The City of Louisville cares about protecting our environment and waterways and is committed to preserving, enhancing and improving the water quality in Coal Creek.

In 2002, the City signed an Intergovernmental Agreement (IGA) with the Watershed Approach to Stream Health (WASH) Project (renamed Keep It Clean Partnership) which was formed to combine resources and implement programs to help improve the stormwater quality entering our streams and lakes as a result of runoff from residential, commercial and industrial areas.

In 2008, the City received a Colorado Department of Public Health and Environment (CDPHE) municipal separate storm sewer system (MS4) general permit for stormwater that flows through the city stormwater system and is not treated before entering the creek. The City uses the team approach from the Keep It Clean Partnership to address and comply with the MS4 general permit requirements as mandated by the Environmental Protection Agency (EPA) who delegated authority to CDPHE. For more information, visit the Keep It Clean Partnership Program and CDPHE Regulations.

Additionally, the City’s Program Description Document related to the MS4 permit is publicly available for review and comment by contacting the Environmental Compliance Program at ECS@LouisvilleCO.gov.

Stormwater Utility Rates

In 2007, the City Council adopted an ordinance that allows fees to be collected from property owners to fund the stormwater program. Fees are used for programs including: stormwater drainage capital improvement projects, maintenance of the storm drainage collector system, reduction in flooding occurrences, reduction of pollutants carried by stormwater to our waterways, and fulfilling the City’s MS4 permit requirements. In order to be most equitable, a flat fee is imposed on residential units while commercial businesses will be assessed fees based on impervious surface areas (driveways, parking lots, rooftops, etc.) of each developed property.

Storm water fees are charged on two separate classes of utility accounts: single-family detached residential and all others. The single-family detached residential have a monthly base rate. The all others classes will be charged a fee that is determined by dividing the calculated total square footage of impervious area on the property by the runoff area unit (RAU) of 3,500 square feet, then multiplying the result by the single-family residential base rate. For more information, see Utility Rates.

• Stormwater Utility Rates Frequently Asked Questions
• Storm Drainage and Technical Criteria Manual
• Guide to Maintaining Stormwater (for Homeowners Associations and Property Owners)
  
  
  
  

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