Water Hardness and Quality in North Holderness
Supplied by Yorkshire Water · North Holderness (East Riding of Yorkshire)
North Holderness has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in North Holderness
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
219.67mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.33pH units
UK Average: 7.43 pH unitsBelow Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.39mg/l
UK Average: 0.45 mg/lAverage
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
35.35mg/l
UK Average: 16.9 mg/lWell Above Average
LowAverageHigh
Lead
UK Standard: max 10 µg/l
1.07µg/l
UK Average: 1.08 µg/lWell Above Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.08mg/l
UK Average: 0.19 mg/lBelow Average
LowAverageHigh
Water Hardness in North Holderness
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
219.67mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
North Holderness has hard water at 219.67 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
- North 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 North Holderness?▾
Yes, North Holderness has hard water at 219.67 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is North Holderness tap water safe to drink?▾
Yes, tap water in North 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 North Holderness?▾
The water hardness in North Holderness is 219.67 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to North Holderness?▾
Water in North 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.