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Chlorine in Potable & Mains Water

What levels of Chlorine are Acceptable

The World Health Organisation has set a health based guideline maximum value of 5 mg/l for chlorine as a residual disinfectant in drinking water.

The levels in tap water in England and Wales are well below this guideline and most water companies aim to keep the level below 1 mg/l.

Your water company will provide you with a free water quality report showing the maximum and minimum level of residual chlorine in your local water supply on request.

You can test the level of chlorine in the water supplies using the test kits below.

 

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