Source Water Assessment
and Protection Program

Source water assessment were completed for each of the approximately 760 public water supply systems operating in South Dakota (in 2000-2003) . A complete assessment is a three-step process that includes:

  1. delineating the part of the watershed or ground water area that contributes water to the water supply;
  2. identifying the significant potential sources of drinking water contamination in those areas;
  3. determining the water supply's susceptibility to contamination from those sources.

For a summary of the assessment methods, click in the table below.

South Dakota's Source Water Assessment Methods

Delineation Methods
Potential Contaminant Source Inventory Methods
Susceptibility Analysis Method

The following Source Water Assessment and Protection Program (SWAP) document was approved by the Environmental Protection Agency in October 1999.