Water Hardness and Quality in South West Holderness
Supplied by Yorkshire Water · South West Holderness (East Riding of Yorkshire)
South West Holderness has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in South West Holderness
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
294.67mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.26pH units
UK Average: 7.43 pH unitsBelow Average
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
38.3mg/l
UK Average: 16.9 mg/lWell Above Average
LowAverageHigh
Lead
UK Standard: max 10 µg/l
0.25µg/l
UK Average: 1.08 µg/lWell Below Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.08mg/l
UK Average: 0.19 mg/lBelow Average
LowAverageHigh
Water Hardness in South West Holderness
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
294.67mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
South West Holderness has hard water at 294.67 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
- Yorkshire Water
- Supply Zone
- South West Holderness (East Riding of Yorkshire)
- Source Type
- Groundwater
- Treatment Works
- East Riding of Yorkshire Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Yorkshire Water
Frequently Asked Questions
Is the water hard in South West Holderness?▾
Yes, South West Holderness has hard water at 294.67 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is South West Holderness tap water safe to drink?▾
Yes, tap water in South West Holderness is safe to drink. It is treated and tested by Yorkshire Water and meets all UK Drinking Water Inspectorate standards. All tested parameters are within regulatory limits.
What is the water hardness in South West Holderness?▾
The water hardness in South West Holderness is 294.67 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to South West Holderness?▾
Water in South West Holderness is supplied by Yorkshire Water, which serves the Yorkshire and the Humber region. The water comes from underground aquifers and is treated at East Riding of Yorkshire Treatment Works.