Water Hardness and Quality in Wooburn Green
Supplied by Thames Water · Wooburn Green (SWA30)
Wooburn Green has very hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Wooburn Green
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
303mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.5pH units
UK Average: 7.43 pH unitsAbove Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.48mg/l
UK Average: 0.45 mg/lAverage
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
20mg/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
0.16mg/l
UK Average: 0.19 mg/lWell Above Average
LowAverageHigh
Water Hardness in Wooburn Green
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
303mg/l CaCO₃Very Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Wooburn Green has hard water at 303 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
- Wooburn Green (SWA30)
- Source Type
- Groundwater
- Treatment Works
- Wooburn Green Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Wooburn Green?▾
Yes, Wooburn Green has hard water at 303 mg/l CaCO₃. This is classified as "Very Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Wooburn Green tap water safe to drink?▾
Yes, tap water in Wooburn Green 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 Wooburn Green?▾
The water hardness in Wooburn Green is 303 mg/l CaCO₃, which is classified as "Very Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Wooburn Green?▾
Water in Wooburn Green is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from underground aquifers and is treated at Wooburn Green Treatment Works.