Durban Height Waterworks, Design capacity: 615 ML/d, Period: 01 July 2013-30 June 2014 Durban Heights WW Raw Durban Heights WW Final Determinands Units Minimum Average Percentile Maximum Minimum Average Percentile Maximum E. coli count per 100 ml 0 3 20 60 0 0 0 0 Not Detected Giardia species count per 10 L 0 0 0 0 - - - - Not Detected Cryptosporidium species count per 10 L 0 0 0 0 - - - - Not Detected Total chlorine mg/l - - - - 0.90 1.25 1.48 1.60 5 Fluoride g/l <100.00 58.92* 103.25* 106.00 <100.00 <100.00 <100.00 <100.00 1500 Nitrate as N mg/l <0.05 0.26* 0.43* 0.45 0.22 0.22 0.22 0.22 0.9 Nitrite as N mg/l <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 11 Sulphate mg/l 2.34 4.35 7.05 7.47 5.05 5.05 5.05 5.05 500 Antimony g/l <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 20 Arsenic g/l <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 10 Cadmium g/l <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 3 Chromium g/l <5.00 4.11* 6.22* 6.22 <5.00 <5.00 <5.00 <5.00 50 Cobalt g/l <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 500 Copper mg/l <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 2 Cyanide (Recoverable) g/l <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 70 Iron mg/l 0.14 0.32 0.45 0.47 <0.02 0.02* 0.03* 0.03 2.0 Lead g/l <4.00 19.60* 55.68* 63.60 <4.00 <4.00 <4.00 <4.00 10 Manganese mg/l 0.02 0.04 0.07 0.09 <0.01 0.01* 0.01* 0.01 0.5 Mercury g/l <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 6 Nickel g/l <10.00 38.75* 50.00* 50.00 <10.00 <10.00 <10.00 <10.00 70 Selenium g/l <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 <2.00 10 Vanadium g/l <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 200 Total organic carbon mg/l 1.99 2.36 2.80 3.03 1.45 2.11 2.63 2.71 10 Chloroform g/l - - - - 18.70 26.89 36.90 38.80 300 Bromoform g/l - - - - <0.10 0.29* 1.40* 2.74 100 Dibromochloromethane g/l - - - - 8.00 11.44 17.55 17.60 100 Bromodichloromethane g/l - - - - 7.54 13.39 20.55 21.30 60 Total dissolved solids mg/l 63.00 75.55 93.02 96.20 75.00 75.00 75.00 75.00 1200 Ammonia as N mg/l <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 <0.04 1.5 Colour mg/l Pt-Co 1.60 4.33 8.38 9.70 1.40 1.40 1.40 1.40 15 Turbidity NTU 0.90 4.95 8.42 27.00 0.10 0.21 0.32 0.53 5 Conductivity ms/m 9.61 12.90 16.39 68.40 7.07 14.07 17.58 20.30 170 Chloride mg/l 7.71 11.22 15.66 16.20 15.1 15.1 15.1 15.1 300 Sulphate mg/l 2.34 4.35 7.05 7.47 5.05 5.05 5.05 5.05 250 Zinc mg/l <0.03 0.06* 0.15* 0.17 <0.03 <0.03 <0.03 <0.03 5 Sodium mg/l 7.36 11.03 15.34 15.80 12.2 12.2 12.2 12.2 200 Iron mg/l 0.14 0.32 0.45 0.47 <2.00 0.02* 0.03* 0.03 0.3 Manganese mg/l 0.02 0.04 0.07 0.09 <0.01 0.01* 0.01* 0.01 0.1 Phenols g/l <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 <10.00 10
