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Do you know the difference between Stormwater and Wastewater?

Stormwater runoff, sometimes called storm sewer is..

  • rainfall that does not soak into the ground, but instead flows over the land into these surface waters.
  • important to replenish our water supply, but can also harm our watersheds if pollutants are collected along the way.

  • naturally occuring, but as development and the amount of impervious surface such as rooftops, roads and parking lots increase in a watershed, the natural capacity of the soil and vegetation to filter and take up rainfall decreases, and more rainfall becomes stormwater runoff.

Stormwater IS NOT …

  • going to the Wastewater treatment plant.


Wastewater, sometimes called sewage is…

  • water that has been used by homes, industry and business that must be treated before it is released back into the environment.
  • is either transported by a sewer system, called a sanitary sewer to a wastewater treatment plant, or it is treated onsite within a self-contained septic system.

Wastewater is NOT…

  • stormwater runnoff .
  • returned to the environment without treatment.


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