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What is pH?
pH stands for Hydrogen ion concentration and is a measure of whether a liquid is acidic or alkaline. The pH scale ranges from 0-14. Water with a pH of seven is neutral, below seven is acidic, and above 7 is alkaline. Extremes of pH can affect the palatability of water. In Drinking Water Regulations it is defined as an Indicator Parameter.
What is an exceedance for pH?
The limit value set out for pH in the EU drinking water directive is a designated range of > 6.5 –

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