Water Treatment Plants Water Quality Report - 1 July June 2015

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1 Water Treatment Plants Water Quality Report - 1 July June 2015 Overview This report shows compliance only for the parameters that have Maximum Acceptable Values () set out in the Drinking-water Standards for New Zealand The is the concentration of a microbial or chemical constituent in drinking-water below which the presence of the determinand does not result in any significant risk to the health of the consumer over a lifetime consumption of that water. The s have been based on the latest WHO guideline values. The guideline value () is the value of an aesthetic constituent in drinking-water that, if exceeded, may render the water unattractive to consumers due to colour or odour. All test results shown in the report as ND (not detected) are lower than the laboratory's detection limits for the tested parameters. Cryptosporidium and Giardia tests are conducted only at Ardmore and Waikato WTPs as part of the Bulk Water Agreement with Veolia Water. Cryptosporidium and Giardia test results are only reported when they met the analysis criteria. Ardmore WTP A Block Treated Water Acidic Herbicides ,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 13 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 13 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 13 ND ND ND Bentazone mg/l 13 ND ND ND Dichlorprop mg/l 13 ND ND ND MCPA mg/l 13 ND ND ND Mecoprop mg/l 13 ND ND ND Picloram mg/l 13 ND ND ND Triclopyr mg/l 13 ND ND ND Chemical and Physical 2005 UV absorbance Abs units Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 13 ND ND ND Bromide mg/l ND Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 13 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 13 ND ND ND Colour Hazen 53 5 ND ND 5 10 Conductivity ms/cm Cyanide mg/l 5 ND ND ND Fluoride mg/l Iodide mg/l ND Iron (Total) mg/l Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l ND Total Hardness mg/l Total Organic Carbon (TOC) mg/l Turbidity NTU ND Microbiology s 2005 Cryptosporidium cysts/oocysts (Treated Water) cysts/100 L 4 ND ND ND 1 <1 Giardia cysts/oocysts (Treated Water) cysts/100ml 5 ND ND ND 1 <1 E.coli MPN/100mL 365 ND ND ND 1 <1

2 Nutrients Ammonia mg/l N ND Dissolved Reactive Phosphorus mg/l ND Nitrate mg/l as NO Nitrite Nitrogen mg/l ND TKN (Total Kjeldahl Nitrogen) mg/l N ND Total Phosphorus mg/l ND Plasticizers bis (2-ethylhexyl) adipate µg/l 13 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 13 ND ND ND Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 13 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 13 ND ND ND Chlordane µg/l 13 ND ND ND Llindane µg/l 13 ND ND ND Heptachlor µg/l 13 ND ND ND 0.01 Heptachlor epoxide µg/l 13 ND ND ND 0.01 Hexachlorobenzene µg/l 13 ND ND ND 0.1 Methoxychlor µg/l 13 ND ND ND Permethrin (cis + trans) µg/l 13 ND ND ND 0.2 DDT + isomers µg/l 13 ND ND ND Procymidone µg/l 13 ND ND ND Organonitrogen Herbicides Alachlor µg/l 13 ND ND ND Atrazine µg/l 13 ND ND ND Metolachlor µg/l 13 ND ND ND Molinate µg/l 13 ND ND ND Pendimethalin µg/l 13 ND ND ND Propanil µg/l 13 ND ND ND 0.1 Simazine µg/l 13 ND ND ND Terbuthilazine µg/l 13 ND ND ND Trifularin µg/l 13 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 13 ND ND ND Diazinon µg/l 13 ND ND ND 0.1 Pirymiphos methyl µg/l 13 ND ND ND Trace Elements Antimony mg/l 13 ND ND ND Arsenic mg/l Barium mg/l Boron mg/l ND Cadmium mg/l 13 ND ND ND Chromium mg/l ND Copper mg/l Lead mg/l ND ND Lithium mg/l ND Mercury mg/l 12 ND ND ND Molybdenum mg/l 13 ND ND ND Nickel mg/l ND Selenium mg/l 13 ND ND ND Zinc mg/l ND

