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Businesses in Northern Ireland pay water and sewerage charges directly to Northern Ireland Water (NI Water). These charges depend on whether your business has a water meter or not:

• Metered charges are based on the actual water your business uses.
• Unmetered charges are based on the rateable value of your property.

NI Water publishes the tariffs and allowances annually.

Trade effluent charges

If your business produces trade effluent, ie, wastewater other than domestic sewage, you must get permission from NI Water. Additional charges may apply based on the volume and strength of this wastewater.

By reducing the amount of water that your business uses, you can lower your water, sewerage, and trade effluent bills. You will also help reduce the impact that your business has on the environment.

This guide provides information on the water charges for businesses, sewerage charges for businesses and trade effluent charges. There is also guidance on how to understand your water and wastewater bills and how businesses can reduce water, sewerage, and trade effluent costs.