Section 144-232-7-703.0 - DETERMINING SIGNIFICANT THREATS TO GROUNDWATER703.1Determining significant threats to groundwater: A finding by the commission that a water or geothermal heat exchange well is likely to undergo contamination in the movement of water, chemicals or microbes from the surface or near-surface to groundwater, either because of improper well installation or the absence of an adequate seal of the casing into bedrock shall support a Commission determination that the condition constitutes a significant threat of contamination of the groundwater below for the purposes of Section 501.110-144 C.M.R. ch. 232, § 7-703.0