3 Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l ND Chloroform mg/l Dibromochlorometane mg/l THMs Ratio Volatile Organic Compounds 1,1,1-trichloroethane mg/l 13 ND ND ND ,2,3-trichlorobenzene mg/l 13 ND ND ND ,2,4-trichlorobenzene mg/l 13 ND ND ND ,2-dichlorobenzene mg/l 13 ND ND ND ,2-dichloroethane mg/l 13 ND ND ND ,4-dichlorobenzene mg/l 13 ND ND ND Benzene mg/l 13 ND ND ND Carbon tetrachloride mg/l 13 ND ND ND Ethylbenzene mg/l 13 ND ND ND Xylenes (total) mg/l 13 ND ND ND Styrene mg/l 13 ND ND ND Tetrachloroethene mg/l 13 ND ND ND Toluene mg/l 13 ND ND ND ,2-dichloroethene (cis + trans) mg/l 13 ND ND ND Trichloroethene mg/l 13 ND ND ND

4 Ardmore WTP B1 Block Treated Water Acidic Herbicides 2,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 13 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 13 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 13 ND ND ND Bentazone mg/l 13 ND ND ND Dichlorprop mg/l 13 ND ND ND MCPA mg/l 13 ND ND ND Mecoprop mg/l 13 ND ND ND Picloram mg/l 13 ND ND ND Triclopyr mg/l 13 ND ND ND Chemical and Physical UV absorbance Abs units Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 13 ND ND ND Bromide mg/l ND Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 13 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 13 ND ND ND Colour Hazen 53 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 5 ND ND ND Fluoride mg/l Iodide mg/l ND ND Iron (Total) mg/l Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l ND ND 0.20 Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology Cryptosporidium (Treated Water) cysts/100 L 5 ND ND ND 1 <1 Giardia (Treated Water) cysts/100ml 5 ND ND ND 1 <1 E.coli MPN/100mL 365 ND ND ND 1 < Nutrients Ammonia mg/l N ND Dissolved Reactive Phosphorus mg/l ND Nitrate mg/l Nitrite Nitrogen mg/l ND TKN (Total Kjeldahl Nitrogen) mg/l N ND Total Phosphorus mg/l ND

5 Plasticizers bis (2-ethylhexyl) adipate µg/l 13 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 13 ND ND ND Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 13 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 13 ND ND ND Chlordane µg/l 13 ND ND ND Llindane µg/l 13 ND ND ND Heptachlor µg/l 13 ND ND ND 0.01 Heptachlor epoxide µg/l 13 ND ND ND 0.01 Hexachlorobenzene µg/l 13 ND ND ND 0.1 Methoxychlor µg/l 13 ND ND ND Permethrin (cis + trans) µg/l 13 ND ND ND 0.2 DDT + isomers µg/l 13 ND ND ND Procymidone µg/l 13 ND ND ND Organonitrogen Herbicides Alachlor µg/l 13 ND ND ND Atrazine µg/l 13 ND ND ND Metolachlor µg/l 13 ND ND ND Molinate µg/l 13 ND ND ND Pendimethalin µg/l 13 ND ND ND Propanil µg/l 13 ND ND ND 0.1 Simazine µg/l 13 ND ND ND Terbuthilazine µg/l 13 ND ND ND Trifularin µg/l 13 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 13 ND ND ND Diazinon µg/l 13 ND ND ND 0.1 Pirymiphos methyl µg/l 13 ND ND ND Trace Elements Antimony mg/l 13 ND ND ND Arsenic mg/l Barium mg/l Boron mg/l ND Cadmium mg/l 13 ND ND ND Chromium mg/l Copper mg/l ND Lead mg/l ND ND Lithium mg/l ND Mercury mg/l 12 ND ND ND Molybdenum mg/l 13 ND ND ND Nickel mg/l ND ND Selenium mg/l 13 ND ND ND Zinc mg/l ND Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l ND Chloroform mg/l Dibromochlorometane mg/l THMs Ratio

