Water Hardness and Quality in Holt
Supplied by Wessex Water · Holt
Holt has very hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Holt
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
362.8mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.6pH units
UK Average: 7.43 pH unitsWell Above Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.3mg/l
UK Average: 0.45 mg/lBelow Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
8.9mg/l
UK Average: 16.9 mg/lBelow Average
LowAverageHigh
Lead
UK Standard: max 10 µg/l
0.5µg/l
UK Average: 1.08 µg/lAverage
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.51mg/l
UK Average: 0.19 mg/lWell Above Average
LowAverageHigh
Water Hardness in Holt
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
362.8mg/l CaCO₃Very Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Holt has hard water at 362.8 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
- Wessex Water
- Supply Zone
- Holt
- Source Type
- Groundwater
- Treatment Works
- Holt Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Wessex Water
Frequently Asked Questions
Is the water hard in Holt?▾
Yes, Holt has hard water at 362.8 mg/l CaCO₃. This is classified as "Very Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Holt tap water safe to drink?▾
Yes, tap water in Holt is safe to drink. It is treated and tested by Wessex Water and meets all UK Drinking Water Inspectorate standards. All tested parameters are within regulatory limits.
What is the water hardness in Holt?▾
The water hardness in Holt is 362.8 mg/l CaCO₃, which is classified as "Very Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Holt?▾
Water in Holt is supplied by Wessex Water, which serves the South West England region. The water comes from underground aquifers and is treated at Holt Treatment Works.