SIOUX CITY, Iowa (AP) – Iowa cattle and hog producers are working to comply with new state rules that are designed to keep animal waste from polluting nearby waterways. The Sioux City Journal reports Craig Moss and his family created new concrete drainage systems with grates to ensure rain can leave their feedlot without carrying manure with it.

Moss says his family wants to make sure that fresh water flows around the feedlot and dirty water from the feedlot is directed through terraces into a field. The new clean water rules increased state inspections and oversight of large feedlots. The state adopted the rules last year to satisfy the Environmental Protection Agency’s concerns about lax enforcement.