As required by the federal Clean Water Act, the MPCA is conducting a triennial standards review (TSR) to obtain public input on the need for amendments and revisions to rules governing Minnesota water quality standards. All subject matter contained in Minnesota Rules (Minn. R.) chapters 7050 and 7052 is open for comment during the TSR. (Rulemaking to revise state standards is conducted separately from the TSR.) The public comment period for the triennial review ended on Feb. 9, 2018. Comment letters received and a summary of the Jan. 10, 2018, public meeting are available at the link below.