Water & Environment

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On the 16th July total Dam levels were 55 % and are rising nicely.  
WE STILL NEED LOTS OF RAIN AND MUST CONTINUE TO SAVE FOR NEXT YEAR !

Please see at the bottom of this page for a PDF with full details of the situation.
(and if we have forgotten to update this page with the latest info you can click on the Web Location at the bottom of this page called Resource.Capetown.Gov.za:Webloc)

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CITY OF CAPE TOWN 21 MAY 2018 STATEMENT BY ALDERMAN IAN NEILSON, EXECUTIVE DEPUTY MAYOR

 First drinking water from desalination a step toward greater resilience

 

We are very proud to announce that our temporary desalination plant in Strandfontein is now delivering high-quality, treated desalinated water into our supply system. 

 

This plant is injecting 4,7 million litres per day into the reticulation system and is being delivered to customers. It is foreseen that full production of 7 million litres will come online during June 2018.

 

Our reverse osmosis desalination plant in the Waterfront area is close to producing two million litres of drinking water per day while progress on the desalination plant at Monwabisi is also progressing well, with first water expected to be delivered by June and full production to be reached by July, if all goes according to plan. This plant is also set to produce 7 million litres per day.

 

It is important to note that these projects provide only a small contribution of our daily water requirement as a city. It forms part of our efforts to make additional water available without only relying on rainfall to fill our dams. However, our most effective tool to keep Day Zero away is to continue to reduce our usage. We have done well so far, and we must keep up our savings efforts during winter and in preparation for Summer 2018/19. We must continue to stretch our existing water supplies as we simply do not know what the actual winter rainfall will be.

 

Latest dam levels

Weekly dam level change

Average consumption for the previous week

21,1%

-0,3%

525 million litres of collective usage. Target remains 450 million litres of collective usage. 

 

The desalination projects, in conjunction with our groundwater and water re-use programmes, are part of our efforts to make our city more resilient to future drought shocks and to ensure that we thrive despite climatic uncertainty. To get through the current drought, however, it remains essential that we reduce our water usage and manage the water that we have left in our supply system through the City’s pressure management programmes and our continued emphasis on fixing leaks to reduce water losses.

 

The resilience programme, which came into effect in May 2017, has evolved considerably over the past year – with each evolution better reflecting the current reality based on the latest information as it becomes available. Substantial changes to the initial programme were announced in December/January 2017/18 and further amendments have been made since February and March, culminating in the New Water Programme.

 

For details about this programme, please see http://resource.capetown.gov.za/documentcentre/Documents/City%20research%20reports%20and%20review/Water%20Outlook%202018%20-%20Summary.pdf 

Much experience has been gained over the past year through the development of the various projects, and advice from professionals and subject matter experts, both locally and abroad. This knowledge is informing the current programme and priorities, for example:

·         Sustainable groundwater extraction is cheaper, specifically for large yields. Our approach remains conservative to ensure we maximise the water yield sustainably at the lowest possible cost. Importantly, the system design for groundwater extraction can only be finalised once yield and quality are established in the various clusters.

·         Temporary desalination and re-use should not be pursued further as emergency solutions as this is not affordable, and rarely provides the promised volumes of water.

·         For future resilience, permanent desalination and water re-use are recommended as alternative sources of water to add to ground and surface water supply sources.

The City’s augmentation programme has achieved in four months what would usually take two years in terms of project development and progress.

We intend to produce close to 100 million litres per day of additional water available by December 2018 and to ramp this up to over 150 million litres per day by April 2019.

Project

Date first water expected based on current information

Date full production expected based on current information

Temporary desalination:Monwabisi temporary desalination plant

 

Strandfontein temporary desalination plant

 

Waterfront temporary desalination plant

June/July 2018

 

 

 

 

May/June 2018

 

 

 

May/June 2018

June/July 2018

 

 

 

 

June/July 2018

 

 

 

June/July 2018

Groundwater programme: Cape Flats aquifer and TMG aquifer

 

Atlantis aquifer

Timeframes are dependent on variables such as water quality and land access.

 

 

 

 

 

Atlantis Aquifer – 12 million litres per day is currently being supplied from groundwater sources. Atlantis is thus off the grid already.

Water transfers:

Groenland

Groenland Water Transfer has been completed. A total of 7.3 MCM was released to Steenbras Upper Dam

Springs:

Albion Spring – 2.4 Ml/day

 

Main Spring (Oranjezicht) – 1.2 Ml/day

 

Albion Spring – 2,4 million litres per day

 

 

Main Spring (Oranjezicht) – 1,2 million litres per day

 

 

Lourens River – Currently treating 3,9 million litres per day at Helderberg water treatment plant

 

Lourens River – Currently treating 3,9 million litres per day at Helderberg water treatment plant 

Water re-use projects

Under way


Going forward, the City will continue to work together with water users to reduce water usage while also doing everything we can to conserve and diversify our water resources.

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Invasive Alien Vegetation is a serious problem in South Africa, where it usually has a negative impact on our scarce water resources. Click on the images below to see a larger picture to help you identify the Good and the Bad. The trouble is that 'Ugly' is missing because invasive alien plants often look attractive, which is why people plant them!

 
 
One of CIBRA's members (Mike Jennings) has written a review of the Alien Vegetation situation which you can read by clicking on the Word document titled 'CIBRA Invasive alien plants in and around Cape Town May 2015' in the list below:
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Below is a list of useful documents to view and download, and  a list of Internet links to more documents and some Websites of interest titled 'How to access CoCT Environmental documents'
NB please also look at our Waste Recycling page as waste disposal is a massive problem.

Environment


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CIBRA Cape Town,
Jul 16, 2018, 6:32 AM
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resource.capetown.gov.za:.webloc
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CIBRA Cape Town,
May 26, 2018, 8:32 AM