"The top three issues were poorly managed ponds, poorly managed effluent irrigation and poorly managed stormwater diversion systems," he said.
Staff inspected all aspects of the effluent treatment and disposal systems, and also checked runoff where the property had feedpads or standoff pads.
"It's great to see overall compliance has improved from the previous season," he said.
Regional Council staff will be at next month's Effluent Expo at Mystery Creek on March 17.
"The Expo is a great place to see the latest innovations in effluent management, as well as speak to a wide range of effluent specialists and industry experts. It would be great to see some Bay of Plenty farmers attend the St Patrick's day event," he said.