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Reporting a Stormwater Problem

If you are looking for assistance with road flooding, plugged road culverts, cleaning of storm drains, other "maintenance" type issues, or you want to report illegal discharges of oil, sediment, garbage, or other pollutants into surface waters or stormwater facilities, please call our Hotline number. To report an issue after normal business hours, please call the non-emergency dispatch (after hours) number.

General Information

Business Information

Designer and Developer Information

Construction Contractor Information


Regulations pertaining to the Stormwater Utility and Stormwater Program are contained in the City of Walla Walla Municipal Code by subject as listed below:

NPDES Phase II Permit

The National Pollutant Discharge Elimination System (NPDES) is a permit program established by the Clean Water Act (CWA) of 1972 to regulate point source discharges of water pollution. Because impairment of so many of America's waterways was linked to polluted stormwater runoff, Congress amended the CWA in 1987 to also establish NPDES requirements for stormwater discharges.

Currently, there are three main types of NPDES stormwater permits: Construction, Industrial, and Municipal. All require planning and active management of stormwater using best management practices (BMPs).

The City of Walla Walla received an initial National Pollutant Discharge Elimination System (NPDES) Phase II Municipal Stormwater Permit in 2007 and was issued a new permit in August 2012. In the State of Washington, NPDES permits are issued by the Department of Ecology (DOE) in accordance with EPA regulations.

The City of Walla Walla developed and implemented a Stormwater Management Program as described below In order to reduce the discharge of pollutants to surface and groundwater.

Stormwater Management Program

Under the Permit, the City of Walla Walla is required to implement a Stormwater Management Program consisting of tasks associated with six minimum control measures:

  • Public education and outreach
  • Public involvement and participation
  • Illicit discharge, detection and elimination
  • Construction site runoff control
  • Post-construction stormwater management for new development and redevelopment
  • Pollution prevention and good housekeeping for municipal operations.

Stormwater Management Documents

To access any of the following documents from our online document server, select the Public Works folder, Public Documents folder, and then the Stormwater folder:

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