Water Hardness and Quality in Dormer Yard
Supplied by Thames Water · Bow (NLE43)
Dormer Yard has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Dormer Yard
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
282mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.8pH units
UK Average: 7.43 pH unitsWell Above Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.83mg/l
UK Average: 0.45 mg/lWell Above Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
28mg/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
0.19mg/l
UK Average: 0.19 mg/lWell Above Average
LowAverageHigh
Water Hardness in Dormer Yard
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
282mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Dormer Yard has hard water at 282 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
- Bow (NLE43)
- Source Type
- River
- Treatment Works
- Bow Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Dormer Yard?▾
Yes, Dormer Yard has hard water at 282 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Dormer Yard tap water safe to drink?▾
Yes, tap water in Dormer Yard 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 Dormer Yard?▾
The water hardness in Dormer Yard is 282 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Dormer Yard?▾
Water in Dormer Yard is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from river sources and is treated at Bow Treatment Works.