DairyNZ and Waikato Dairy Leaders' Group chairman Jim van der Poel had no sympathy for the Waikato dairy farmer who was last week fined $131,840 for over-irrigating effluent.
Mr van der Poel said local authorities had his organisation's full support in encouraging all farmers to meet their effluent obligations.
"We are disappointed, as I'm sure most dairy farmers are, that a few individuals continue to let the sector down through failing to comply with effluent management rules. There is certainly no excuse for repeated offences that could have been prevented," he said.
"The total fine in this prosecution is significant, and sends a strong message to farmers who need to do better. We support the Waikato Regional Council, and other regional councils, in monitoring and prosecuting farmers for serious infringements of the rules.
"From our point of view, any breach is one too many. Managing effluent is a necessary part of running an efficient dairy system. The sector needs those farmers who aren't doing the right thing with their effluent management to step up, take responsibility, and make the necessary changes."