Stellenbosch Umasipala

STELLENBOSCH MUNICIPALITY

WATER QUALITY AND BLUE DROP STATUS

Stellenbosch Municipality understands our role as Water Services Authority and as, such has the immediate objective of ensuring a continuous supply of safe and aesthetically pleasing drinking water at the most affordable price to our consumers.  This commitment is clear from the fact that Stellenbosch Municipality has been taking part in the Blue Drop Certification program since 2009.

The Blue Drop certification program is an incentive-based regulation of drinking water quality management that was initiated by the Department: Water Affairs (DWA) to introduce key requirements for effective and efficient management of drinking water quality by Water Service Providers.  As Water Service Authority, Stellenbosch Municipality has achieved the prestigious Blue Drop Award for the Stellenbosch System and all systems that receive potable water from the City of Cape Town namely Faure, Blackheath and Wemmershoek. In order to maintain this status and ensure that Stellenbosch Municipality makes use of best practice -principles as it relates to the supply of potable water to our consumers, various sampling and monitoring programs have been put in place.  These are both operational and compliance-based in nature. 

An average of 100 operational samples is taken weekly at the water treatment plants and at various sampling points on the network and reservoirs throughout the greater Stellenbosch Municipal area. These are supplemented by an average of 100 compliance samples, taken by an external service provider, per month.  The sampling schedules are set up in such a way as to ensure that the water sources, treatment works, storage reservoirs and points of use (consumer taps) are monitored.  The water samples are analysed by both our in-house laboratory and other accredited laboratories to ensure fast reliable results that are uploaded on the Blue Drop System.  This type of monitoring is however only aimed at monitoring quality on a routine basis.  For this reason the Water Treatment Works are equipped with on-line monitoring equipment that ensures constant monitoring of the water being treated through the various process units 

In the event of consumers experiencing some taste or odour problems from their drinking water it should not be seen as unsafe. Taste and odour substances occurring in water bodies are produced mainly from blue-green algae.  The Theewaterskloof and Jonkershoek Dams from which Stellenbosch abstract raw water, receive an inflow of nutrients following heavy rainfalls.  High temperatures and high nutrient concentrations stimulate the growth of the blue-green algae. The problem is further exacerbated by Actinimycetes that occur naturally in sediments of dams also contributing to odour. Discolouration (yellow or brown colour) is linked to humic acids and experienced after recent rains. These originate from the roots of Western Cape flora in mountain areas that serve as catchment for raw water sources. 

Stellenbosch Municipality would like to assure our consumers that the drinking water is safe to drink with regards to all substances indicated as possible water safety risks in the drinking water quality standard, SANS241: 11

 

Supply Systems

Blackheath (CCT)

Faure

 (CCT)

Franschhoek

(SM)

Stellenbosch

(SM)

Wemmershoek (CCT)

Average % compliance for SM  Dec 2013

Microbiological (Health)

99.9%

99.9%

81.3%

91.4%

97.9%

94.1%

Chemical (Health)

99.9%

99.9%

99.9%

99.9%

99.4%

99.8%

Physical (Non Health)

99.9%

99.9%

99.9%

99.9%

99.9%

99.9%

 

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