Des Moines residents are confronting significant water quality issues as nitrate concentrations in the Raccoon and Des Moines rivers approach record highs. These elevated levels have led to the implementation of the city’s first-ever lawn watering ban, aiming to reduce water demand and ensure the safety of the drinking water supply.
Central Iowa Water Works (CIWW), serving approximately 600,000 people, reported nitrate levels nearing 9 milligrams per liter, just below the federal limit of 10 mg/L. High nitrate concentrations, often resulting from agricultural runoff, pose health risks such as birth defects and blue baby syndrome. The utility has been intensively treating water for over 55 days, incurring substantial costs.
In response to the crisis, CIWW has prohibited lawn watering to conserve water and maintain treatment capacity. Compliance with the ban has reduced demand by over 30%, allowing the utility to meet federal standards. However, officials acknowledge that this is a temporary measure and emphasize the need for long-term solutions to address the root causes of nitrate pollution.
Des Moines Water Works has expressed opposition to the U.S. Environmental Protection Agency’s decision to rescind the impaired status of segments of the Raccoon and Des Moines rivers. The utility argues that this reversal does not align with the operational and financial challenges of providing safe drinking water amid high nitrate levels.
As the community grapples with these water quality challenges, residents are encouraged to stay informed and participate in discussions on sustainable solutions to ensure a safe and reliable water supply for the future.