Why does water need to be disinfected?

The protection of public health is the top priority for Irish Water. Disinfection is an important part of the water treatment process. Chlorine is the most commonly used disinfectant in water treatment in Ireland. It is added at the water treatment plant and for larger networks may require boosting at key locations including reservoirs and pumping stations to ensure the correct levels of chlorine are maintained throughout the entire network.

What are the benefits of this programme?

As part of this programme over €65 million euro will be invested in the upgrade and standardisation of disinfection systems currently installed in over 859 public drinking water treatment plants.

The National Disinfection Programme will:

  • Improve drinking water quality
  • Ensure compliance with current Drinking Water Quality Regulations
  • Remove supplies from the EPA's Remedial Action List
  • Reduce the risk of Boil Water Notices or THM formation
  • Provide improved control of the systems

What is involved as part of this programme?

The Disinfection Programme will be carried out in two phases:

Phase 1: Water Treatment Plant Assessment

This stage involves the assessment of the condition and performance of the existing disinfection systems at water treatment plants across the country. This will determine the works required to ensure that the treatment plant disinfection process meets the specified requirements.

Phase 2: Necessary Upgrade Works

Some of these works may include upgrade of chemical storage and dosing infrastructure, upgrade of ultraviolet (UV) disinfection systems, upgrade of monitoring systems and generation of Critical Process Alarms.

Next steps:

We are currently identifying and planning the appropriate improvements to be carried out at water treatment plants throughout the country to ensure the continued delivery of safe drinking water. To date, we have assessed over 799 sites and completed upgrade works to over 211 sites.

Concerned about the quality of your drinking water? Contact us on Callsave 1850 278 278. Lines open 24 hours a day, 7 days a week.

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