The MPCA has opened the Draft Impaired Waters list for comment. Every two years, the MPCA updates this list which identifies the waters that do not meet Minnesota’s water quality standards. The list guides where the MPCA will be developing Total Maximum Daily Load (TMDL) plans. If your wastewater facility discharges upstream of an impaired water, this increases the likelihood that a limit that addresses the impairment could be placed in your permit.
You can find the draft list and instructions on how to comment here. We encourage all cities to work with your wastewater operators and engineers to review the list and determine whether you are discharging into an impaired water. If you believe the impairment listing is erroneous, you may want to work with your engineer or operator to submit comments. Because these determinations are unique to each water body, the CGMC will not be submitting comments on this list.
If you have any questions on this issue, please contact Elizabeth Wefel at firstname.lastname@example.org.