1. CASE STUDY NENAGH REGIONAL WATER SUPPLY PLANT

2. PUBLIC WATER SUPPLIES PERSPECTIVE BOTTLED WATER USAGE in IRELAND BOTTLED WATER USAGE in IRELAND = 0.3 million Litres / day = 0.3 million Litres / day NENAGH R.W.S.P. PRODUCTION NENAGH R.W.S.P. PRODUCTION = 7.5 million Litres / day = 7.5 million Litres / day NORTH TIPPERARY Co. Co. PRODUCTION NORTH TIPPERARY Co. Co. PRODUCTION = 26 million Litres / day = 26 million Litres / day

3. PUBLIC WATER V’s BOTTLED WATER

4. SUPPLY √ TREATMENT X

5. COMMISSIONED - 1997 COMMISSIONED - 1997 1. ISO9001 - 1998 2. HYGIENE MARK - 1999 3. Q – MARK - 2000 4. ISO14001 - 2003 5. E.T.P. - 2005 NENAGH R.W.S.P.

6. Nenagh Regional Water Supply Plant

7. PROCESS CHEMICALS SPECIFICATION (Food Grade, Conc., Tolerance) SPECIFICATION (Food Grade, Conc., Tolerance) CERTIFICATE OF ANALYSIS CERTIFICATE OF ANALYSIS CHEMICALS FOLDER CHEMICALS FOLDER SUMMARY RECORD SUMMARY RECORD TRACEABILITY TRACEABILITY

8. Source Water

9. Coagulation & Flocculation

10. PROCESS CONTROL CHEMICAL DOSING - 7 CHEMICALS - 7 CHEMICALS - VERIFICATION - DAILY - DAILY

12. Aluminium Sulphate (8%) TARGET TARGETDOSE 5 % TOLERANCE 5 % TOLERANCE ALLOWABLE RANGE 80 804 76 - 84 100 1005 95 - 105 120 1206 114 - 126 140 1407 133 - 147 160 1608 152 - 168 180 1809 171 - 189

14. LOG OF CHANGES TO DOSE RATES DATE (%) S. ACID (ppm) ALUM. (ppm) POLY. (ppm) CARBON (ppm) CL2 (ppm) F REASON APPROVED BY 3 FEB -170 - - - - ELEVATED SOURCE COLOUR MB 10 MAY -- - 10 2.9 - SUMMER DOSING SEASON MB 1 JUNE 70120 - 15 - - LOWER SOURCE COLOUR - TASTE JM 5 JULY 82100 - - - - LOWER SOURCE COLOUR MB 20 JULY - - -253.1 - INCREASE FREE RES CL2 MB 2 SEPT - - - -3.3 - INCREASE FREE RES CL2 MB

15. ENHANCED COAGULATION

16. DOSING - REFERENCE CHART LAKE COLOUR ALUM DOSE CARBON DOSE COAG. PH PHSETTLEDTURB.CL2DOSE FINAL W. FREE CL2 THM JAN - FEB 6218006.780.592.92.265 MAR - APR 5517506.800.482.82.155 MAY - JUNE 42135156.340.383.02.173 JULY - AUG 42130256.300.403.12.280 SEPT - OCT 51150256.240.573.32.390 NOV - DEC 5816506.840.553.02.355

19. Carbon Dosing

20. CLARIFICATION & FILTRATION CLARIFIERS - 3 x 500 M3 Tanks - 3 x 500 M3 Tanks - Upward Flow Rate (Max.) = 1.8 - Upward Flow Rate (Max.) = 1.8 M/Hr. FILTERS - 3 x R.G. Sand Filters - 3 x R.G. Sand Filters - Filtration Rate (Max.) = 3.9 M/Hr. - Filtration Rate (Max.) = 3.9 M/Hr.

21. TURBIDITY MONOTORING

22. POST - FILTRATION CHLORINE DIOXIDE - Taste CHLORINE DIOXIDE - Taste CHLORINATION - T.H.M. CHLORINATION - T.H.M. FLUORIDATION FLUORIDATION PHOSPHORIC ACID - Enhanced Coagulation PHOSPHORIC ACID - Enhanced Coagulation

23. CHLORINE DIOXIDE

26. CHLORINE CONTROL

27. INSPECTION & TESTING SAMPLING PLAN SAMPLING PLAN - SOURCE WATER - SOURCE WATER - SETTLED WATER - SETTLED WATER - FILTERED WATER - FILTERED WATER - FINAL WATER - FINAL WATER

29. Final Water Cryptosporidium Monitoring

31. Continual Improvement Key Performance Indicators (K.P.I.) Key Performance Indicators (K.P.I.) - Process - Process - Quality - Quality - Cost - Cost - Environmental - Environmental - External Audit Results ( eg. H-Mark Score) - External Audit Results ( eg. H-Mark Score)

35. Issues Issues Process Chemicals - data Process Chemicals - data CAR’s - review CAR’s - review Paperwork - volume Paperwork - volume Design - practical Design - practical

36. END