Water Hardness and Quality in Aylesbury South
Supplied by Thames Water · Aylesbury South (SWA17)
Aylesbury South has hard water with quality that meets all UK drinking water standards.
Check a specific postcode in Aylesbury South
Water Quality Scorecard
Total Hardness
Guideline: 150+ mg/l is considered hard
297mg/l CaCO₃
UK Average: 197.72 mg/l CaCO₃Well Above 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
0.54mg/l
UK Average: 0.45 mg/lAbove Average
LowAverageHigh
Nitrate
UK Standard: max 50 mg/l
25mg/l
UK Average: 16.9 mg/lAbove 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
0.11mg/l
UK Average: 0.19 mg/lAverage
LowAverageHigh
Water Hardness in Aylesbury South
Hardness is the most searched water quality metric. It affects limescale buildup in kettles, boilers, and pipes.
297mg/l CaCO₃Hard
Soft
Mod. Soft
Slightly Hard
Mod. Hard
Hard
Very Hard
Aylesbury South has hard water at 297 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
- Aylesbury South (SWA17)
- Source Type
- Groundwater
- Treatment Works
- Aylesbury South Treatment Works
- Last Tested
- 2025-12-31
- Data Source
- Thames Water
Frequently Asked Questions
Is the water hard in Aylesbury South?▾
Yes, Aylesbury South has hard water at 297 mg/l CaCO₃. This is classified as "Hard" on the standard scale. You may notice limescale buildup in kettles and on taps.
Is Aylesbury South tap water safe to drink?▾
Yes, tap water in Aylesbury South 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 Aylesbury South?▾
The water hardness in Aylesbury South is 297 mg/l CaCO₃, which is classified as "Hard". This is above the UK national average of 170 mg/l.
Who supplies water to Aylesbury South?▾
Water in Aylesbury South is supplied by Thames Water, which serves the London and Thames Valley region. The water comes from underground aquifers and is treated at Aylesbury South Treatment Works.