Water Hardness in Horsham
Horsham has moderately soft water at 76 mg/l CaCO₃. This is below the UK national average of 197.72 mg/l. You are unlikely to experience significant limescale issues.
76
mg/l CaCO₃
Moderately SoftUK average: 197.72 mg/l
76
0 (Soft)200 (Hard)400+ (Very Hard)
What Does Moderately Soft Water Mean?
At just 76 mg/l, Horsham has moderately soft water. This means very little dissolved calcium and magnesium, so limescale buildup is minimal.
Soft water lathers easily with soap, is gentler on skin and hair, and causes less wear on appliances. A water softener is not needed at this hardness level.
Water Supplier
- Water Company
- Thames Water
- Supply Zone
- Cranleigh (G4)
- Source Type
- Groundwater
- Treatment Works
- Cranleigh Treatment Works
Full Water Quality Report for Horsham
See all 8 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.
Frequently Asked Questions
Is water hard in Horsham?▾
No, Horsham has soft water at 76 mg/l CaCO₃, classified as "Moderately Soft". You are unlikely to experience limescale issues.
What is the hardness of water in Horsham?▾
The water hardness in Horsham is 76 mg/l CaCO₃ (milligrams per litre of calcium carbonate). This is classified as "Moderately Soft" on the standard UK scale and is below the national average of 197.72 mg/l. Water is supplied by Thames Water from underground aquifer sources.
Who supplies water to Horsham?▾
Water in Horsham is supplied by Thames Water, which covers the London and Thames Valley region. The water is sourced from underground aquifers (boreholes) and treated at Cranleigh Treatment Works before distribution.