Water Hardness in Harrow on the Hill
Harrow on the Hill has very hard water at 363 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.
363
mg/l CaCO₃
What Does Very Hard Water Mean?
With a hardness of 363 mg/l, Harrow on the Hill 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
- Affinity Water
- Supply Zone
- Harrow South (AF093)
- Source Type
- Groundwater
- Treatment Works
- Harrow South Treatment Works
Full Water Quality Report for Harrow on the Hill
See all 8 water quality parameters including pH, chlorine, lead, nitrate, fluoride and more.