Redirect downspouts

A simple action with big impact

Disconnecting your downspout from a sewer pipe and directing the water onto a grassy area or garden is an easy change that can greatly benefit the environment.

The benefits of redirecting downspouts

Traditionally, downspouts direct rainwater onto hard surfaces like pavement. As this water flows across streets and driveways, it picks up pollutants such as motor oil, lawn chemicals, salt, pet waste, litter, and eroded soil before draining untreated into nearby streams.

Instead of sending polluted runoff into street storm sewers, redirecting downspouts to lawns, gardens, rain gardens, or rain barrels allows water to soak into the ground. This natural infiltration filters pollutants, supports plant growth, reduces erosion, and helps lower the risk of flooding and storm sewer overflows.

Tools needed

  • Hacksaw
  • Drill
  • Pliers

Supplies

  • Sheet metal screws
  • Elbow
  • Extension
  • Standpipe cap

How to redirect your downspout

Step 1

Cut existing downspout ~9 inches above sewer standpipe with hacksaw.

Step 2

Cap the sewer standpipe.

Step 3

Attach elbow to cut end and crimp downspout with pliers to fit.

Step 4

Pre-drill holes in both the cut end and elbow piece. Attach with screws.

Step 5

Attach pipe extension and place splash block or channel to guide and slow water to at least 5 feet away from the building foundation.