Stormwater Treatment Ordinance


The Stormwater Treatment Ordinance requires both private and public developers to treat stormwater for pollutants before releasing it into the city's rivers and streams.

The ordinance and the city's associated treatment program implement more natural systems such as rain gardens, bioretention cells, native vegetation swales, etc., that treat pollutants (soil, pet waste, salt, pesticides, fertilizers, oil, grease, litter, etc.) before they enter the waterways.

  • All new development plans that disturb more than one acre of land are required to provide stormwater treatment facilities.
  • Any expansion or redevelopment plans require developers to provide stormwater treatment facilities for the new impervious surface only.

This ordinance was adopted to comply with the U.S. Environmental Protection Agency and the city's National Pollution Discharge Elimination System permit requirements.