Grave worries exist about increasing levels of nitrate in Canterbury's drinking water and the risk it poses to human health.
Experts are of the opinion that this is a matter to be taken very seriously. They also feel that intensive farming may have led to the present scenario.
Nearly thirty percent of the wells tested showed growing levels of nitrate and alarmingly these wells are the main source of drinking water in the rural areas.
"There are hotspots around Ashburton - they are not part of the community water scheme, they will be individual wells on farming properties."
High levels of nitrate pose serious health risks especially to pregnant women and babies.