on the characteristics of the water supply area
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Thank You