https://apnews.com/978cc6f9edb83389af50a5c1cb05d243

DES MOINES, Iowa (AP) — A Des Moines utility has for years engaged in a bitter struggle to clean up drinking water that comes from rivers teeming with agricultural pollutants, filing lawsuits, proposing legislation and even public shaming to try to force farmers to reduce runoff from their fields.

None of it has worked, so Des Moines Water Works is trying a less combative approach — inviting farmers to learn the latest techniques for reducing pollution at riverfront plots of corn and soybeans in the sprawling park where the utility filters the city’s drinking water.