Four farmers have been stung with fines totalling $45,000 for dirty dairying offences.
The offending stems from unrelated incidents at Putaruru and Waikite Valley, near Rotorua, between October 2009 and January this year.
Rotorua farmers David Preest and Herbert Wilson were fined $26,250 and $15,000, respectively, while Cameron Bishop, of Putaruru, was ordered to complete 150 hours' community work.
Barry Dixon, who now lives overseas, was fined $3750.
The prosecutions were brought by Waikato Regional Council under the Resource Management Act.