6 Volatile Organic Compounds 1,1,1-trichloroethane mg/l 13 ND ND ND ,2,3-trichlorobenzene mg/l ND ND ,2,4-trichlorobenzene mg/l ND ND ,2-dichlorobenzene mg/l 13 ND ND ND ,2-dichloroethane mg/l 13 ND ND ND ,4-dichlorobenzene mg/l 13 ND ND ND Benzene mg/l 13 ND ND ND Carbon tetrachloride mg/l 13 ND ND ND Ethylbenzene mg/l 13 ND ND ND Xylenes (total) mg/l 13 ND ND ND Styrene mg/l 13 ND ND ND Tetrachloroethene mg/l 13 ND ND ND Toluene mg/l 13 ND ND ND ,2-dichloroethene (cis + trans) mg/l 13 ND ND ND Trichloroethene mg/l 13 ND ND ND

7 Ardmore WTP B2 Block Treated Water Acidic Herbicides 2,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 13 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 13 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 13 ND ND ND Bentazone mg/l 13 ND ND ND Dichlorprop mg/l 13 ND ND ND MCPA mg/l 13 ND ND ND Mecoprop mg/l 13 ND ND ND Picloram mg/l 13 ND ND ND Triclopyr mg/l 13 ND ND ND Chemical and Physical UV absorbance Abs units Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 13 ND ND ND Bromide mg/l ND Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 13 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 13 ND ND ND Colour Hazen 53 5 ND Conductivity ms/cm Cyanide mg/l 5 ND ND ND Fluoride mg/l Iodide mg/l ND ND Iron (Total) mg/l Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l ND Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology Cryptosporidium (Treated Water) cysts/100 L 4 ND ND ND 1 <1 Giardia (Treated Water) cysts/100ml 6 ND ND ND 1 <1 E.coli MPN/100mL 365 ND ND ND 1 < Nutrients Ammonia mg/l N ND Dissolved Reactive Phosphorus mg/l ND Nitrate mg/l Nitrite Nitrogen mg/l ND TKN (Total Kjeldahl Nitrogen) mg/l N 13 ND ND ND 0.1 Total Phosphorus mg/l ND

8 Plasticizers bis (2-ethylhexyl) adipate µg/l 13 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 13 ND ND ND Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 13 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 13 ND ND ND Chlordane µg/l 13 ND ND ND Lindane µg/l 13 ND ND ND Heptachlor µg/l 13 ND ND ND 0.01 Heptachlor epoxide µg/l 13 ND ND ND 0.01 Hexachlorobenzene µg/l 13 ND ND ND 0.1 Methoxychlor µg/l 13 ND ND ND Permethrin (cis + trans) µg/l 13 ND ND ND 0.2 DDT + isomers µg/l 13 ND ND ND Procymidone µg/l 13 ND ND ND Organonitrogen Herbicides Alachlor µg/l 13 ND ND ND Atrazine µg/l 13 ND ND ND Metolachlor µg/l 13 ND ND ND Molinate µg/l 13 ND ND ND Pendimethalin µg/l 13 ND ND ND Propanil µg/l 13 ND ND ND 0.1 Simazine µg/l 13 ND ND ND Terbuthilazine µg/l 13 ND ND ND Trifularin µg/l 13 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 13 ND ND ND Diazinon µg/l 13 ND ND ND 0.1 Pirymiphos methyl µg/l 13 ND ND ND Trace Elements Antimony mg/l 13 ND ND ND Arsenic mg/l ND Barium mg/l Boron mg/l ND Cadmium mg/l 13 ND ND ND Chromium mg/l ND Copper mg/l ND Lead mg/l ND ND Lithium mg/l ND Mercury mg/l 12 ND ND ND Molybdenum mg/l 13 ND ND ND Nickel mg/l ND Selenium mg/l 13 ND ND ND Zinc mg/l ND ND Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l ND Chloroform mg/l Dibromochlorometane mg/l THMs Ratio

