Water Hardness and Quality in Catteshall
Supplied by Thames Water · Godalming (G3)
Catteshall has slightly hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Catteshall
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
136mg/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
0.36mg/l
UK Average: 0.45 mg/lBelow Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
17mg/l
UK Average: 16.9 mg/lAverage
LowAverageHigh
Lead
UK Standard: max 10 µg/l
0.9µg/l
UK Average: 1.08 µg/lAbove Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.13mg/l
UK Average: 0.19 mg/lAbove Average
LowAverageHigh
Water Hardness in Catteshall
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
136mg/l CaCO₃Slightly Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Catteshall 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
- Thames Water
- Supply Zone
- Godalming (G3)
- Source Type
- Groundwater
- Treatment Works
- Godalming Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Catteshall?▾
Catteshall has moderately hard water at 136 mg/l CaCO₃. Some limescale may occur but it is manageable with regular descaling.
Is Catteshall tap water safe to drink?▾
Yes, tap water in Catteshall is safe to drink. It is treated and tested by Thames Water and meets all UK Drinking Water Inspectorate standards. All tested parameters are within regulatory limits.
What is the water hardness in Catteshall?▾
The water hardness in Catteshall is 136 mg/l CaCO₃, which is classified as "Slightly Hard". This is below the UK national average of 170 mg/l.
Who supplies water to Catteshall?▾
Water in Catteshall is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from underground aquifers and is treated at Godalming Treatment Works.