Measure Result (12-month avg.) National guideline What it means at home
Hardness 93 mg/L ≤ 200 mg/L (aesthetic) SA Water rates 60–200 mg/L as good quality water. It is neither soft and corrosive nor high enough for severe scaling.
Total dissolved solids 279 mg/L ≤ 600 mg/L (aesthetic) These are the minerals left behind when water dries on glass, tiles and tapware.
pH 7.3 6.5–8.5 (aesthetic) Neutral and inside the national range.
Chloride 75 mg/L ≤ 250 mg/L (aesthetic) Well inside the guideline.
Free chlorine 0.2 mg/L ≤ 5 mg/L (health), ≤ 0.6 mg/L (aesthetic) This is the disinfectant that keeps water safe through the pipes. At this level, any taste or smell should be faint.
Copper 0.0024 mg/L ≤ 2 mg/L (health) Very low at SA Water's sampling points, and 100% health compliant.
Lead 0.0003 mg/L ≤ 0.005 mg/L (health) Very low at SA Water's sampling points, and 100% health compliant.
Fluoride 0.8 mg/L ≤ 1.5 mg/L (health) Added for public health.