City of Naperville Water Utility

Providing essential water and wastewater services to Naperville residents.

Naperville’s Water and Wastewater Utility operates one of the state’s largest combined utility systems, managing both water distribution and sanitary sewer conveyance with wastewater treatment. The utility prides itself on delivering safe, reliable, and cost-efficient services, ensuring Lake Michigan drinking water consistently meets all quality standards. For any sewer concerns, the Water Utility is available 24 hours a day, 7 days a week for assistance.

About the City of Naperville Water Utility

Water and Sewer services in Naperville provide safe drinking water and reliable wastewater treatment for homes, businesses, and public facilities throughout the city. Managed by the City of Naperville, the system includes water treatment, distribution, sewer collection, and wastewater reclamation, all designed to protect public health and the local environment. Residents rely on these services daily for everything from household use to fire protection, with ongoing investments made to maintain infrastructure, water quality, and long-term sustainability.

Naperville’s Lake Michigan drinking water supply purchased through the DuPage Water Commission from the City of Chicago complies with all water quality standards as listed in the Safe Drinking Water Act.