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Services for developers
and housebuilders

Whether you’re planning a small extension to your property or a large scale development we’re here to help.

What's New?

04/12/18: New Connections Applications - Ongoing Delays
NI Water aim to reply to all new connection applications within 14 days for water and 21 days for sewerage. However due to an unprecedented increase in the number of new connection applications which have been received over the last number of months customers may experience some unintentional delay.

NI Water have engaged additional resources to deal with the resultant backlog and will aim to respond to your application as soon as possible.

NI Water apologises for any inconvenience this may cause and should you wish to talk to us about your application please call our contact centre on 03457440088.

15/10/18: Development related queries should be emailed to developerservices[AT]niwater[DOT]com or posted to NI Water, Developer Services Co-ordination Team, Ballykeel Office, 188 Larne Road, Ballymena, BT42 3HA. They should not be posted to Westland House, Belfast as all of the Devevelopment related post needs logged by DSCT Ballykeel and this facility is not available at Westland House.

31/09/18: Revised Watermain Requisition Internal and External to site Guidance Notes, WRI-A076 application form and WInst have been uploaded. The watermain layout will be forwarded to the applicant following the successful upload of the proposed site layout to our GIS, HOWEVER NO watermains will be laid on site without an associated authorised Article 161 Agreement. Please see uploaded documents for further information.

21/06/18: Stand pipe rental – From the 25th June 2018 we are temporarily suspending the delivery of stand pipes. Anyone renting a stand pipe will be required to collect the stand pipe from NIW, Ballykeel Office, 188 Larne Road Link, Ballymena, BT42 3HA.

30/03/18: Developer Services Guidance and Application Forms updated where applicable. Please ensure you are completing the current application form in accordance with the relevant guidance prior to submitting to avoid delays if the application form is out of date. Not all Guidance and Application Forms have been updated.

30/03/18: If you wish to request a site visit to locate / trace Northern Ireland Water infrastructure or to request, disconnections or shut downs for watermains, please direct your query / request to Waterline[AT]niwater[DOT]com or one of the other contacts for Northern Ireland Water.

23/03/18: Developer Services Summary Scheme of Charges 18/19 and NIW Scheme of Charges 18/19 uploaded.

01/03/18: PLEASE NOTE that from 1 April 2018 NI Water will NOT return the Article 76 water mains approval unless the outstanding Article 161 Agreement for the same development has been returned to Developer Services (where applicable)

25/01/18: Updated guidance on the consideration of Geocellular SuDS structures uploaded.G uidance for the Submission /Appraisal / Adoption of Geocellular SuDS Structures has been uploaded in the Sewers section (inclusive of a list of key information that must be provided to allow for their assessment)


Whether you want to install a new water connection or are planning to build near a watermain, we can help you every step of the way. Our forms contain all the information needed to obtain a water supply to a property or development. Each type of activity contains the application form and guidance notes.

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This contains all the information needed to obtain a consent to build over a public sewer, to connect to a public sewer, requisition a public sewer or divert a public sewer for your property or development.

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Our charges and fees

Details of all the relevant fees relating to the applications for Development Services. Our charges for pre development enquiries, water connections, sewerage (wastewater) connections, and infrastructure changes can be found here.

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