DNR events have been cancelled due to the Covid-19 outbreak. Safety of our users, attendees, partners and staff is most important. When possible, events will be rescheduled and that information will be distributed accordingly. Please check this site frequently for the latest closures, postponements and updates.
Water Quality Standards
The DNR manages water quality through the implementation of the state's Water Quality Standards. These standards are found in Chapter 61 of the Iowa Administrative Code. The States Water Quality Standards help ensure that all Iowans have surface waters that are fishable and swimmable to the fullest extent practicable, safe drinking water, groundwater that is free from harmful contamination, protection from the adverse effects of floods, and water resources that are put to their best beneficial uses.



+ Antidegradation
+ Use Assessments and Use Attainability Analysis
+ Chemical Criteria
+ Triennial Review

Under the Clean Water Act, a state shall from time-to-time hold public meetings for the purpose of reviewing applicable water quality standards and, as appropriate, modifying and adopting standards. See Chapter 61: Water Quality Standards. This review includes but is not necessarily limited to: Designated Uses, Criteria, and Antidegradation.

DNR Contact:
Roger Bruner
515-310-0247
roger.bruner@dnr.iowa.gov