A wellhead protection plan (WHPP) is one way to prevent pollution or contamination of public water-supply wells and source water. It helps keep drinking water clean and helps Chanhassen avoid costly treatment and cleanup of contaminated groundwater and the need to drill new water-supply wells.
To develop the WHPP, the City determined the parts of the aquifers from which public drinking water is drawn. The City and its engineers then defined drinking-water supply management areas (DWSMAs) to be protected by the plan.
With this information, the group was able to:
Identify potential sources of contamination that might affect the DWSMAs.
Determine how to manage these potential contaminant sources.
Develop an alternative water-supply contingency plan in case Chanhassen’s drinking water sources are ever contaminated.