External Services

Urban nonpoint source pollution

Nonpoint source pollution, or polluted runoff, has many sources, including urban areas. Because most urban areas include such impervious surfaces as roads, building roofs and parking lots, rainfall and other precipitation have a more difficult time…

Nonpoint source TMDL implementation

Nonpoint source pollution continues to be a primary cause of water quality problems in Wisconsin. The state has numerous lakes, streams, and rivers that are not meeting water quality standards and are considered to be "impaired" as a result of…

Nonpoint Source Program

Wisconsin is a recognized leader in efforts to control nonpoint source (NPS) pollution. Since 1978, Wisconsin’s NPS Program has made significant progress in addressing runoff-related water quality problems that, in many cases, have existed for…

Agricultural nonpoint source pollution

Nonpoint source pollution (or "runoff pollution") of Wisconsin’s waters comes from many sources, including agricultural operations and croplands. When it rains or snow melts, that water may be polluted through contact with manure, feed leachate…

Spreadsheet Tool for Estimating Pollutant Loads (STEPL) webinar

The DNR and EPA offered a hands-on technical training on the Spreadsheet Tool for Estimating Pollutant Loads (STEPL) on Aug. 5, 2014. A recording of the training session and the presentation materials are available.

Nonpoint source program partners

Bringing together people, policies, priorities and resources is critical to the success of the state’s Nonpoint Source (NPS) Program. Partnering efforts strengthen the program by bringing in new ideas, increasing public understanding of the…

Nonpoint source program contacts

Find the nonpoint source coordinator who serves your county by choosing a county below:

Erosion Vulnerability Assessment for Agricultural Lands (EVAAL)

Agricultural technical standards and assistance

Technical standards Conservation practices used to meet the agricultural performance standards and prohibitions must be designed and installed according to accepted technical standards. Examples of conservation practices that could be used include…

Agricultural performance standards and manure management prohibitions

Agricultural performance standards and manure management prohibitions are outlined in Ch. NR 151, Wis. Adm. Code [exit DNR]. This rule establishes performance standards for urban and transportation sources of polluted runoff as well.