9 Volatile Organic Compounds 1,1,1-trichloroethane mg/l 13 ND ND ND ,2,3-trichlorobenzene mg/l 13 ND ND ND ,2,4-trichlorobenzene mg/l 13 ND ND ND ,2-dichlorobenzene mg/l 13 ND ND ND ,2-dichloroethane mg/l 13 ND ND ND ,4-dichlorobenzene mg/l 13 ND ND ND Benzene mg/l 13 ND ND ND Carbon tetrachloride mg/l 13 ND ND ND Ethylbenzene mg/l 13 ND ND ND Xylenes (total) mg/l 13 ND ND ND Styrene mg/l 13 ND ND ND Tetrachloroethene mg/l 13 ND ND ND Toluene mg/l 13 ND ND ND ,2-dichloroethene (cis + trans) mg/l 13 ND ND ND Trichloroethene mg/l 13 ND ND ND

10 Bombay WTP Treated Water Chemical and Physical Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 1 ND ND ND Bromide mg/l Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 1 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 1 ND ND ND Colour Hazen 1 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 1 ND ND ND Iodide mg/l Iron (Total) mg/l 1 ND ND ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l 1 ND ND ND ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l 1 ND ND ND 0.2 Total Dissolved Solids mg/l Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 127 ND ND ND 1 < Nutrients Ammonia mg/l N 1 ND ND ND Dissolved Reactive Phosphorus mg/l 1 ND ND ND Nitrate mg/l as NO Nitrite mg/l 1 ND ND ND TKN (Total Kjeldahl Nitrogen) mg/l N 1 ND ND ND 0.1 Total Phosphorus mg/l 1 ND ND ND Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND

11 Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND Chlordane µg/l 1 ND ND ND Lindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 DDT + isomers µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pendimethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements Antimony mg/l 1 ND ND ND Arsenic mg/l 1 ND ND ND Barium mg/l Boron mg/l Cadmium mg/l 1 ND ND ND Chromium mg/l Copper mg/l Lead mg/l Lithium mg/l Mercury mg/l 1 ND ND ND Molybdenum mg/l 1 ND ND ND Nickel mg/l 1 ND ND ND Selenium mg/l 1 ND ND ND Zinc mg/l Trihalomethanes Bromodichloromethane mg/l ND Bromoform mg/l ND Chloroform mg/l ND Dibromochlorometane mg/l ND THMs Ratio ND ND

12 Volatile Organic Compounds 1,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND Xylenes (total) mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND Tetrachloroethene mg/l 1 ND ND ND Toluene mg/l 1 ND ND ND ,2-dichloroethene (cis + trans) mg/l 1 ND ND ND Trichloroethene mg/l 1 ND ND ND

13 Clarks Beach WTP Treated Water Chemical and Physical Chloride mg/l Chlorine Residual mg/l Conductivity ms/cm Fluoride mg/l Manganese mg/l ph ph Sulphate mg/l Turbidity mg/l Microbiology E.coli MPN/100mL 39 ND ND ND 1 < Trace Elements Boron mg/l Note: Clarks Beach WTP was decomissioned on 3/12/2014. The Clarks Beach community is now supplied by Waikato WTP. 2005

14 Cornwall Road (Waiuku) WTP Treated Water Chemical and Physical Alkalinity (Total) mg/l CaCO Aluminium mg/l 1 ND ND ND Bromate mg/l 1 ND ND ND Bromide mg/l Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 1 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 1 ND ND ND Colour Hazen 1 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 1 ND ND ND Fluoride mg/l Iodide mg/l 1 ND ND ND Iron (Total) mg/l 12 ND ND ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ND ND ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l 1 ND ND ND 0.2 Total Dissolved Solids mg/l Total Hardness mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 122 ND ND ND 1 < Nutrients Ammonia mg/l N 1 ND ND ND Dissolved Reactive Phosphorus mg/l Nitrate mg/l as NO Nitrite mg/l 1 ND ND ND TKN (Total Kjeldahl Nitrogen) mg/l N 1 ND ND ND 0.1 Total Phosphorus mg/l Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND 2 9 Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND Chlordane µg/l 1 ND ND ND Lindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 pp-ddt µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND

