Storm water runoff is either rain or snowmelt that flows over the ground. As this storm water flows over ground, it can pick up chemicals, debris, dirt, and other pollutants that enter the storm sewer system. And if this water can't be absorbed—like when it runs over surfaces like streets, sidewalks, and driveways—it all flows into our sewer systems and are discharged untreated into local streams and waterways. These are the same bodies of water that we use for drinking, fishing, and recreation.

Here's why this matters to you:

  • Increased volumes of storm water entering streams can lead to erosion of stream and lake banks. This in turn results in large amounts of sediments entering our waterways. A higher volume of water entering our water bodies also leads to more flooding.
  • Sediments cloud water, making it difficult for aquatic plants and animals to survive.
  • Excess nutrients, often a result of fertilizer runoff from our lawns, cause algal blooms. When algae die and decompose, the process removes oxygen from the water. Fish and aquatic organisms cannot live in water with low oxygen levels.
  • Debris and trash that is left on streets, sidewalks and parking lots is washed into our water bodies degrading them aesthetically and harming wildlife that use the water as a home.
  • Pollution from storm water degrades streams and waterways used for drinking water. This can affect public health and lead to increased costs to treat the water.

Here's what you can do to be part of the solution:

  • Storm Drains: Never dump anything down a storm drain especially used motor oil or antifreeze. Dispose of these properly at a local service station or approved recycling center. Encourage your community to stencil storm drains with "No Dumping, Drains to Creek" so others will know that everything that enters the storm sewer system also enters their local creeks.
  • Pet Waste: Pet waste can be a major source of excess nutrients and bacteria to local waterbodies. It is important to always pick up after your pet and dispose of the waste properly. When pet waste is left on the ground it increases public health risks.
  • Auto Care: Washing your car at home on the driveway or the street can send detergents and other contaminants through the storm sewer system. It is best to wash your car at a commercial car wash where they treat and recycle the wastewater. If you do wash your car at home, do so in your yard so the water infiltrates into the ground. Also, repair all car leaks. Fluid leaking from a car onto a paved surface is washed into the storm sewer system when it rains.

Residential Landscaping:

  • Downspouts: Direct all downspouts away from pervious surfaces and onto lawns. Rain barrels can be used to collect the rainwater from downspouts. This water can be used later on the lawn and garden.
  • Lawn Care: Fertilizers and Pesticides should be used sparingly. When applied in excess, these chemicals are washed off by rainwater and enter the local storm sewer system. Additionally, it is important not to sweep yard waste and leaves into the street. These add extra nutrients to streams.
  • Rain Gardens or Grassy Swales: These specially designed gardens can be planted with native vegetation to provide an area for rainwater to collect and soak into the ground. Stormwater from rooftop drains and pavement areas can be directed to these vegetated areas.

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