Poll: Have you swum in a New Zealand river in the last 12 months?

For the first time, New Zealand's farming leaders are promising to help make the country's rivers swimmable for future generations.

The pledge, signed by a group representing 80 percent of the country's farmed land, states: "We are committed to New Zealand's rivers being swimmable for our children and grandchildren."

• Farmers pledge to help clean up NZ rivers