Impacts of StormwaterPollutants

• Toxicity

  • stormwater kills test organisms 8-10 days

• Sediment

  • smothering habitats
  • adsorbed pollutants
  • lake/reservoir storage

• Oil and Grease

• Algal Blooms

  • fish kills
  • odor and taste problems
  • human health

• Bacteria

  • pathogens
  • fishable/swimmable

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Urban stormwater runoff can carry many harmful pollutants to our surface waters. Some of the major pollutants and the associated impacts are shown in this slide.