Northern Ireland Water

Contact details for Northern Ireland Water, the sole provider of water and sewerage services in Northern Ireland

PO Box 1026
Belfast
BT1 9DJ
Phone: Waterline - 0345 744 0088 (24 hours, 7 days a week) / Leakline - 0800 028 2011 / Billing queries - 0845 877 0030 (Lines open from 8.00 am to 8.00 pm, Monday to Friday, Saturday from 8.00 am to 6.00 pm and Sunday from 12.00 pm to 6.00 pm)
Text number: Typetalk - 0800 0515 446 (for deaf and hard of hearing users only)

For Customer billing issues, you can also email customer.billing@niwater.com

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