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Source Water Protection

About Assessment Reports

In order to properly protect drinking water, we need to understand what is going on in the surrounding watershed - both above ground as surface water and below ground as groundwater. It is also important to understand how and where surface water and groundwater interact as these are vulnerable areas that need special protection. An Assessment Report looks at an entire watershed, and the factors influencing the quality and amount of water (quantity) found there.

Assessment Reports are a key requirement of the Clean Water Act, involve technical components and include information such as the physical characteristics of the land, land uses, where drinking water sources are located, how much water is being used and how much is available for future uses, where vulnerable water source areas are located, what threats and issues already compromise drinking water sources and what threatens drinking water sources from overuse and contamination.

Assessment Reports will be the basis for developing Source Protection Plans and making local policy decisions for protecting drinking water quality and quantity.

What's in an Assessment Report?

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What are threats?

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How are Threats Calculated?

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Learn about Dense, Non-Aqueous Phase Liquids (DNAPLs)

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