The Monona Water Utility routinely monitors our water for potential contaminants according to Federal and State law. Monona’s drinking water is safe and meets all Environmental Protection Agency (EPA) and Department of Natural Resources (DNR) standards, and the City of Monona has had no violations of EPA or DNR safe drinking water requirements. The City issues an annual water quality report which is posted on this site and available at City Hall for the public to review. The City's water quality reports show lead levels well below the EPA's action level of 15 parts per billion (ppb).
Where Does Lead in Water Come From?
In Monona, the mains that bring water from the wells to your home are constructed of ductile iron. However, lead still can be found in some metal water taps, interior water pipes, or pipes connecting a house to the main water pipe in the street. Lead found in tap water usually comes from the corrosion of older fixtures or from the solder that connects pipes. When water sits in leaded pipes for several hours, lead can leach into the water supply. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking.