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Ashburton District Council is committed to providing water that is safe to drink and meets the requirements of the Health Act. This means complying with the Drinking Water Standards for New Zealand (DWSNZ). There are a range of treatment systems we use to reduce the risk of contamination and minimise the risk to public health.
Water is regularly sampled to confirm the safety and quality of the water we supply to our customers. The Drinking Water Standards sets out how often the supplies must be sampled. For example, water leaving the Methven water treatment plant is sampled twice a week.
Our monitoring process usually involves the following steps:
Council's laboratory has Ministry of Health recognition to do E. coli analysis and is independently audited every year.
If E. coli is found in the water the following steps are undertaken:
For more information on health standards relating to drinking water in New Zealand see Drinking-water – Ministry of Health
If you are not connected to a Council supply and have your own water supply, Council does not monitor its water quality.
You can get information about safe and healthy private water supplies from the Ministry of Health and information about the risks from nitrates in groundwater from Community and Public Health and Environment Canterbury.
If you would like to have your water tested, there are a number of laboratories that will do one-off samples. They will also be able to test for a wide range of things including chemicals and metals that the Council laboratory cannot.
If you are worried about the quality of your private water supply and need further information, please contact Council on (03) 307 7700.