Regulations

SDWA amendments of 1996

The 1996 Amendments to the Safe Drinking Water Act provide for a greater focus on pollution prevention as an approach to protecting surface water and groundwater supplies from pollution. The amendments require that each State establish and implement a Source Water Assessment Program (SWAP) for the protection and benefit of drinking water sources throughout the United States. States will use information gained from SWAPs to assess drinking water sources so that local citizens, communities and the public water systems will have enough information to take proactive, preventative actions concerning protection of their drinking water sources. A SWAP is comprised of the following components:

• Delineation of Source Water Protection Area - defining the land area which contributes water to a surface or groundwater drinking water source.

• Contaminant Inventory - locating and identifying the land uses and activities within the source water protection area that could potentially release contaminants to the source water.

• Susceptibility Analysis - Evaluation of the contaminant inventory to determine the relative potential of a contaminant reaching a source water intake in an amount that would adversely impact drinking water quality.

WAC 246-290-135 Source Water Protection, Washington State (Office of the code reviser)

Once on their site, you can download the entire 246-290 WAC or scroll down to WAC 246-290-135 for the section specific to Washington State source water protection.

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