City of Wenatchee buildings are closed to the public at this time. Please read the City Services Update for more information. The City of Wenatchee is working with local partners to provide accurate information about the Coronavirus (COVID-19) to the public. If you have symptoms and reasons to believe your symptoms are connected to COVID-19, please call your healthcare provider. If you have any questions about what is happening in Washington and how the virus is spread, visit the Washington State Department of Health website at:


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Stormwater Utility

Stormwater Utility Crew cleaning a catch basinThe City of Wenatchee owns and maintains a stormwater utility. The utility includes catch basins in the street, and an underground network of pipes that transport stormwater to a series outfalls,  many of which drain directly to the Columbia River. The City’s stormwater system also includes other stormwater control mechanisms including ponds, swales, tree boxes, and filters to promote infiltration of stormwater into the ground and treatment before it reaches the river. The entire stormwater system is intended to carry only rain water and snow melt. Garbage, wastewater, wash water, oil, paint, and all other types of waste and chemicals are prohibited from discharge to the stormwater system. Non-stormwater discharges can cause blockages to stormwater pipes and water quality concerns when the material reaches the river.

Since February of 2007, the City of Wenatchee, Chelan County, Douglas County, and the City of East Wenatchee have operated their stormwater utilities under the Eastern Washington Phase II Municipal Stormwater Permit. The permit requires each jurisdiction to implement a stormwater program with the goal of reducing the amount of pollution in stormwater. The current will expire in 2019 and a reissuance will follow.

To share resources and implement a consistent regional stormwater program, representatives from both cities and both counties have been working together to meet the requirements of the permit. This group is called the Wenatchee Valley Stormwater Technical Advisory Committee (WVSTAC). For the latest information regarding the regional stormwater program please visit the WVSTAC page.

Stormwater Frequently Asked Questions

Where do I go to report something?
We want to hear from you! If you have a stormwater comment, complaint, or compliment, please fill out an online Citizen Request

Keeping our stormwater system free of pollution is a priority! To report a spill or stormwater concern, please call our Stormwater Hotline at (509)888-3235. For after-hours emergencies please call (509) 665-2236.

What can go down a storm drain?

The best principle is only rain down the storm drain! Under the Eastern Washington Phase II Municipal Stormwater Permit discharges are broken into three categories: Allowable Discharges, Conditionally Allowable Discharges, and Illicit Discharges. For more information regarding the types of discharges shown in the table below, visit the corresponding web pages or contact the Stormwater Hotline (509)888-3235.

   It's never allowed in the storm drain... It's allowed  in the storm drain with conditions..  It's allowed in the storm drain... 
  •  Pet waste
  • Car wash water
  • Concrete wash out
  • Sediment
  • Paint
  • Automotive fluids (Oil, gasoline, diesel, anti-freeze, etc.)
  • Trash & debris
  • Carpet cleaning wastewater
  • Sanitary sewage
  • Pesticides & fertilizers
  • Food waste

**This list is not all inclusive, if a discharge is not listed in one of the other categories it is not allowed in the stormwater system. 

  •  Potable water sources; must be dechlorinated to a total residual chlorine of 0.1 ppm or less, pH-adjusted if necessary, and volumetrically and velocity controlled
  • Dechlorinated swimming pool, spa, and hot tub water; dechlorinated to 0.1 ppm or less, pH-adjusted, reoxygenated if necessary, volumetrically and velocity controlled
  • Street and sidewalk wash water, water used for dust control, and routine building wash down that does not use detergents
  •  Diverted stream flows
  • Rising ground waters
  • Uncontaminated ground water infiltration
  • Foundation drains
  • Air conditioning condensation
  • Irrigation water from agricultural sources that has commingled with urban stormwater
  • Springs
  • Uncontaminated water from crawl space pumps
  • Flows from riparian habitats and wetlands
  • Discharges from emergency firefighting operations
  • Non-stormwater discharges authorized by another NPDES permit or state waste discharge permit


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