Water Hardness and Quality in Crystal Palace & Norwood Park
Supplied by Thames Water · Crystal Palace & Norwood Park (SLW6)
Crystal Palace & Norwood Park has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Crystal Palace & Norwood Park
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
293mg/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
0.39mg/l
UK Average: 0.45 mg/lAverage
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
18mg/l
UK Average: 16.9 mg/lAverage
LowAverageHigh
Lead
UK Standard: max 10 µg/l
1.5µg/l
UK Average: 1.08 µg/lWell Above Average
LowAverageHigh
Fluoride
UK Standard: max 1.5 mg/l
0.17mg/l
UK Average: 0.19 mg/lWell Above Average
LowAverageHigh
Water Hardness in Crystal Palace & Norwood Park
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
293mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Crystal Palace & Norwood Park has hard water at 293 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
- Thames Water
- Supply Zone
- Crystal Palace & Norwood Park (SLW6)
- Source Type
- River
- Treatment Works
- Crystal Palace & Norwood Park Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Crystal Palace & Norwood Park?▾
Yes, Crystal Palace & Norwood Park has hard water at 293 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Crystal Palace & Norwood Park tap water safe to drink?▾
Yes, tap water in Crystal Palace & Norwood Park 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 Crystal Palace & Norwood Park?▾
The water hardness in Crystal Palace & Norwood Park is 293 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Crystal Palace & Norwood Park?▾
Water in Crystal Palace & Norwood Park is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from river sources and is treated at Crystal Palace & Norwood Park Treatment Works.