Environment Waikato will prosecute the owners and manager of a dairy farm near Tirau for allegedly discharging effluent through a neighbouring farm and into the Piarere Stream.
The farm on State Highway 1, five kilometres north of Tirau, was inspected by a Waikato Regional Council resource officer after a complaint was received in early October.
The officer found a considerable flow of effluent from a holding pond when he inspected the site. Tests revealed a high level of faecal contamination on a neighbouring property and in the stream.
The owners of the farms, and their farm manager will be prosecuted under the Resource Management Act 1991.