Water quality
Water can contain a variety of natural mineral salts depending on where it has been abstracted from. We ensure that potential contaminants are removed from your drinking water. The table below shows the average values from samples taken over the last financial year for your postcode area. If you would like information about PFAS and drinking water, please visit our region’s bulk water supplier, Seqwater’s website.
Table acronyms: ADWG = Australian Drinking Water Guidelines; PHR = Public Health Regulation.
Water Quality Report for South
Microbiological performance in detail
| Number Of Samples | Number of Positive E. coli Results (12mth) | Required E. coli Performance (12mth) | Actual E. coli Performance (12mth) | Met PHR |
| 3213 | 5 | 98% | 99.84% |
Chemical (health) performance
| Parameter | Units | Number of Samples | Min Result | Max Result | Average Result | 95th Percentile | ADWG Guideline | Met ADWG |
| Arsenic | mg/L | 78 | <0.001 | 0.001 | <0.001 | <0.001 | 0.01 | |
| Bromate | mg/L | 120 | <0.005 | 0.02 | <0.005 | 0.01 | 0.02 | |
| Chlorate | mg/L | 579 | 0.02 | 0.52 | 0.15 | 0.32 | 0.8* | NR |
| Chlorine Free | mg/L | 3870 | <0.1 | 3.8 | 0.24 | 1.2 | 5 | |
| Chlorine Total | mg/L | 3870 | <0.1 | 4 | 1.34 | 3.3 | 5 | |
| Copper | mg/L | 372 | <0.01 | 0.25 | 0.002 | 0.005 | 2 | |
| Dichloroacetic Acid (HAA) | µg/L | 20 | 7 | 43 | 16.95 | 35.4 | 100 | |
| Fluoride | mg/L | 145 | <0.1 | 1.03 | 0.67 | 0.97 | 1.5 | |
| Lead | mg/L | 372 | <0.01 | <0.01 | <0.01 | <0.01 | 0.01 | |
| Manganese | mg/L | 950 | <0.001 | 0.04 | 0.003 | 0.008 | 0.5 | |
| Monochloramine NH2Cl | mg/L | 1345 | <0.09 | 2.8 | 0.71 | 2.3 | 3 | |
| Monochloroacetic Acid (HAA) | µg/L | 20 | <1 | 6 | 1.6 | 4.1 | 150 | |
| Nickel | mg/L | 372 | <0.001 | 0.003 | <0.001 | 0.001 | 0.02 | |
| Nitrite as NO2 | mg/L | 1336 | <0.01 | 5.2 | 1.46 | 3.04 | 50 | |
| Nitrate NO3 | mg/L | 1336 | <0.01 | 1.4 | 0.2 | 0.84 | 3 | |
| Trichloroacetic Acid (HAAs) | µg/L | 20 | 4 | 37 | 13.3 | 30.35 | 100 | |
| Trihalomethanes | µg/L | 595 | 20 | 216 | 86 | 159 | 250 | |
| Totals | 15400 |
*QLD Health Interim Chlorate Guideline Value.
Chemical (aesthetic) performance
| Parameter | Units | Number of Samples | Min Result | Max Result | Average Result | 95th Percentile | ADWG Guideline | Met ADWG |
| Alkalinity Total | mg/L as CaCO3 | 203 | 33.3 | 95.4 | 58.34 | 93.78 | N/A | N/A |
| Aluminium | mg/L | 950 | <0.01 | 0.48 | 0.02 | 0.05 | 0.2 | |
| Calcium | mg/L | 208 | 7 | 42 | 19.45 | 34 | N/A | N/A |
| Chloride | mg/L | 121 | 16 | 77 | 44.49 | 74 | 250 | |
| Colour Apparent | PCU | 950 | <1 | 42 | 1.87 | 3.5 | 15 | |
| Colour True | PCU | 950 | <1 | 2 | <1 | 1.4 | 15 | |
| Conductivity | uS/cm | 3870 | 109 | 711 | 327 | 564 | 1000 | |
| Copper | mg/L | 372 | <0.001 | 0.25 | 0.002 | 0.005 | 1 | |
| Iron | mg/L | 950 | <0.01 | 0.59 | 0.009 | 0.03 | 0.3 | |
| Magnesium | mg/L | 199 | 3 | 19 | 7.29 | 13 | N/A | N/A |
| Manganese | mg/L | 950 | <0.001 | 0.04 | 0.003 | 0.008 | 0.1 | |
| pH | pH Units | 3870 | 6.8 | 8.8 | 7.7 | 8 | 6.5-9.2 | |
| Potassium | mg/L | 121 | 1.4 | 5 | 2.34 | 3.3 | N/A | N/A |
| Silica as SiO2 | mg/L | 78 | 8 | 10 | 8.83 | 9 | 80 | |
| Sodium | mg/L | 121 | 16 | 68 | 32.2 | 44 | 180 | |
| Sulphate | mg/L | 122 | 14 | 65 | 32.5 | 47.9 | 250 | |
| Temperature | °C | 3870 | 9.2 | 32.6 | 23.6 | 28.7 | N/A | N/A |
| Total Hardness | mg/L as CaCO3 | 199 | 39 | 183 | 78.47 | 139 | 200 | |
| Turbidity | NTU | 3870 | 0.06 | 16 | 0.24 | 0.41 | 5 | |
| Zinc | mg/L | 372 | <0.005 | 0.29 | 0.002 | 0.008 | 3 | |
| Totals | 22346 |
