Water Hardness and Quality in Castle Hill
Supplied by United Utilities · Bromley Cross
Castle Hill has slightly hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Castle Hill
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
114.6mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Below Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.3pH units
UK Average: 7.43 pH unitsBelow Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.1mg/l
UK Average: 0.45 mg/lWell Below Average
LowAverageHigh
Lead
UK Standard: max 10 µg/l
0.55µg/l
UK Average: 1.08 µg/lAverage
LowAverageHigh
Water Hardness in Castle Hill
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
114.6mg/l CaCO₃Slightly Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Castle Hill has moderately hard water. You may notice some limescale buildup in your kettle and on taps over time. A regular descaling routine should be sufficient for most households.
Water Source Information
- Water Company
- United Utilities
- Supply Zone
- Bromley Cross
- Source Type
- Mixed
- Treatment Works
- Bolton Treatment Works
- Last Tested
- 2024-12-31
- Data Source
- United Utilities
Frequently Asked Questions
Is the water hard in Castle Hill?▾
Castle Hill has moderately hard water at 114.6 mg/l CaCO₃. Some limescale may occur but it is manageable with regular descaling.
Is Castle Hill tap water safe to drink?▾
Yes, tap water in Castle Hill is safe to drink. It is treated and tested by United Utilities and meets all UK Drinking Water Inspectorate standards. All tested parameters are within regulatory limits.
What is the water hardness in Castle Hill?▾
The water hardness in Castle Hill is 114.6 mg/l CaCO₃, which is classified as "Slightly Hard". This is below the UK national average of 170 mg/l.
Who supplies water to Castle Hill?▾
Water in Castle Hill is supplied by United Utilities, which serves the North West England region. The water comes from mixed sources and is treated at Bolton Treatment Works.