What is the minimum horizontal distance between a sanitary sewage treatment and disposal system and streams classified as WS-I?

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Multiple Choice

What is the minimum horizontal distance between a sanitary sewage treatment and disposal system and streams classified as WS-I?

Setting a buffer between a septic system and surface water bodies is about protecting drinking-water sources and preventing contamination paths. For streams classified WS-I, which are designated as high-protection water-supply streams, the minimum horizontal setback is 100 feet. This distance helps keep effluent from the disposal field away from the stream via surface runoff or groundwater, giving soil and groundwater time to attenuate contaminants and reducing the risk to the water supply. The other distances are shorter than the required protection or are more conservative than the minimum: 50 and 25 feet don’t meet the WS-I standard, while 200 feet exceeds the minimum but isn’t the required distance.

Setting a buffer between a septic system and surface water bodies is about protecting drinking-water sources and preventing contamination paths. For streams classified WS-I, which are designated as high-protection water-supply streams, the minimum horizontal setback is 100 feet. This distance helps keep effluent from the disposal field away from the stream via surface runoff or groundwater, giving soil and groundwater time to attenuate contaminants and reducing the risk to the water supply. The other distances are shorter than the required protection or are more conservative than the minimum: 50 and 25 feet don’t meet the WS-I standard, while 200 feet exceeds the minimum but isn’t the required distance.

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