15 Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pe0.00imethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements Antimony mg/l 1 ND ND ND Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l 1 ND ND ND Chromium mg/l Copper mg/l Lead mg/l 1 ND ND ND Lithium mg/l Mercury mg/l 1 ND ND ND Molybdenum mg/l 1 ND ND ND Nickel mg/l 1 ND ND ND Selenium mg/l 1 ND ND ND Zinc mg/l 1 ND ND ND Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l Chloroform mg/l Dibromochlorometane mg/l THMs Ratio Volatile Organic Compounds 1,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND m- & p-xylene mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND Tetrachloroethene mg/l 1 ND ND ND Toluene mg/l 1 ND ND ND ,2-dichloroethene (cis + trans) mg/l 1 ND ND ND Trichloroethene mg/l 1 ND ND ND

16 Glenbrook Beach WTP Treated Water Chemical and Physical Chlorine Residual mg/l ph ph Turbidity NTU ND Microbiology E.coli MPN/100mL 55 ND ND ND 1 <1 Note: Glenbrook WTP was decomissioned on 9/12/2014. The Glenbrook community is now supplied by the Waikato WTP 2005 Acidic Herbicides 2,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 4 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 4 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 4 ND ND ND Bentazone mg/l 4 ND ND ND Dichlorprop mg/l 4 ND ND ND MCPA mg/l 4 ND ND ND Mecoprop mg/l 4 ND ND ND Picloram mg/l 4 ND ND ND Triclopyr mg/l 4 ND ND ND Chemical and Physical Alkalinity (Total) mg/l CaCO Aluminium mg/l Calcium mg/l Calcium Hardness mg/l Chlorine Residual mg/l Colour Hazen 12 ND ND ND 5 10 Conductivity ms/cm Fluoride mg/l Iron (Total) mg/l ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l 1 ND ND ND 0.2 Total Dissolved Solids mg/l Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 124 ND ND ND 1 < Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND

17 Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND Chlordane µg/l 1 ND ND ND Lindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 DDT + isomers µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pendimethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements Antimony mg/l 2 ND ND ND Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l 2 ND ND ND Chromium mg/l Copper mg/l Lead mg/l ND Lithium mg/l Mercury mg/l 2 ND ND ND Molybdenum mg/l 2 ND ND ND Nickel mg/l Selenium mg/l 2 ND ND ND Zinc mg/l Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l Chloroform mg/l Dibromochlorometane mg/l THMs Ratio

18 Volatile Organic Compounds 1,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND Xylenes (total) mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND Tetrachloroethene mg/l 1 ND ND ND Toluene mg/l 1 ND ND ND ,2-dichloroethene (cis + trans) mg/l 1 ND ND ND Trichloroethene mg/l 1 ND ND ND

19 Huia WTP Treated Water Acidic Herbicides 2,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 13 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 13 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 13 ND ND ND Bentazone mg/l 13 ND ND ND Dichlorprop mg/l 13 ND ND ND MCPA mg/l 13 ND ND ND Mecoprop mg/l 13 ND ND ND Picloram mg/l 13 ND ND ND Triclopyr mg/l 13 ND ND ND Chemical and Physical UV absorbance Abs units Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 13 ND ND ND Bromide mg/l Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 13 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 13 ND ND ND Colour Hazen 52 5 ND ND 5 10 Conductivity ms/cm Cyanide mg/l 5 ND ND ND Fluoride mg/l Iodide mg/l 4 ND ND ND Iron (Total) mg/l Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l ND Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 365 ND ND ND 1 < Nutrients Ammonia mg/l N ND Dissolved Reactive Phosphorus mg/l ND Nitrate mg/l as NO Nitrite mg/l ND TKN (Total Kjeldahl Nitrogen) mg/l N ND Total Phosphorus mg/l ND Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND

