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 » Water and Sanitation » Understanding Water


Have you ever wondered how water gets to your tap?

In terms of the water cycle water is obtained from the rain, which get stored in rivers and dams where it is stored before commencing the journey to reach our taps.
As a municipality owned water utility Johannesburg Water (JW) provides clean drinking water to our 4.4 million customers who includes businesses and households within the jurisdiction of Johannesburg.

JW supplies 1 574 Ml/day of potable drinking water, procured from the bulk supplier, through a distribution network of 11 896 km, 122 reservoirs and water towers and 35 water pump stations. The partly treated water gets treated at our wastewater treatment works. During the water treatment process contaminants are removed from untreated water to produce drinking water that is pure enough for the most critical of its intended uses, usually for human consumption.

Substances that are removed during the process of drinking water treatment include suspended solids, bacteria, algae, viruses, fungi, minerals such as iron, manganese and sulfur, and other chemical pollutants such as fertilisers.

JW ensure water quality not only relate to the treatment of the water, but to its distribution after treatment as well. World Health Organisation (WHO) guidelines are generally followed throughout the world for drinking water quality requirements. In addition to the WHO guidelines, Department of Water and Sanitation have guidelines that JW follows to ensure consumers to have access to safe drinking water.