Health Risk Limits Rules for Groundwater
Health Risk Limits Rules
Minnesota Rules, chapter 4717
The Minnesota Department of Health (MDH) promulgates Health Risk Limits (HRLs) Rules for chemicals in groundwater used as drinking water. MDH rulemaking was authorized under the 1989 Groundwater Protection Act. Rules were promulgated in 1993, 1994, 2007, 2009, 2011, 2013 and 2015. MDH is conducting rulemaking in 2016/2018 to amend the HRL Rules. Please see 2016/2018 Amendments - Summary and Overview for more information. To view existing MDH water guidance, which include HRLs, please see the Human Health-Based Water Guidance Table.
Administrative Rules
The Health Risk Limits are established in Minnesota Administrative Rules, Parts 4717.7810 through 4717.7900, as listed below.
| 4717.7810 | Health Risk Limits; Purpose and Scope. |
| 4717.7820 | Definitions. |
| 4717.7830 | For Toxic Effects Other Than Cancer. |
| 4717.7840 | For Cancer. |
| 4717.7850 | Use of Maximum Contaminant Levels. |
| 4717.7860 | Health Risk Limits Table. ** |
| 4717.7865 | Health Risk Limits for Triclosan. ** |
| 4717.7870 | Evaluating Concurrent Exposures to Multiple Chemicals. |
| 4717.7880 | Multiple Chemical Health Risk Limits: Noncancer. |
| 4717.7890 | Multiple Chemical Health Risk Limits: Cancer. |
| 4717.7900 | Chemical Breakdown Products. |
| 4717.7500* | 1993-94 Health Risk Limits. ** |
*IMPORTANT NOTE: HRLs listed in this Part are in effect unless superseded by a newer HRL. Check Part 4717.7860 before using a value from Part 4717.7500, or use the Human Health-based Water Guidance Values Table to find the appropriate value.
**New HRLs were added to 4717.7860 and 4717.7865, and repealed from 4717.7500 and 4717.7860. These changes went into effect on December 29, 2015.
