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The Water Service Knowledge System

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Info on the Quality of Drinking Water:

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How are we doing in terms of Water Conservation?

Water Test Scam

Sales people from various water purifier companies of late are making use of a so called “Precipitator” or Jam Jar Purity Test to supposedly prove that all water except for the water produced via their purification equipment, is impure and subsequently unsafe for human consumption.

The Jam Jar Test is basically a very crude, rudimentary, electrical circuit, similar to a car battery, or scientifically known as an electrochemical circuit. When used as a so-called “Precipitator” it gives the customer the impression that the water is not safe to drink. It does this by precipitating or electrochemically introducing natural salts into the water that appears as a brown “goo”, which makes the water look awfully dirty.

Note: Water purified using a reverse osmosis system (RO) has very little or no minerals present in the water, thus the water will not conduct electricity and the precipitation will not result.

The TDS Test is also being used by certain Sales People to test the water. This tester measures the amount of Total Dissolved Salts (TDS) in the water. The salesman could measure normal or purified water with a higher mineral count than RO and could state that if the water has a high TDS content then it is impure and unhealthy. TDS alone is not an indication of the safety of the water as it only tests the mineral content.

Read the full story at

Why is my Tap-Water White?

Drinking water can sometimes appear ‘milky’ or ‘cloudy’ when first drawn from the tap. This is usually caused by air and generally disappears after a short time.

If your water is white, milky or cloudy fill a glass with water and leave to stand for a few minutes. If the cloudiness clears from the bottom of the glass upwards, this shows the cloudy appearance has been caused by air. The tiny air bubbles will rise to the surface and the cloudy appearance will disappear.

Water Conservation

Want to know what your Water Footprint is?

Ever wondered about your Water consumption?

Click on this link for a Water Calculator

Want to see an overview of a typical Water Purification Process?

From "An illustrated guide to basic

water purification operations",

WRC report no TT 247/05.

The report is available from the

Water Research Commission Website

Want to see an overview of a typical Sewage Treatment Process?

From "An illustrated guide to basic

sewage purification operations",

Published by the Department of Water

Affairs And Forestry, 2002.

The report is available from the

Department of Water & Sanitation

How about Bottled Water ?

Check out this link to see how the process Bottled Water goes through compares to Tap Water:

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You can also visit the Homeadvisor -website for very useful ideas on how to save water in and around the house & how to “go green”