1.1 	A bill for an act
1.2 	relating to health; changing a groundwater protection provision;amending 
1.3 	Minnesota Statutes 2020, section 103H.201, subdivision 1.
1.4 	BE IT ENACTED BY THE LEGISLATURE OF THE STATE OF MINNESOTA:

1.5 	Section 1. Minnesota Statutes 2020, section 103H.201, subdivision 1, is amended to read:
1.6 		Subdivision 1.Procedure. (a) If groundwater quality monitoring results show that there 
1.7 	is a degradation of groundwater, the commissioner of health may promulgate health risk 
1.8 	limits under subdivision 2 for substances degrading the groundwater.
1.9 	(b) Health risk limits shall be determined by two methods depending on their toxicological 
1.10 	end point.
1.11 	(c) For systemic toxicants that are not carcinogens, the adopted health risk limits shall 
1.12 	be derived using United States Environmental Protection Agency risk assessment methods 
1.13 	using a reference dose, a drinking water equivalent, and a relative source contribution factor.
1.14 	(d) For toxicants that are known or probable carcinogens, the adopted health risk limits 
1.15 	shall be derived from a quantitative estimate of the chemical's carcinogenic potency published 
1.16 	by the United States Environmental Protection Agency ~~and~~ or determined by the 
1.17 	commissioner to have undergone thorough scientific review.