Water Hardness and Quality in Coln St Aldwyns
Supplied by Severn Trent Water · Cotswold Zone 7
Coln St Aldwyns has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Coln St Aldwyns
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
265.5mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.55pH units
UK Average: 7.43 pH unitsAbove Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.34mg/l
UK Average: 0.45 mg/lBelow Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
24.3mg/l
UK Average: 16.9 mg/lAbove Average
LowAverageHigh
Lead
UK Standard: max 10 µg/l
0.89µg/l
UK Average: 1.08 µg/lAbove Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.09mg/l
UK Average: 0.19 mg/lBelow Average
LowAverageHigh
Water Hardness in Coln St Aldwyns
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
265.5mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Coln St Aldwyns has hard water at 265.5 mg/l. You will likely experience significant limescale buildup in kettles, boilers, and on bathroom surfaces. Many residents in your area use water softeners or anti-limescale products.
Water Source Information
- Water Company
- Severn Trent Water
- Supply Zone
- Cotswold Zone 7
- Source Type
- Mixed
- Treatment Works
- Gloucestershire Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Severn Trent Water
Frequently Asked Questions
Is the water hard in Coln St Aldwyns?▾
Yes, Coln St Aldwyns has hard water at 265.5 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Coln St Aldwyns tap water safe to drink?▾
Yes, tap water in Coln St Aldwyns is safe to drink. It is treated and tested by Severn Trent Water and meets all UK Drinking Water Inspectorate standards. All tested parameters are within regulatory limits.
What is the water hardness in Coln St Aldwyns?▾
The water hardness in Coln St Aldwyns is 265.5 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Coln St Aldwyns?▾
Water in Coln St Aldwyns is supplied by Severn Trent Water, which serves the West Midlands region. The water comes from mixed sources and is treated at Gloucestershire Treatment Works.