Water Hardness and Quality in Gonalston
Supplied by Severn Trent Water · Gedling Zone 27
Gonalston has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Gonalston
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
236.6mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.9pH units
UK Average: 7.43 pH unitsWell Above Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.26mg/l
UK Average: 0.45 mg/lWell Below Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
28.31mg/l
UK Average: 16.9 mg/lWell Above Average
LowAverageHigh
Lead
UK Standard: max 10 µg/l
1.76µg/l
UK Average: 1.08 µg/lWell Above Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.08mg/l
UK Average: 0.19 mg/lBelow Average
LowAverageHigh
Water Hardness in Gonalston
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
236.6mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Gonalston has hard water at 236.6 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
- Gedling Zone 27
- Source Type
- Groundwater
- Treatment Works
- Nottingham Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Severn Trent Water
Frequently Asked Questions
Is the water hard in Gonalston?▾
Yes, Gonalston has hard water at 236.6 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Gonalston tap water safe to drink?▾
Yes, tap water in Gonalston 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 Gonalston?▾
The water hardness in Gonalston is 236.6 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Gonalston?▾
Water in Gonalston is supplied by Severn Trent Water, which serves the West Midlands region. The water comes from underground aquifers and is treated at Nottingham Treatment Works.