The CRU is the independent economic regulator of Irish Water. Our key role is to protect the interests of customers of Irish Water.

However, the CRU is not the body responsible for monitoring water quality or pollution. The Environmental Protection Agency (EPA) is the national environmental regulator with responsibility for supervising the supply of drinking water by Irish Water and the authorisation of discharges from Irish Water’s waste water treatment plants. This means that the EPA is in charge of enforcing drinking water quality regulations and audits Irish Water in relation to the production of drinking water. The EPA also regulates urban wastewater treatment plants and inspects domestic wastewater treatment systems.

If you have a query or complaint about the quality of your drinking water or about waste water works, you should contact Irish Water directly. If you are not satisfied with the response you receive or if the problem persists, please contact the EPA. The EPA will then investigate the issue and resolve it where possible. It is important to note that the EPA will not become involved in investigating an issue that should be resolved by Irish Water, until Irish Water has been given an opportunity to investigate and resolve the issue.


For more information on how to make a complaint about water quality or waste water works, please visit the EPA website. In addition their website has a specific section for people who want to make a complaint, so if you would like to do so please visit their Make a Complaint About Water Quality page.


The EPA can also be contacted by the following means:

Post: Environmental Protection Agency, PO Box 3000, Johnstown Castle Estate, Wexford

Telephone: 1890 278 278  or  +353 1 707 2828 from an international destination