Forest & Bird says efforts by farmers to protect our waterways aren't up to scratch.

The conservation group says our wetlands are still suffering under the strain of dairy.

A new three-year progress report reveals almost all dairy cattle are now fenced off from waterways, and 83 percent farmers are getting information on nitrogen to help them farm more responsibly.

Forest & Bird advocacy manager Kevin Hackwell told Rachel Smalley some farmers still aren't pulling their weight.

"Yes, they've fenced an awful lot of the streams, but those are the biggest streams, what about the smaller ones where actually most of the pollution enters."

Hackwell said all regionally significant wetlands have yet to be fenced-off.

"100 percent of them should have been fenced by 2014. They were meant to have fenced them and they haven't."

LISTEN ABOVE AS KEVIN HACKWELL SPEAKS WITH RACHEL SMALLEY