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Manage the rain on your property

Keeping the rain that falls on your property out of the combined sewer system reduces the chance of overflows into area waterways. It can also help property owners control flooding in their own yards or businesses.

Disconnect downspouts

In some older Seattle neighborhoods, stormwater from roof drain downspouts and foundation drains flows into sewers. Homeowners can disconnect roof drain downspouts, yard drains, and sump pumps from the sewer system and redirect them to a separate stormwater system.

Install a rain garden, cistern, or rain barrel

Disconnected downspouts can be directed to a rain garden, rain barrel, or cistern. In some neighborhoods, homeowners are eligible for a rebate that can cover up to 100 percent of the cost of a professionally designed and built rain garden or cistern through the RainWise program.

Repair leaky side sewers

Groundwater seeps into sewer pipes through holes, cracks, and joint failures in pipes. Repairing your leaky side sewer will keep water out of the sewer system and reduce the chance of overflows. These repairs can use trenchless technology, such as pipe bursting, which has fewer impacts to existing landscaping. 

Prevent pollution

When residents Don’t Flush Trouble, they help keep trash from entering the waterways during an overflow. You can also help keep pollutants out of our streams, lakes, and Puget Sound:

  • Don’t use pesticides
  • Fertilize moderately
  • Clean up pet waste
  • Keep soap, cleaners and paints out of storm drains
  • Fix oil and fluid leaks in cars

Janice Johnson
CSO Control Program