Plan in place to resolve issue permanently

We can confirm that the Kiltegan Public Water Supply, which is currently subject to a Do Not Consume Notice, has been added to the Environmental Protection Agency’s (EPA) Remedial Action List (RAL). The Do Not Consume Notice remains in place due to elevated nitrate levels. To address this, a plan has been put in place to drill a new borehole to provide a new water source that will resolve this issue permanently. This is scheduled to be completed in early 2019. We remind customers that a Do Not Consume Notice remains in place on the Kiltegan PWS until further notice. 

Kiltegan water supply added to RAL

The EPA’s RAL is a list of all the public water supplies that are in need of investment and have an approved action plan, and is updated every three months. The Kiltegan Water Supply Scheme has been added to the RAL. With the exception of the Do Not Consume Notice in place for customers on the Kiltegan Water Supply Scheme, it is safe to consume water from all other supplies in Wicklow which are on the RAL. We are working in partnership with Wicklow County Council to address the issues affecting water supplies, which will help to facilitate the removal of these water supplies from the RAL, subject to approval of the EPA.

Work being undertaken

The Aughrim/Annacurra public water supply is on the EPA’s Remedial Action List due to a risk of THMs in the drinking water supply. THMs are chemical compounds which can form over time when natural organic matter such as the tiny remaining particles of twigs and leaves, react with added chlorine. The addition of chlorine is necessary to adequately disinfect water supplies in order to make the water safe to drink. To address the risk of THMs on the Aughrim Annacurra supply Irish Water is investigating the potential to introduce a new groundwater source as well as installing new treatment at the Aughrim water treatment plant. We plan to have these works completed by the end of 2021.

The Avoca/Ballinclash public water supply scheme is also on the EPAs Remedial Action List due to a risk of THMs. To address this, we are upgrading the Avoca water treatment plant. These works are scheduled to be complete by mid-2019.

Areas affected

Enniskerry public supply; Wicklow Regional public supply; Bray; Greystones (which includes Windgates & Templecarrig); Kilmacanogue and Newtown Newcastle (which includes Kilcoole). In order to address this THM risk, we are making a significant investment in the Vartry Water Supply Scheme. This will ensure a safe and sustainable water supply for the north Wicklow and south Dublin areas, including these 6 water supplies. A new 4km pipeline, replacing the Callowhill Tunnel, has been completed. Works to upgrade to the water treatment plant on the site are currently underway. We plan to have this project completed by early 2021.

Improvements made but work still ongoing

Speaking about the RAL and the ongoing work in Wicklow, Andrew Boylan, Regional Compliance Specialist for the Eastern and Midlands Region with Irish Water said, “The publication of the latest RAL by the EPA confirms that whilst improvements have been made, the scale of the challenge faced by Irish Water in ensuring the delivery of clean and wholesome water to the people of County Wicklow and indeed throughout the country remains. As a single national utility Irish Water has been able to conduct a comprehensive evaluation of the performance of Ireland’s drinking water treatment plants and focus investment where the risk to our customers is highest.” 

“Nationally, Irish Water has adopted a prioritised programme of works which will require an investment of €2 billion by 2021.” Find out more on our Projects & Plans page.



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