20 Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND Chlordane µg/l 1 ND ND ND Llindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 DDT + isomers µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pendimethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements Antimony mg/l 13 ND ND ND Arsenic mg/l ND Barium mg/l Boron mg/l ND Cadmium mg/l 13 ND ND ND Chromium mg/l ND Copper mg/l Lead mg/l ND ND Lithium mg/l Mercury mg/l 12 ND ND ND Molybdenum mg/l 13 ND ND ND Nickel mg/l ND ND Selenium mg/l 13 ND ND ND Zinc mg/l ND Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l ND Chloroform mg/l Dibromochlorometane mg/l THMs Ratio

21 Volatile Organic Compounds 1,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND Xylenes (total) mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND Tetrachloroethene mg/l 1 ND ND ND Toluene mg/l 1 ND ND ND ,2-dichloroethene (cis + trans) mg/l 1 ND ND ND Trichloroethene mg/l 1 ND ND ND

22 Huia Village WTP Treated Water Chemical and Physical Calcium mg/l Calcium Hardness mg/l Chlorine Residual mg/l Iron (Total) mg/l 1 ND ND ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l 1 ND ND ND ph ph Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 122 ND ND ND 1 < Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l Chloroform mg/l Dibromochlorometane mg/l THMs Ratio

23 Muriwai WTP Treated Water Chemical and Physical Calcium mg/l Calcium Hardness mg/l Chlorine Residual mg/l Iron (Total) mg/l Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l 1 ND ND ND ph ph Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 124 ND ND ND 1 < Trihalomethanes Bromodichloromethane mg/l ND Bromoform mg/l Chloroform mg/l ND Dibromochlorometane mg/l THMs Ratio

24 Onehunga WTP Treated Water Acidic Herbicides 2,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 13 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 13 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 13 ND ND ND Bentazone mg/l 13 ND ND ND Dichlorprop mg/l 13 ND ND ND MCPA mg/l 13 ND ND ND Mecoprop mg/l 13 ND ND ND Picloram mg/l 13 ND ND ND Triclopyr mg/l 13 ND ND ND Chemical and Physical UV absorbance Abs units ND Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 13 ND ND ND Bromide mg/l Calcium mg/l Calcium Hardness mg/l Chlorate mg/l Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 13 ND ND ND Colour Hazen 52 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 5 ND ND ND Fluoride mg/l Iodide mg/l Iron (Total) mg/l ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ND ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l ND ND 0.2 Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 361* ND ND 1 <1 *In 2014/15 four E.coli sampes were not collected from the Onehunga WTP due to the treatment plant being shut down for maintenance purposes. Nutrients Ammonia mg/l N ND Dissolved Reactive Phosphorus mg/l Nitrate mg/l as NO Nitrite mg/l ND TKN (Total Kjeldahl Nitrogen) mg/l N ND Total Phosphorus mg/l Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND

25 Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND Chlordane µg/l 1 ND ND ND Lindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 DDT + isomers µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pendimethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements Antimony mg/l 13 ND ND ND Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l 13 ND ND ND Chromium mg/l Copper mg/l Lead mg/l ND ND Lithium mg/l Mercury mg/l 12 ND ND ND Molybdenum mg/l Nickel mg/l ND Selenium mg/l ND Zinc mg/l ND Trihalomethanes Bromodichloromethane mg/l ND Bromoform mg/l ND Chloroform mg/l ND Dibromochlorometane mg/l ND THMs Ratio ND

26 Volatile Organic Compounds 1,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND Xylenes (total) mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND Tetrachloroethene mg/l 1 ND ND ND Toluene mg/l 1 ND ND ND ,2-dichloroethene (cis + trans) mg/l 1 ND ND ND Trichloroethene mg/l 1 ND ND ND

27 Patumahoe WTP Treated Water Chemical and Physical Chlorine Residual mg/l Conductivity ms/cm Iron (Total) mg/l Manganese mg/l ph ph Turbidity Microbiology E.coli MPN/100mL 44 ND ND ND 1 <1 Note: Patumahoe WTP was decomissioned on 6/12/2014. The Patumahoe community is now supplied by the Waikato WTP. 2005

