Buy your Hunting and Fishing license online today! We offer multi-year packages and combos for whatever you need to stay licensed.
Support conservation in Iowa by buying a natural resource plate for your vehicle.
Make your online reservation for state park cabins, camping sites and lodges.
Iowa DNR Customer Service
Mon - Fri, 8:00am - 4:30pm CST
Submit Online Inquiry
Information / Records Requests
Contact Information by County
Several online resources are available for wastewater treatment plant operators. Please see the links below for more information on the particular resource you are interested in.
For more information on wastewater operator certification, please see the DNR Water/ Wastewater Operator Certification page.
For information on Discharge Monitoring Report forms (DMRs, also known as Monthly Operation Reports or MORs), for individual permits, please see the DMR Forms page.
To complete an individual permit application online, or to find out which permit writer is working on the reissuance of a certain individual permit, please see the WWPIE Online Permit System page.
To obtain paper permit application forms and instructions for individual NPDES permits, please see the NPDES Application Forms page.
For information on antidegradation and how to conduct an analysis, please see the Antidegradation Analysis page.
For information on how to sample treated effluent for bacteria, and on how to calculate a geometric mean, see the Bacteria Sampling page.
To find a certified laboratory in Iowa, please go to the Certified Laboratories Facility Search page on the State Hygienic Laboratory site.
For information on significant industrial users and treatment agreement requirements and forms, see the Treatment Agreements page.
If your community is interested in qualifying as disadvantaged, and for information on rural communities and funding options for these communities, please see the Rural Community Sewers page.
For more information on Clean Water State Revolving Fund loans, please see the CWSRF page.