Salt Lake County, Salt Lake City and Utah Department of Transportation have been monitoring stormwater quality since 1992. In 2000, Salt Lake County published a report titled "Stormwater Quality Data Technical Report" that summarizes 8 years of data.

The report examined the amount of pollutants from different land uses (residential, transportation, and commercial/ industrial). Because such a large portion of the Salt Lake valley is residential, the residential areas were found to contribute more pollutants than either transportation or commercial/ industrial.

The graphs below show the results.

How does Salt Lake valley compare
to other municipalities?

Watch the 2005 Public Service Announcement (1.3mb wmv)

Watch the 2004 Public Service Announcement (575k wmv)