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E. coli detected in almost half of NZ monitored wells

About half the groundwater wells across New Zealand monitored long-term are contaminated with E. coli. The agency Land, Air, Water Aotearoa (LAWA) said that E. coli levels, and those of nitrates, exceeded drinking water standards at a minority of wells. The report drew on data and information from about 1000 wells, not all of which were used for drinking water. Overall most groundwater was “very good quality”.

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