What is the water hardness in Perth?

Between 8 and 69 mg/L depending on the district, with a median of 49. The hardest measured district is PH33 at 69 mg/L and the softest is PH50 at 8. Figures come from water company drinking-water tests, with postcode-area estimates for districts that have no reading of their own.

Do I need a water softener in Perth?

Usually not. At a median of 49 mg/L limescale is a minor issue in Perth. A filter jug or a shower filter covers the everyday effects. Only districts at 180 mg/L or above are worth a softener quote.

Is Perth a hard water area?

No. Tap water across the PH postcode area is soft, so limescale is not a problem here, with a median of 49 mg/L calcium carbonate. It ranges from 8 mg/L in PH50 to 69 mg/L in PH33, from 29 districts with their own water company reading and 14 estimated from the area.

Soft
Moderately soft
Slightly hard
Hard
Very hard

Hardness in mg/L as calcium carbonate, the scale UK water companies report in.

Hardness by PH district

Hardest first. Hard starts at 180 mg/L, very hard at 250. Districts marked with an asterisk take the area's median rather than a reading of their own.

District	Area	mg/L	Hardness
PH33	Highland	69	moderately soft
PH49	Highland	69	moderately soft
PH31	Highland	69	moderately soft
PH20	Highland	58	soft
PH26	Highland	58	soft
PH22	Highland	58	soft
PH24	Highland	58	soft
PH21	Highland	58	soft
PH23	Highland	58	soft
PH25	Highland	58	soft
PH19	Highland	55	soft
PH9	Perth and Kinross	53	soft
PH18	Perth and Kinross	53	soft
PH11*	Perth and Kinross	49	soft
PH37*	Highland	49	soft
PH44*	Highland	49	soft
PH2	Perth and Kinross	49	soft
PH36*	Highland	49	soft
PH8	Perth and Kinross	49	soft
PH14*	Perth and Kinross	49	soft
PH1	Perth and Kinross	49	soft
PH38*	Highland	49	soft
PH17*	Perth and Kinross	49	soft
PH34*	Highland	49	soft
PH15*	Perth and Kinross	49	soft
PH42*	Highland	49	soft
PH43*	Highland	49	soft
PH35*	Highland	49	soft
PH30*	Highland	49	soft
PH16*	Perth and Kinross	49	soft
PH32	Highland	29	soft
PH13	Perth and Kinross	27	soft
PH12	Angus	27	soft
PH10	Perth and Kinross	27	soft
PH3	Perth and Kinross	17	soft
PH5	Perth and Kinross	17	soft
PH7	Perth and Kinross	17	soft
PH6	Perth and Kinross	17	soft
PH4	Perth and Kinross	17	soft
PH39	Highland	10	soft
PH40	Highland	10	soft
PH41	Highland	10	soft
PH50	Highland	8	soft

You do not need a softener in Perth.

At 49 mg/L the practical effects are minor. If you notice anything, it is usually chlorine rather than hardness: a shower filter or a filter jug deals with that.

Check your exact postcode

The area figure is a median. Your district can sit anywhere between 8 and 69 mg/L.

Nearby areas

Is Perth a hard water area?: No. The median hardness across PH postcode districts is 49 mg/L calcium carbonate, which is soft. 0% of the 43 districts we hold readings for are hard or very hard (180 mg/L and above).
What is the water hardness in Perth?: Between 8 and 69 mg/L depending on the district, with a median of 49. The hardest measured district is PH33 at 69 mg/L and the softest is PH50 at 8. Figures come from water company drinking-water tests, with postcode-area estimates for districts that have no reading of their own.
Do I need a water softener in Perth?: Usually not. At a median of 49 mg/L limescale is a minor issue in Perth. A filter jug or a shower filter covers the everyday effects. Only districts at 180 mg/L or above are worth a softener quote.

Hardness as mg/L calcium carbonate from water company drinking-water tests and postcode checkers. See the UK hardness map for every area.