Water Hardness in Chelsham
Chelsham has very hard water at 303 mg/l CaCO₃. This is above the UK national average of 197.72 mg/l. You may notice limescale buildup on taps, in kettles, and around showerheads.
303
mg/l CaCO₃
Very HardUK average: 197.72 mg/l
303
0 (Soft)200 (Hard)400+ (Very Hard)
What Does Very Hard Water Mean?
With a hardness of 303 mg/l, Chelsham has very hard water. This level of hardness is common in areas supplied from chalk and limestone aquifers in the South East of England.
You will likely notice white limescale deposits on taps, showerheads, and inside your kettle. Over time, limescale can reduce the efficiency of boilers and heating systems, increasing energy costs. A water softener can help prevent these issues.
Water Supplier
- Water Company
- Thames Water
- Supply Zone
- Croydon East (SLE1)
- Source Type
- River
- Treatment Works
- Croydon East Treatment Works
Full Water Quality Report for Chelsham
See all 8 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.
Frequently Asked Questions
Is water hard in Chelsham?▾
Yes, Chelsham has hard water at 303 mg/l CaCO₃, classified as "Very Hard". You will likely notice limescale buildup on taps, in kettles, and around showerheads. A water softener or regular descaling can help manage this.
What is the hardness of water in Chelsham?▾
The water hardness in Chelsham is 303 mg/l CaCO₃ (milligrams per litre of calcium carbonate). This is classified as "Very Hard" on the standard UK scale and is above the national average of 197.72 mg/l. Water is supplied by Thames Water from river sources.
Who supplies water to Chelsham?▾
Water in Chelsham is supplied by Thames Water, which covers the London and Thames Valley region. The water is sourced from river abstraction and treated at Croydon East Treatment Works before distribution.