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The Industrial Stormwater General Permit covers new and existing point source discharges of stormwater associated with industrial activity to surface waters of the State. The permit requires developing and implementing a stormwater pollution prevention plan (SWPPP). The purpose of implementing an SWPPP is to minimize or eliminate the potential for contamination of stormwater by industrial activities.

What is stormwater runoff and what are its impacts?

Stormwater runoff is water from rain or snowmelt that doesn’t quickly infiltrate into the ground and flows over or through natural or man-made storage or conveyance systems. When areas are developed with impervious surfaces like buildings, parking lots, and roads; this can result in increased surface runoff rates, volumes, and pollutant loads. Stormwater runoff can pick up industrial pollutants and discharge them into nearby waterbodies or indirectly via storm sewer systems. Runoff from areas where industrial activities occur can contain pollutants from material storage, loading and unloading operations, outdoor process activities, illicit connections, and poor waste management practices.

What is a SWPPP?

A SWPPP is a site-specific, written document that:

  • identifies potential sources of stormwater pollution at the industrial facility;
  • describes stormwater control measures that are used to reduce or eliminate pollutants in stormwater discharges from the industrial facility; and
  • identifies procedures the operator will use to comply with the terms and conditions of the permit.

What are common SWPPP violations?

You are required to develop your SWPPP to address the specific conditions at your site and keep it up-to-date to reflect changes at your site both for your use and for review by the regulatory agencies responsible for overseeing your permit compliance. Here are some of the more common violations we see.

  • Not having a written SWPPP document.
  • Failing to review and modify SWPPP as needed.
  • Insufficient facility and drainage maps.
  • Not keeping documentation with SWPPP.


Ohio EPA recently hosted a Preparing a Stormwater Pollution Prevention Plan (SWPPP) webinar. This webinar discusses preparing a SWPPP, tips on writing the SWPPP, common mistakes, common violations, and resources available to help you write your SWPPP. Visit our YouTube Channel to listen to the recording and download the pdf of the PowerPoint.

If you have more questions, please contact Ohio EPA’s Central Office Division of Surface Water (DSW) stormwater permitting staff: Michael Joseph at, Anthony Robinson at, or Jason Fyffe at

Resources to Help You Write Your SWPPP