What does the pH of tap water mean?

Read pH as its own measurement

pH has its own scale; it is not expressed in mg/l and cannot be converted into hardness. A high hardness result does not supply a missing pH result, and a conductivity or TDS meter cannot replace the relevant test.

Use the report’s reference range

DWI’s published zone-monitoring table gives a pH reference range of 6.5–9.5. Read that alongside the actual report period and sampling context. A number within this range is not an overall drinking-water safety score, and a historical zone mean is not a measurement at your kitchen tap.

If your home test differs

Keep the test instructions, sample time, tap and result. Ask your supplier or laboratory how to investigate a substantial difference. Do not alter household treatment or add chemicals simply to reproduce a value found on a website.

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