Percentile Determinands Units Minimum Average Percentile Maximum Minimum Average Maximum Somatic Coliphages count per 10 ml 0 0 0 0 0 0 0 0 Not Detected Heterotrophic plate count @ 37 o C count per ml - - - - 0 0 1 91 1000 Coliforms count per 100 ml 22 870 2878 >4838 0 0 0 0 10 ph ph units 6.4-8.3 8.6 7.6-8.1 8.4 5 to 9.7 Free Chlorine mg/l - - - - 0.80 1.04 1.20 1.40 0.8 1.2 # Total Chlorine mg/l - - - - 0.90 1.25 1.48 1.60 No limit Turbidity NTU 0.90 4.95 8.42 27.00 0.10 0.21 0.32 0.53 1 Aluminium g/l 96.30 559.69 1226.85 1423.00 39.30 47.90 55.64 56.50 300 DETERMINANDS WITH NO LIMITS SPECIFIED IN Cyanide (Free) g/l <10.00 <10.00 <10.00 <10.00 - - - - No limit Suspended solids mg/l <4.00 3.70* 6.00* 6.00 <4.00 <4.00 <4.00 <4.00 No limit Trihalomethanes g/l - - - - 37.50 52.03 67.05 68.20 No limit SOC mg C/L - - - - 1.26 1.26 1.26 1.26 No limit have been adopted from the SANS 241: 2011 Drinking Water specification. # Umgeni Water Site Specific Internal Operating
Durban Heights final 2, Period: 01 July 2013-30 June 2014 Durban Heights final 2 Determinands Units Minimum Average Percentile Maximum E. coli count per 100 ml 0 0 0 0 Not Detected Total chlorine mg/l 0.90 1.30 1.50 1.80 5 Fluoride g/l <100.00 <100.00 <100.00 <100.00 1500 Nitrate as N mg/l 0.16 0.16 0.16 0.16 0.9 Nitrite as N mg/l <0.05 <0.05 <0.05 <0.05 11 Sulphate mg/l 4.63 4.63 4.63 4.63 500 Antimony g/l <2.00 <2.00 <2.00 <2.00 20 Arsenic g/l <2.00 <2.00 <2.00 <2.00 10 Cadmium g/l <1.00 <1.00 <1.00 <1.00 3 Chromium g/l <5.00 <5.00 <5.00 <5.00 50 Cobalt g/l <10.00 <10.00 <10.00 <10.00 500 Copper mg/l <0.05 <0.05 <0.05 <0.05 2 Cyanide (Recoverable) g/l <10.0 <10.0 <10.0 <10.0 70 Iron mg/l <0.02 0.02* 0.03* 0.05 2.0 Lead g/l <4.00 <4.00 <4.00 <4.00 10 Manganese mg/l <0.01 <0.01 <0.01 <0.01 0.5 Mercury g/l <0.50 <0.50 <0.50 <0.50 6 Nickel g/l <10.00 <10.00 <10.00 <10.00 70 Selenium g/l <2.00 <2.00 <2.00 <2.00 10 Vanadium g/l <10.00 <10.00 <10.00 <10.00 200 Total organic carbon mg/l 1.94 2.25 2.87 2.96 10 Chloroform g/l 8.98 27.67 44.71 49.60 300 Bromoform g/l <0.10 1.10* 5.70* 12.60 100 Dibromochloromethane g/l 7.70 14.80 28.86 30.40 100 Bromodichloromethane g/l 6.62 14.18 24.15 24.70 60 Dissolved solids mg/l 76 76 76 76 1200 Ammonia as N mg/l <0.04 <0.04 <0.04 <0.04 1.5 Colour mg/l Pt-Co <1.00 <1.00 <1.00 <1.00 15 Turbidity NTU 0.09 0.20 0.29 0.40 5 Conductivity ms/m 10.90 14.08 17.54 20.10 170 Chloride mg/l 14.10 14.10 14.10 14.10 300 Sulphate mg/l 4.63 4.63 4.63 4.63 250 Zinc mg/l <0.03 <0.03 <0.03 <0.03 5 Sodium mg/l 12.30 12.30 12.30 12.30 200 Iron mg/l <0.02 0.02* 0.03* 0.05 0.3 Manganese mg/l <0.01 <0.01 <0.01 <0.01 0.1 Phenols g/l <10.00 <10.00 <10.00 <10.00 10 Somatic Coliphages count per 10 ml 0 0 0 0 Not Detected Heterotrophic plate count @ 37 o count per ml C 0 0 1 9 1000 Coliforms count per 100 ml 0 0 0 1 10 ph ph units 7.6-8.1 8.4 5 to 9.7 Free Chlorine mg/l 0.80 1.09 1.30 1.40 0.8 1.2 # Total Chlorine mg/l 0.90 1.30 1.50 1.80 No limit Turbidity NTU 0.09 0.20 0.29 0.40 1 Aluminium g/l 72.50 72.50 72.50 72.50 300 DETERMINANDS WITH NO LIMITS SPECIFIED IN Suspended solids mg/l <4.00 <4.00 <4.00 <4.00 No limit Trihalomethanes g/l 25.50 57.81 98.59 107.00 No limit Temperature ºC 15.3 21.3 26.4 27.8 No limit have been adopted from the SANS 241: 2011 Drinking Water specification. # Umgeni Water Site Specific Internal Operating
