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Environmental Protection

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    Sanitary Sewage Overflow Reporting

    All publicly owned treatment works and privately owned domestic treatment works that own and operate a sewage collection system, including satellite sewage collection systems, must report to the Department all occurrences of sanitary sewer overflows…

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    Regulation of Wastewater Discharges

    In 1972, the United States Congress passed the Federal Water Act. The law authorized the U.S. EPA to delegate certain water pollution control responsibilities to any state that could demonstrate the necessary levels of expertise and authority to…

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    Sewer Service Area Planning Agencies

    The following agencies conduct sewer service area planning for the areas indicated. These agencies also review proposed sewer extensions and provide Sewer Service Area Conformance letters (also known as Water Quality Management letters). Links to…

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    WPDES Permits on Public Notice

    Public notices are required by law to alert interested members of the public of the DNR's intention to authorize a Wisconsin Pollutant Discharge Elimination System (WPDES) discharge to a water of the state. The notices are posted here on the DNR…

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    Guidance for a large Private Onsite Wastewater Treatment System (POWTS) for domestic wastewater Preliminary Design Report

    It is recommended that a Preliminary Design Report be prepared and submitted to the DNR and the Department of Safety and Professional Services for a project proposal involving a large Private Onsite Wastewater Treatment System (POWTS) that will…

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    Wastewater permits staff

    Choose the region in which your facility/site/municipality is located on the map below for regional wastewater staff listings. Click on the staff name to see their specialty areas, counties served and contact information.Staff located in the Madison…

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    WPDES Permits

    The DNR regulates the discharge of pollutants to waters of the state through the Wisconsin Pollutant Discharge Elimination System (WPDES) program. Wastewater permits contain all the monitoring requirements, special reports and compliance schedules…

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    Overview of the WPDES wastewater permit process

    The basic steps involved in issuing an individual (specific) non-controversial wastewater permit involve: Submission of permit application; Preparation of draft permit and supporting documents; Public noticing the permit; and Issuing the final…

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    Current WPDES Wastewater Permit Holders

    The Wastewater Program provides an online tool to help individuals find documentation related to final Wisconsin Pollutant Discharge Elimination System (WPDES) individual wastewater permits. The permit search tool is designed for convenient…

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    Applying for a WPDES Permit

    Application procedures for WPDES permits to discharge wastewater vary by the type of permit. General Permits General permits are used to cover groups of facilities that generate wastewater from relatively simple operations having similar types and…

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