28 Snells/Algies WTP Treated Water Chemical and Physical Alkalinity (Total) mg/l CaCO Aluminium mg/l 1 ND ND ND Bromate mg/l 1 ND ND ND Bromide mg/l Calcium mg/l Calcium Hardness mg/l Chlorate mg/l 1 ND ND ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 1 ND ND ND Colour Hazen 1 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 1 ND ND ND Fluoride mg/l Iodide mg/l Iron (Total) mg/l ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l 1 ND ND ND 0.2 Total Dissolved Solids mg/l Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 126 ND ND ND 1 < Nutrients 2005 Ammonia mg/l N 1 ND ND ND Dissolved Reactive Phosphorus mg/l Nitrate mg/l as NO Nitrite mg/l 1 ND ND ND TKN (Total Kjeldahl Nitrogen) mg/l N 1 ND ND ND 0.1 Total Phosphorus mg/l Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND

29 Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND gamma-chlordan µg/l 1 ND ND ND 0.01 Lindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 DDT + isomers µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pendimethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus Pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements 2005 Antimony mg/l 1 ND ND ND Arsenic mg/l 1 ND ND ND Barium mg/l 1 ND ND ND Boron mg/l Cadmium mg/l 1 ND ND ND Chromium mg/l Copper mg/l Lead mg/l 1 ND ND ND Lithium mg/l Mercury mg/l 1 ND ND ND Molybdenum mg/l 1 ND ND ND Nickel mg/l 1 ND ND ND Selenium mg/l 1 ND ND ND Zinc mg/l 1 ND ND ND Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l Chloroform mg/l Dibromochlorometane mg/l THMs Ratio

30 Volatile Organic Compounds ,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND Xylene mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND Tetrachloroethene mg/l 1 ND ND ND Toluene mg/l 1 ND ND ND ,2-dichloroethene (cis + trans) mg/l 1 ND ND ND Trichloroethene mg/l 1 ND ND ND

31 Victoria Avenue (Waiuku) WTP Treated Water Chemical and Physical Alkalinity (Total) mg/l CaCO Aluminium mg/l 1 ND ND ND Bromate mg/l 1 ND ND ND Bromide mg/l Calcium mg/l Calcium Hardness mg/l Chlorate mg/l Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 1 ND ND ND Colour Hazen 1 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 1 ND ND ND Iodide mg/l Iron (Total) mg/l ND Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l 1 ND ND ND 0.2 Total Dissolved Solids mg/l Total Hardness mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 123 ND ND ND 1 < Nutrients Ammonia mg/l N Dissolved Reactive Phosphorus mg/l Nitrate mg/l as NO Nitrite mg/l 1 ND ND ND TKN (Total Kjeldahl Nitrogen) mg/l N 1 ND ND ND 0.1 Total Phosphorus mg/l Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND Polycyclic Aromatic Hydrocarbons Benzo(a)pyrene µg/l 1 ND ND ND

