Apply to reduce your wastewater bill

Sometimes, there’s a difference between the amount of water you use and the amount of wastewater that returns to our sewer system. 

We’ve built this into our charges already, which is why we don’t charge you for 10% of the wastewater you use.

If you can prove that more than 10% of the water you use doesn’t return to our sewers for treatment, you can apply to reduce the cost of your bill even further.

Often, if more than 10% of the water you use isn’t returning to our sewer, it’s because you’re:

  • Irrigating your garden: Using a large amount of water to look after lawns, crops or plants
  • Maintaining a swimming pool/pond: Losing water through evaporation
  • Draining water to a private watercourse or soakaway: Diverting some of the water you use away from the public sewer

You’ll qualify for a reduced wastewater bill if you:

  • Are a named customer on the account
  • Have a water meter and at least 12 months of meter readings 
  • Can show that more than 10% of the water we supply to your property doesn’t flow back into the public sewer

To see how much you could save if we reduce the cost of your wastewater bill, find out how we calculate your charges now.

To complete this form, you’ll need your:

  • Account number (printed at the top of your bill)
  • Full name, contact number, email address and account address
  • Water meter details
  • Supporting information including a calculation of the value of any water that is not returned to our sewer using the leaflets below:

Our charges 2020-2021

Our charges 2019-2020

If you apply to reduce the cost of your wastewater bill, we’ll get back to you within six working days. If you have more than one property, please use a new form each time you apply.

Apply to reduce your wastewater bill

If you would prefer to download a form: