Karratha vs Oak Valley
Side-by-side tap water quality comparison
Which suburb has better water?
It's very close! Karratha scores 9.6/10 and Oak Valley scores 9.8/10. Both suburbs have similar water quality based on ADWG compliance data.
Visual comparison
Key metrics comparison
Full water quality comparison
All parameters compared against Australian Drinking Water Guidelines (ADWG)
| Parameter | Karratha | Oak Valley | Unit | ADWG Guideline |
|---|---|---|---|---|
| Alkalinity | 49 Measured | 12 Measured | mg/L CaCO3 | No limit |
| Aluminium | 0.008 Good | 0.002 Good | mg/L | < 0.2 |
| Calcium | — | 2.43 Measured | mg/L | No limit |
| Chloride | 42 Good | 5 Good | mg/L | < 250 |
| Colour | 1 Good | 1 Good | HU | < 15 |
| Copper | — | 0.4811 Good | mg/L | < 2 |
| E. coli | — | 0 Compliant | MPN/100mL | < 0 |
| Fluoride | 0.1 Good | 0.1 Good | mg/L | < 1.5 |
| Hardness | 54 Good | 7 Good | mg/L CaCO3 | < 200 |
| Iron | 0.009 Good | 0.0043 Good | mg/L | < 0.3 |
| Lead | — | 0.0025 Good | mg/L | < 0.01 |
| Magnesium | — | 0.29 Measured | mg/L | No limit |
| Manganese | 0.005 Good | 0.0027 Good | mg/L | < 0.1 |
| Nitrate | 0.44 Good | 3.57 Good | mg/L | < 50 |
| pH | 7.85 Normal | 7.3 Normal | pH units | 6.5 – 8.5 |
| Sodium | 21 Good | 3.3 Good | mg/L | < 180 |
| Sulfate | 0.15 Good | 1 Good | mg/L | < 500 |
| Total Dissolved Solids | 157 Good | 25 Good | mg/L | < 600 |
| Trihalomethanes | 0.052 Good | — | mg/L | < 0.25 |
| Turbidity | 0.1 Good | 0.13 Good | NTU | < 5 |
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Disclaimer: This comparison is for general informational purposes only and does not constitute medical advice or professional guidance. Data is sourced from Water Corporation and SA Water. Values shown are based on the most recent published water quality reports and may not reflect real-time conditions at your tap. Water quality can vary due to local plumbing, seasonal changes, and other factors. For specific health concerns, consult a qualified health professional or contact your local water utility. See our Terms of Use.