Water Hardness and Quality in Coventry Zone 5
Supplied by Severn Trent Water · Coventry Zone 5
Coventry Zone 5 has moderately hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Coventry Zone 5
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
192.5mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.33pH units
UK Average: 7.43 pH unitsBelow Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.23mg/l
UK Average: 0.45 mg/lWell Below Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
15.08mg/l
UK Average: 16.9 mg/lAverage
LowAverageHigh
Lead
UK Standard: max 10 µg/l
1.04µg/l
UK Average: 1.08 µg/lAbove Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.71mg/l
UK Average: 0.19 mg/lWell Above Average
LowAverageHigh
Water Hardness in Coventry Zone 5
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
192.5mg/l CaCO₃Moderately Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Coventry Zone 5 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
- Severn Trent Water
- Supply Zone
- Coventry Zone 5
- Source Type
- Mixed
- Treatment Works
- Warwickshire Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Severn Trent Water
Frequently Asked Questions
Is the water hard in Coventry Zone 5?▾
Coventry Zone 5 has moderately hard water at 192.5 mg/l CaCO₃. Some limescale may occur but it is manageable with regular descaling.
Is Coventry Zone 5 tap water safe to drink?▾
Yes, tap water in Coventry Zone 5 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 Coventry Zone 5?▾
The water hardness in Coventry Zone 5 is 192.5 mg/l CaCO₃, which is classified as "Moderately Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Coventry Zone 5?▾
Water in Coventry Zone 5 is supplied by Severn Trent Water, which serves the West Midlands region. The water comes from mixed sources and is treated at Warwickshire Treatment Works.