Iowa's Waters: Unfit for Fun, Fueling Dead Zone

Iowa, a major agricultural state, is grappling with significant water pollution that affects both public health and recreational enjoyment. Runoff from fertilizers and manure carrying nitrates and phosphorus drains into the state's numerous rivers and streams. This pollution is a leading contributor to the aquatic dead zone in the Gulf of Mexico.

As of 2024, more than half of Iowa's monitored river, stream, and lake sections did not meet state standards for swimming, drinking water, or supporting aquatic life. Algal blooms create hazardous conditions at beaches, while soil and bacteria, sometimes from sewage, make waters unappealing or unsafe for use.

Residents recall a time when summer activities like swimming and canoeing were cherished. However, experiences with sticky, contaminated water and warnings from rangers have led many, like former poet laureate Mary Swander, to avoid waterways. Hannah Ray J Childs continues to kayak but takes precautions against getting sick from the water.

Experts cite bacteria from animals and, in some areas, human sewage as major contributors. Climate change is expected to intensify problems with heavy rains washing away manure. Tile drainage systems on farms accelerate nutrient runoff into streams, feeding algae.

While other states mandate buffer zones near streams, Iowa relies on voluntary strategies developed by its agriculture and natural resources departments and Iowa State University. These include promoting reduced fertilizer use, improved crop management, and wetland creation. However, farmers face rising costs and slow returns on investment for adopting sustainable practices. Demand for financial assistance for these changes also outstrips available resources.