Wessex Water Rainwater Drainage Allowance

Prove that all rainwater from your roof goes to soakaways and all runoff from your garden, drive, patio or yard soaks into the ground, and get an allowance off your sewerage charges.

• All rainfall from your roof or shared roof drains into a soakaway at the front and rear of the property
• All rainfall from your garden, drive, patio or yard runs off into the ground
• Claims fail if you only use a water butt with no soakaways
• Claims fail if roof water runs indirectly to a sewer, for example across a pavement, driveway or hard-paved area
• No allowance for partial drainage where some rainwater still enters the sewer

1. 1Check your bill to confirm Wessex Water provides your sewerage services
2. 2Check you are not already receiving the allowance (shown as Standing Charge with Rainwater Allowance or Reduced - Rainwater Drainage Allowance)
3. 3Complete the online rainwater drainage allowance form (a PDF application form is also available)

None; backdated by six years, to when you became responsible for charges, or to when the property was disconnected from the sewer for surface water, whichever is most recent.

• https://www.wessexwater.co.uk/your-wastewater/rainwater-drainage-allowance (official page)
• https://www.wessexwater.co.uk/your-wastewater/managing-rainwater-runoff

Last checked October 22, 2026. See something out of date? Tell us.

Sow is not affiliated with any of these agencies or utilities. Amounts and rules change, often at the start of a fiscal year, so confirm the details on the official page before you start a project. How we research these programs