Drinking Water Quality in Public Supplies 2020

This report is an overview of the quality of drinking water in public water supplies and public group schemes during 2020.

It is based on the assessment of monitoring results reported to the EPA by Irish Water and local authorities, and on the EPA’s enforcement activities

Summary of key actions recommended for Irish Water

• Complete upgrades to resolve issues with the drinking water supplies on the RAL, without further delays, to ensure risks to drinking water quality are addressed.
• Progress the assessments of disinfection systems, including rechecking of the chlorine contact times, to ensure drinking water is adequately disinfected and free from bacteria. Critical alarms and monitors must be functioning at all times.
• Substantially progress drinking water safety plan assessments to identify risks at drinking water supplies to safeguard the long-term security of water supplies and mitigate the risk.
• Expedite lead connection replacements. The Department of Housing, Planning and Local Government needs to publish the progress report on the national lead strategy.

At the end of 2020, 46 supplies were on the RAL.

Supplies on RAL for inadequate treatment for protozoa or with protozoa failures

Supplies on RAL for THM or with THM failures

Supplies on RAL for pesticides or with pesticides failures

Supplies with notices in place in 2020 and their duration

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