30mg of limescale minerals in every litre, the median across OL districts
Is Oldham a hard water area?
No. Tap water across the OL postcode area is soft, so limescale is not a problem here, with a median of 30 mg/L calcium carbonate. It ranges from 22 mg/L in OL13 to 45 mg/L in OL3, from 15 districts with their own water company reading and 1 estimated from the area.
- Soft
- 0 to 60 mg/L
- Moderately soft
- 60 to 120 mg/L
- Slightly hard
- 120 to 180 mg/L
- Hard
- 180 to 200 mg/L
- Very hard
- 200 to 400 mg/L
Hardness by OL 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.
You do not need a softener in Oldham.
At 30 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 22 and 45 mg/L.
Questions about Oldham water
Is Oldham a hard water area?
No. The median hardness across OL postcode districts is 30 mg/L calcium carbonate, which is soft. 0% of the 16 districts we hold readings for are hard or very hard (180 mg/L and above).
What is the water hardness in Oldham?
Between 22 and 45 mg/L depending on the district, with a median of 30. The hardest measured district is OL3 at 45 mg/L and the softest is OL13 at 22. 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 Oldham?
Usually not. At a median of 30 mg/L limescale is a minor issue in Oldham. 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.