32 Semi Volatile Organic Compounds Organochlorine Pesticides Aldrin + Dieldrin µg/l 1 ND ND ND Chlordane µg/l 1 ND ND ND Lindane µg/l 1 ND ND ND Heptachlor µg/l 1 ND ND ND 0.01 Heptachlor epoxide µg/l 1 ND ND ND 0.01 Hexachlorobenzene µg/l 1 ND ND ND 0.1 Methoxychlor µg/l 1 ND ND ND Permethrin (cis + trans) µg/l 1 ND ND ND 0.2 DDT + isomers µg/l 1 ND ND ND Procymidone µg/l 1 ND ND ND Organonitrogen Herbicides Alachlor µg/l 1 ND ND ND Atrazine µg/l 1 ND ND ND Metolachlor µg/l 1 ND ND ND Molinate µg/l 1 ND ND ND Pendimethalin µg/l 1 ND ND ND Propanil µg/l 1 ND ND ND 0.1 Simazine µg/l 1 ND ND ND Terbuthilazine µg/l 1 ND ND ND Trifularin µg/l 1 ND ND ND Organophosphorus pesticides Chlorpyriphos µg/l 1 ND ND ND Diazinon µg/l 1 ND ND ND 0.1 Pirymiphos methyl µg/l 1 ND ND ND Trace Elements Antimony mg/l 1 ND ND ND Arsenic mg/l Barium mg/l Boron mg/l Cadmium mg/l 1 ND ND ND Chromium mg/l Copper mg/l 1 ND ND ND Lead mg/l 1 ND ND ND Lithium mg/l Mercury mg/l 1 ND ND ND Molybdenum mg/l Nickel mg/l Selenium mg/l 1 ND ND ND Zinc mg/l Trihalomethanes Bromodichloromethane mg/l Bromoform mg/l Chloroform mg/l Dibromochlorometane mg/l THMs Ratio Volatile Organic Compounds 1,1,1-trichloroethane mg/l 1 ND ND ND ,2,3-trichlorobenzene mg/l 1 ND ND ND ,2,4-trichlorobenzene mg/l 1 ND ND ND ,2-dichlorobenzene mg/l 1 ND ND ND ,2-dichloroethane mg/l 1 ND ND ND ,4-dichlorobenzene mg/l 1 ND ND ND Benzene mg/l 1 ND ND ND Carbon tetrachloride mg/l 1 ND ND ND Ethylbenzene mg/l 1 ND ND ND Xylenes (total) mg/l 1 ND ND ND Styrene mg/l 1 ND ND ND

33 Waiau Beach WTP Treated Water Chemical and Physical Chloride mg/l Chlorine Residual mg/l Conductivity ms/cm Manganese mg/l ph ph Sulphate mg/l Turbidity Microbiology E.coli MPN/100mL 55 ND ND ND 1 < Trace Elements Boron mg/l Note: The Waiau Beach WTP was decomissioned on 4/12/2014. The Waiau Beach community is now supplied from Waikato WTP. 2005

34 Waitakere WTP Treated Water Acidic Herbicides 2,4,5- trichlorophenoxyacetic acid (2,4,5-T) mg/l 13 ND ND ND ,4-Dichlorophenoxyacetic acid (2,4-BD) mg/l 13 ND ND ND (2,4-dichlorophenoxyl) butanoic acid (2,4-DB) mg/l 13 ND ND ND Bentazone mg/l 13 ND ND ND Dichlorprop mg/l 13 ND ND ND MCPA mg/l 13 ND ND ND Mecoprop mg/l 13 ND ND ND Picloram mg/l 13 ND ND ND Triclopyr mg/l 13 ND ND ND Chemical and Physical UV absorbance Abs units Alkalinity (Total) mg/l CaCO Aluminium mg/l Bromate mg/l 13 ND ND ND Bromide mg/l ND Calcium mg/l Calcium Hardness mg/l Chlorate mg/l ND Chloride mg/l Chlorine Residual mg/l Chlorite mg/l 13 ND ND ND Colour Hazen 52 ND ND ND 5 10 Conductivity ms/cm Cyanide mg/l 5 ND ND ND Fluoride mg/l Iodide mg/l 5 ND ND ND Iron (Total) mg/l Magnesium mg/l Magnesium Hardness mg/l Manganese mg/l ph ph Potassium mg/l Silicon mg/l Sodium mg/l Sulphate mg/l Suspended Solids mg/l ND Total Hardness mg/l Total Organic Carbon TOC mg/l Turbidity NTU ND Microbiology E.coli MPN/100mL 345* ND ND ND 1 <1 * In 2014/15 twenty E.coli samples were not collected due to the Waitakere WTP being shutdown for maintenance purposes Nutrients Ammonia mg/l N ND Dissolved Reactive Phosphorus mg/l Nitrate mg/l as NO ND Nitrite mg/l ND ND TKN (Total Kjeldahl Nitrogen) mg/l N ND Total Phosphorus mg/l ND Plasticizers bis (2-ethylhexyl) adipate µg/l 1 ND ND ND 2 bis (2-ethylhexyl) phthalate µg/l 1 ND ND ND

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