Considering the constituents in the wastewater, the proposed use of the reclaimed water, and the risk of human exposure, the issuance of a permit authorizing the use of reclaimed water will not interfere with the actual use of the groundwater as a source of potable water, or cause or contribute to a violation of the Massachusetts Surface Water Quality Standards or otherwise pose a threat to the public health, welfare, safety or the environment.
314 CMR, § 20.14