The contract involved the following:

Phase 1:

• The assessment of the condition and performance of the existing disinfection and pH control systems at 45 No. Water Treatment Plant / Reservoir sites in County Limerick
• Preparation of the disinfection and pH control section of the Drinking Water Safety Plan (DWSP)
• Risk Assessment, jar testing of the existing coagulants and pH adjustment systems
• THMFP analysis and treated water pH correction systems, where required.
• Identification of any deficiencies and design of the required upgrade works in accordance with the Irish Water Design Specification for Disinfection, the Irish Water Design Specification for Treated Water pH / Alkalinity Adjustment and the Irish Water RAM Policies
• Review of any existing pre-treatment process systems and preparation of a short report included as part of the Site Assessment Report.

Phase 2:

• Detail design, provision and installation of the required items including chemical bulk storage tanks, chemical day tanks, chemical make-up tanks, dosing pumps, UV disinfection systems, instrumentation and control equipment and electrical works
• Update of the DWSP Risk Assessment and post-completion verification of the upgraded system compliance with the Drinking Water Regulations, the Irish Water Design Specification for Disinfection and the Irish Water Design Specification for Treated Water pH / Alkalinity Adjustment, and the Irish Water RAM Policies.

Client

Irish Water