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The report also showed nitrate trends over recent years. For the wells with enough data, 47 per cent had nitrate concentrations logged as likely increasing over the past decade. Twenty-eight per cent showed little change, and 25 per cent of wells had nitrate levels believed to be decreasing. ECan groundwater science manager Carl Hanson said the results were not unexpected, with 11 per cent of wells tested over the E coli limit, and six per cent over the nitrate-nitrogen limit. All the limit-busting wells were privately-owned, he said. “The owners of all of these wells have been notified. Most of them are not used for drinking water.

New zealandCarl hansonCanterbury ecanSteve abelWorld health organisationபுதியது ஜீலாந்துகார்ல் ஹான்சன்ஸ்டீவ் ஏபெல்உலகம் ஆரோக்கியம் ஆர்கநைஸேஶந்