Durban Heights final 3, Period: 01 July 2013-30 June 2014 Durban Heights final 3 Determinands Units Minimum Average Percentile Maximum E. coli count per 100 ml 0 0 0 0 Not Detected Total chlorine mg/l 0.90 1.26 1.50 1.60 5 Fluoride g/l <100.00 <100.00 <100.00 <100.00 1500 Nitrate as N mg/l 0.21 0.30 0.39 0.42 0.9 Nitrite as N mg/l <0.05 <0.05 <0.05 <0.05 11 Sulphate mg/l 2.83 5.07 6.95 7.13 500 Antimony g/l <2.00 <2.00 <2.00 <2.00 20 Arsenic g/l <2.00 <2.00 <2.00 <2.00 10 Cadmium g/l <1.00 <1.00 <1.00 <1.00 3 Chromium g/l <5.00 <5.00 <5.00 <5.00 50 Cobalt g/l <10.00 <10.00 <10.00 <10.00 500 Copper mg/l <0.05 <0.05 <0.05 <0.05 2 Cyanide (Recoverable) g/l <10.00 <10.00 <10.00 <10.00 70 Iron mg/l <2.00 0.02* 0.03* 0.08 2.0 Lead g/l <4.00 <4.00 <4.00 <4.00 10 Manganese mg/l <0.01 <0.01 <0.01 <0.01 0.5 Mercury g/l <0.50 <0.50 <0.50 <0.50 6 Nickel g/l <10.00 <10.00 <10.00 <10.00 70 Selenium g/l <2.00 <2.00 <2.00 <2.00 10 Vanadium g/l <10.00 <10.00 <10.00 <10.00 200 Total organic carbon mg/l 1.49 2.00 2.39 2.44 10 Chloroform g/l 9.02 29.31 49.83 50.10 300 Bromoform g/l <0.10 0.36* 1.87* 1.94 100 Dibromochloromethane g/l 5.07 10.82 14.17 14.50 100 Bromodichloromethane g/l 4.75 14.67 23.70 24.30 60 Total dissolved solids mg/l 66.00 89.08 108.90 110.00 1200 Ammonia as N mg/l <0.04 0.02* 0.04* 0.05 1.5 Colour mg/l Pt-Co <1.00 0.71* 1.50* 1.80 15 Turbidity NTU 0.09 0.21 0.30 0.44 5 Conductivity ms/m 10.90 14.11 17.56 19.80 170 Chloride mg/l 10.40 15.42 19.22 20.10 300 Sulphate mg/l 2.83 5.07 6.95 7.13 250 Zinc mg/l <0.03 <0.03 <0.03 <0.03 5 Sodium mg/l 6.35 10.81 16.25 17.60 200 Iron mg/l <2.00 0.02* 0.03* 0.08 0.3 Manganese mg/l <0.01 <0.01 <0.01 <0.01 0.1 Phenols g/l <10.00 <10.00 <10.00 <10.00 10 Somatic Coliphages count per 10 ml 0 0 0 0 Not Detected Heterotrophic plate count 37 o C count per ml 0 0 0 35 1000 Coliforms count per 100 ml 0 0 0 >201 10 ph ph units 7.6-8.0 8.1 5 to 9.7 Free Chlorine mg/l 0.80 1.06 1.30 1.40 0.8 1.2# Total Chlorine mg/l 0.90 1.26 1.50 1.60 No limit Turbidity NTU 0.09 0.21 0.30 0.44 1 Aluminium g/l <25.00 26.82* 61.03* 110.00 300 DETERMINANDS WITH NO LIMITS SPECIFIED IN Suspended solids mg/l <4.00 2.17* 2.90* 4.00 No limit Trihalomethanes g/l 21.00 54.18 83.83 85.20 No limit Ammonia (Free) mg N/L <0.00 <0.00 <0.00 <0.00 No limit Molybdenum µg Mo/L <10.00 <10.00 <10.00 <10.00 No limit Potassium mg /L 1.46 1.83 2.23 2.25 No limit HPC @ 21 cfu/ml 0 0 1 46 No limit Total Hardness mg CaCO 3 / L 34.80 43.49 51.89 54.76 No limit 2-MIB ng/l <5.00 <5.00 <5.00 <5.00 No limit have been adopted from the SANS 241: 2011 Drinking Water specification. # Umgeni Water Site Specific Internal Operating