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Water, sewerage and trade effluent charges

Unmeasured water and sewerage charges

Unmeasured charges for water and sewerage consist of two elements:

  • a standing charge applied to all unmeasured properties; and
  • a variable charge, based on the property valuation. The property valuation is the Net Annual Valuation assigned to the premises by Land and Property Services. Click here to visit website 

Our Unmeasured Charges for 2024/25 are shown in the table below:

Unmeasured Water

Unmeasured Sewerage

Standing Charge

£39.88

£55.52

Variable Charge per each £1,000 Net Annual Value

£15.31

£20.90

Charge Cap

£600

£645

Standard Rated and Unrated Charges

Where customers occupy a rated property, which is used for non-domestic purposes but where metering is either not reasonably practical, or involves undue expense to the customer, and the customer has not previously refused the installation of a water meter, NIW will offer an alternative standard rated property charge. This charge will comprise of a standing charge element only.

Where an unrated property is using water for non-domestic purposes and metering is not possible, NIW will apply a standard unrated property charge. This charge will comprise of two elements: a standing charge and a set volumetric charge.

Our Standard Rated and Unrated Charges for 2024/25 are shown in the following table:-

Standard Rated Charge

Water

Sewerage

Standing Charge (£)

79.76

111.04


Standard Unrated Charges

Water

Sewerage

Standing Charge (£)

79.76

111.04

Set Volumetric Charge (£)

175.90

287.34


Unmeasured and Standard charges are billed once per year for services to be used during the coming year with payment due within 28 days unless agreed otherwise.

For full information on non-domestic charges please read our Scheme of Charges 2024/25.


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