The W11 area (Notting Hill) is served by Thames Water. Water here is typically very hard (318 mg/L CaCO₃). Enter any W11 postcode for your exact zone report.
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Check the tap water quality for any postcode in the W11 area. Data sourced from official annual compliance reports submitted to the Drinking Water Inspectorate (DWI). Results include water hardness, nitrate levels, lead, trihalomethanes (THMs), fluoride and PFAS enforcement status.
W11 (Notting Hill) is served by Thames Water. Very Hard water (318 mg/L CaCO₃). Heavy limescale on heating elements, taps and showerheads is expected. A water softener or reverse osmosis system is strongly recommended.
Yes — UK tap water is subject to rigorous testing and regulation, with over 99.9% of samples passing all legal standards each year. However, water quality can vary between individual supply zones even within the same postcode district. Entering your full postcode (e.g. W11 1AA) gives you data for your specific supply zone rather than a district average.
Heavy limescale on heating elements, taps and showerheads is expected. A water softener or reverse osmosis system is strongly recommended. Hard water is not a health risk, but it does affect appliances. Limescale on kettle elements increases electricity consumption. In very hard water areas, a water softener can extend the life of boilers, washing machines, and dishwashers significantly.
Enter your full postcode above to check your exact supply zone — hardness, nitrates, lead, PFAS status and more.
Check W11 water →Yes. W11 tap water is safe to drink under current UK guidelines. Over 99.9% of tap water tests in the UK pass legal standards each year. Enter your full postcode for a detailed report on your specific supply zone.
W11 is primarily supplied by Thames Water. Thames Water, Anglian Water, United Utilities, Yorkshire Water, Southern Water, Severn Trent and several other companies hold active DWI PFAS improvement notices. Enter your full postcode to confirm your exact supplier.
W11 has very hard water, typically around 318 mg/L CaCO₃. Heavy limescale on heating elements, taps and showerheads is expected. A water softener or reverse osmosis system is strongly recommended.
PFAS (per- and polyfluoroalkyl substances) are detected at low levels in many UK water supplies. The best way to check current PFAS status for W11 is to enter your exact postcode above and check your zone's report, or visit the Drinking Water Inspectorate (DWI) website for the latest enforcement register.