Properties not serviced by the city water system operate on private wells. The City of Prospect Heights does not regulate private wells. Residents are responsible for the maintenance and upkeep of their privately owned wells. Property owners wishing to check the quality of their well water must perform their own research on available water testing resources. Click here for a google search of local well water testing facilities. The City of Prospect Heights does not recommend or endorse any well water testing company or governmental facility.