Water Hardness and Quality in West Derby
Supplied by United Utilities · Prescot North
West Derby has soft water with quality that meets all UK drinking water standards.
Check a specific postcode in West Derby
Water Quality Scorecard
pH Level
UK Standard: 6.5 – 9.5
7.24pH units
UK Average: 7.43 pH unitsWell Below Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.59mg/l
UK Average: 0.45 mg/lWell Above Average
LowAverageHigh
Water Hardness in West Derby
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
0mg/l CaCO₃Soft
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
West Derby has soft water. This means less limescale buildup in your appliances, less soap needed for cleaning, and generally fewer issues with mineral deposits. You are unlikely to need a water softener.
Water Source Information
- Water Company
- United Utilities
- Supply Zone
- Prescot North
- Source Type
- Groundwater
- Treatment Works
- Knowsley Treatment Works
- Last Tested
- 2024-12-31
- Data Source
- United Utilities
Frequently Asked Questions
Is the water hard in West Derby?▾
No, West Derby has soft water at just 0 mg/l CaCO₃. You are unlikely to experience significant limescale issues.
Is West Derby tap water safe to drink?▾
Yes, tap water in West Derby 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 West Derby?▾
The water hardness in West Derby is 0 mg/l CaCO₃, which is classified as "Soft". This is below the UK national average of 170 mg/l.
Who supplies water to West Derby?▾
Water in West Derby is supplied by United Utilities, which serves the North West England region. The water comes from underground aquifers and is treated at Knowsley Treatment Works.