Water Hardness and Quality in Market Harborough
Supplied by Severn Trent Water · Harborough Zone 21
Market Harborough has very hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Market Harborough
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
301.9mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.31pH units
UK Average: 7.43 pH unitsBelow Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.08mg/l
UK Average: 0.45 mg/lWell Below Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
17.1mg/l
UK Average: 16.9 mg/lAverage
LowAverageHigh
Lead
UK Standard: max 10 µg/l
1.25µg/l
UK Average: 1.08 µg/lWell Above Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.25mg/l
UK Average: 0.19 mg/lWell Above Average
LowAverageHigh
Water Hardness in Market Harborough
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
301.9mg/l CaCO₃Very Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Market Harborough has hard water at 301.9 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
- Severn Trent Water
- Supply Zone
- Harborough Zone 21
- Source Type
- Groundwater
- Treatment Works
- Leicestershire Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Severn Trent Water
Frequently Asked Questions
Is the water hard in Market Harborough?▾
Yes, Market Harborough has hard water at 301.9 mg/l CaCO₃. This is classified as "Very Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Market Harborough tap water safe to drink?▾
Yes, tap water in Market Harborough is safe to drink. It is treated and tested by Severn Trent Water and meets all UK Drinking Water Inspectorate standards. All tested parameters are within regulatory limits.
What is the water hardness in Market Harborough?▾
The water hardness in Market Harborough is 301.9 mg/l CaCO₃, which is classified as "Very Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Market Harborough?▾
Water in Market Harborough is supplied by Severn Trent Water, which serves the West Midlands region. The water comes from underground aquifers and is treated at Leicestershire Treatment Works.