Water Hardness and Quality in Culham
Supplied by Thames Water · Culham (OX7)
Culham has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Culham
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
295mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.4pH units
UK Average: 7.43 pH unitsAverage
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.43mg/l
UK Average: 0.45 mg/lAverage
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
31mg/l
UK Average: 16.9 mg/lWell Above Average
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
0.12mg/l
UK Average: 0.19 mg/lAverage
LowAverageHigh
Water Hardness in Culham
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
295mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Culham has hard water at 295 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
- Thames Water
- Supply Zone
- Culham (OX7)
- Source Type
- Mixed
- Treatment Works
- Culham Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Culham?▾
Yes, Culham has hard water at 295 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Culham tap water safe to drink?▾
Yes, tap water in Culham 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 Culham?▾
The water hardness in Culham is 295 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Culham?▾
Water in Culham is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from mixed sources and is treated at Culham Treatment Works.