Health Risk Limits Rules, 2016/2017 Amendments - Contaminants - EH: Minnesota Department of Health

Health Risk Limits Rules for Groundwater
2016/2017 Amendments - Contaminants

July 2017:

MDH proposes amendments to the Health Risk Limits (HRLs) Rules approximately every two years. This allows new and updated human health-based water guidance values to be considered for adoption into rule.

Information about contaminants under consideration for the next amendments proposal is available below. As MDH continues to work on the chemicals under review, additional chemicals could be added to this list if the resulting water guidance is eligible for rule. Further, chemicals could be removed from the list if there is need to re-evaluate the existing guidance.

Chemical Abstract Service
(CAS) Number
Chemical Name
Previously adopted values in HRL Rule? (year adopted)
83-32-9 Acenaphthene Yes (1993)
34256-82-1 Acetochlor Yes (2009)
15972-60-8 Alachlor Yes (2009)
67-66-3 Chloroform Yes (2009)
(Formerly 205510-53-8)
Clothianidin No
21725-46-2 Cyanazine Yes (2009)
159-59-2 cis-1,2-Dichloroethene Yes (2009)
94-75-7 2,4-Dichlorophenoxyacetic acid (2,4-D) Yes (1993)
60-57-1 Dieldrin Yes (2009)
88-85-7 Dinoseb No
759-94-4 S-Ethyl-N,N-dipropylthiocarbamate (EPTC) Yes (1993)
206-44-0 Fluoranthene Yes (1993)
78-83-1 Isobutanol No
335-67-1 (and others) Perfluorooctanoic Acid (PFOA) and Salts Yes (2009)
1763-23-1 (and others) Perfluorooctane Sulfonate (PFOS) and Salts Yes (2009)
129-00-0 Pyrene Yes (1993)
109-99-9 Tetrahydrofuran No
153719-23-4 Thiamethoxam No
71-55-6 1,1,1-Trichloroethane Yes (2009)
75-01-4 Vinyl Chloride Yes (2009)


Updated Friday, July 14, 2017 at 09:42AM