pH Water Test Results Guide

What this test measures

pH tells you how acidic or alkaline your water is on a scale of 0–14, where 7 is neutral. It affects how water tastes, how it behaves with your pipes and appliances, and — in pools and hot tubs — how well your sanitiser works.

The UK standard

UK drinking water regulations require tap water to sit between pH 6.5 and 9.5. Most supplies arrive comfortably inside that band. For pools and hot tubs, a range of roughly 7.2–7.6 is the widely used comfort zone.

Reading your strip

Dip a strip into your sample for two seconds, hold it level and wait 30 seconds. Match the pH pad against the colour chart on your instructions card and read off the closest band. Strips give you a clear range rather than a lab-precise number — exactly what you need for spotting problems and tracking changes over time.

What to do next

• Confirm it first. One strip is a snapshot — re-test with a fresh strip and a fresh sample before acting on a result.
• Low pH water can slowly corrode metal pipework — if you also notice a metallic taste, it’s worth investigating together.
• If a reading on a mains supply stays above the standard after re-testing, contact your water supplier — they investigate quality concerns free of charge.
• On a private supply (well, borehole or spring), your local council’s environmental health team can arrange accredited lab testing.
• Thinking about a filter? Test before and after fitting it so you can see exactly what it changed.