NPDES Operator Information

Several online resources are available for wastewater treatment plant operators:

Discharge Monitoring Report Forms
How to obtain permit-specific electronic DMRs from Iowa DNR Field Office Staff, and Instructions for Filing an eDMR. DMRs are also known as Monthly Operation Reports or MORs.

DNR Water/ Wastewater Operator Certification
Information on wastewater operator certification, including the operator certification database and training calendar.

NPDES Application Forms
Paper permit application forms and instructions for individual municipal, industrial, and semipublic NPDES permits.

Bypass Report Form
Within five days of a bypass, a written report describing the bypass must be submitted to the appropriate DNR Field Office. This form can used as the written report.

Antidegradation Analysis
Information on antidegradation and how to conduct an antidegradation analysis.

Bacteria Sampling
Information on how to sample treated effluent for bacteria, how to calculate a geometric mean, and a geometric mean calculator.

Certified Laboratories Facility Search
Find a certified laboratory in Iowa using the search function on the State Hygienic Laboratory website.

Treatment Agreements
Information on significant industrial users, treatment agreement requirements, and forms.

Individual NPDES Permit Amendment Online Request Form
Request a permit amendment. Additional supporting documentation and the amendment fee can be submitted after the Request Form is completed.

WWPIE Online Permit System
View current individual permits, draft permits, and draft amendments; sign up for permit issuance notifications; or find out which permit writer is working on the reissuance of a certain individual permit.

Rural Community Sewers
Disadvantaged community qualification information and forms, and information on rural communities and funding options for these communities.

CWSRF page
Information on Clean Water State Revolving Fund loans.

Wastewater Listserv
Sign up to receive updates on stakeholder meetings, wastewater rulemaking, general permit reissuances, Clean Water State Revolving Fund intended use plan revisions and meetings, operator trainings, and other news regarding the Iowa DNR's wastewater program.

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Wastewater Treatment Lagoon

NPDES Email Addresses
The NPDES Section accepts mail electronically at the following email address: Please submit mail other than permit applications and fees to this email address. 

Send permit applications to