Mayo County Council logo

Services: Water Services

Panoramic View of Achill Sound Waste Water Treatment Plant

Irish Water Customer Contact Centre Number 1850 278 278

Irish Water is the new national water utility and is now responsible for managing the delivery of water services to homes and businesses in Ireland. For further information or to report an issue with:

  • Water supply
  • Water quality
  • Wastewater
  • New Connections to Water & Wastewater

Please contact Irish Water:

Web: Twitter: @IrishWater Telephone: 1850 278 278 (LoCall) (or) 01 7072828 (Alternative for those on fixed phone tariff)

Minicom: 1890 378 378 (For hearing impaired customers with minicom equipment)

Postal Address:

Irish Water, PO Box 860, South City Delivery Office, Cork City

For Irish Water's supply and service updates click here.

These are also available on the Irish Water Customer Care Account here @iwcare

Waste Water Discharge Licences

Under the Wastewater Discharge (Authorisation) Regulations 2007-2010, Mayo County Council must apply to the Environmental Protection Agency (EPA) for licences and certificates to operate its wastewater treatment plants.

Details of the Waste Water Discharge Licences /Certificates of Authorisation (WWDA) and the licences/certificates that have been issued are available on the EPA website

The Domestic Lead Remediation (Financial Assistance) Regulations 2016 (S.I. 56 of 2016) were signed into law on 5th Feb 2016 and provide for a means tested grant to be paid in certain circumstances where lead service pipes are found at domestic premises.

The explanatory memorandum for the scheme and the application form can be accessed below;

The Irish Water Customer Opt-In Lead Pipe Replacement Scheme

Irish Water has introduced a Customer Opt-In Lead Pipe Replacement Scheme as part of its draft Lead in Drinking Water Mitigation Plan. As part of this scheme Irish Water commit to replacement of the public side lead service when the customer has replaced the private side lead service subject to certain criteria. For further information go to Irish Water.

Non-Domestic Billing

Billing, Payment and Customer Service please contact Irish Water at:



Postal Address: Irish Water, P.O. Box 448, South City Delivery Office, Cork City.

Telephone: 1850 778 778 or + 353707 2827 (9am-5.30pm, Mon-Fri)

Water supply and emergencies

Telephone: 1850 278 278 or +353 1 707 2828 (24 hours a day, 7days a week)

Some of this information is not currently available in English. To view this information it its entirety in Irish, please click the “Irish” tab at the top of the page.

Online Services

Can't find what you need?

Report issues with potholes, paths, drainage/flooding, public lighting, illegal dumping and other issues online via the website.

  More Mayo County Council and Local Government Websites