Water Hardness and Quality in Petworth
Supplied by Thames Water · Haslemere (G6)
Petworth has moderately soft water with quality that meets all UK drinking water standards.
Check a specific postcode in Petworth
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
94mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Below Average
LowAverageHigh
pH Level
UK Standard: 6.5 – 9.5
7.3pH units
UK Average: 7.43 pH unitsBelow Average
LowAverageHigh
Free Chlorine
Guideline: below 1 mg/l
0.5mg/l
UK Average: 0.45 mg/lAbove Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
8mg/l
UK Average: 16.9 mg/lBelow 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
0.09mg/l
UK Average: 0.19 mg/lBelow Average
LowAverageHigh
Water Hardness in Petworth
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
94mg/l CaCO₃Moderately Soft
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Petworth has soft water. This means less limescale buildup in your appliances, less soap needed for cleaning, and generally fewer issues with mineral deposits. You are unlikely to need a water softener.
Water Source Information
- Water Company
- Thames Water
- Supply Zone
- Haslemere (G6)
- Source Type
- Groundwater
- Treatment Works
- Haslemere Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Petworth?▾
No, Petworth has soft water at just 94 mg/l CaCO₃. You are unlikely to experience significant limescale issues.
Is Petworth tap water safe to drink?▾
Yes, tap water in Petworth 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 Petworth?▾
The water hardness in Petworth is 94 mg/l CaCO₃, which is classified as "Moderately Soft". This is below the UK national average of 170 mg/l.
Who supplies water to Petworth?▾
Water in Petworth is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from underground aquifers and is treated at Haslemere Treatment Works.