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Sewage discharge allowance

We calculate 90% of the water used by most households will flow back into the sewers for recycling. A 10% allowance is made for things like watering the garden.

You could increase this allowance if you can show us that less water is being released back into the public sewers. For example, if you have

  • a pond
  • a swimming pool
  • a spa or hot tub
  • a grey water harvesting system

that isn't connected to the public drainage system.

Lawn and seasonal watering allowances can also be requested. 

For more information or request an application form, please call us on 03457 919 155.

We’re one of the few water companies who automatically give a 10% sewerage allowance on all measured accounts. Most other companies base their sewerage charges on 100% of the water recorded by the meter.


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Registered in England No. 2366656. Registered Office: Lancaster House, Lancaster Way, Ermine Business Park, Huntingdon, Cambridgeshire. PE29 6XU