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Indiana Department of Environmental Management

IDEM > Your Environment > Source Water Protection - Drinking Water > Source Water Assessment Program Source Water Assessment Program

Source water assessments are provided to public water systems by IDEM and are intended to provide basic information to public water suppliers regarding:

  • where their drinking water comes from
  • the degree, called susceptibility, to which the drinking water source may be impacted by potential sources of contamination.

Susceptibility Determination

A system's susceptibility was rated on a scale from low to high. To view the complete Source Water Assessment, please search the Drinking Water Branch Virtual File Cabinet.

To find out susceptibility determination of a public water system, you may download or view one of the files below. The spreadsheets are arranged by county. A brief explanation of each column in the spreadsheet: 

PWSID: Public Water Supply Identification Number
System Name: System Name on file with IDEM
County Name: County in which the system is located
System Status: Current status of system, either Active or Inactive
Susceptibility Determination: Final susceptibility determination made by IDEM