Tap water quality in Bristol
Bristol is estimated to have hard water (~250 mg/L CaCO₃), supplied and treated to UK drinking water standards.
Supplied by Bristol Water · Lab results for this supply zone are not yet published
We do not yet hold published laboratory results for the Bristol supply zone. Readings vary street by street, so the most reliable figures are the ones for your own postcode.
Check your postcodeWater hardness
EstimatedEstimated: Hard (~250 mg/L CaCO₃)
Based on typical regional geology in City of Bristol (often limestone or similar). Lab-tested data for this specific supply zone is not yet available.
Your area is likely to have hard water. This can affect skin conditions and cause limescale buildup.
Living with hard water in Bristol
Bristol's water is estimated at around 250 mg/L CaCO₃ from local geology, which would put it firmly in the hard water band. Hardness is dissolved calcium and magnesium picked up as water passes through chalk and limestone. It is not a health risk — the minerals are the same ones found in food — but it has practical consequences.
- Limescale. Kettles, showerheads and heating elements scale up faster. Descaling every few months keeps appliances efficient.
- Skin. Some people with eczema find hard water aggravates symptoms, though the evidence on softeners as a treatment is mixed rather than settled.
- Soap and detergent. Hard water needs more of both to lather, which is why dishwasher salt exists.
Common questions about Bristol tap water
Is Bristol tap water safe to drink?
Bristol tap water is supplied by Bristol Water and is treated to UK drinking water standards. We do not yet hold published lab results for the Bristol supply zone. Readings vary by supply zone, so check your exact postcode.
Is Bristol hard or soft water?
Bristol is estimated to have hard water. Based on local geology, hardness is estimated at around 250 mg/L CaCO₃, which would be classed as hard on the UK scale. Lab CaCO₃ data for the supply zone is not yet published.
What is the water hardness in Bristol?
Water hardness in Bristol is estimated at around 250 mg/L CaCO₃ (hard), based on local geology. Above roughly 200 mg/L you can expect limescale in kettles and appliances, and some people find hard water aggravates dry skin.
Who supplies the tap water in Bristol?
Tap water in Bristol is supplied by Bristol Water. They are responsible for treatment, distribution and the laboratory testing reported to the Drinking Water Inspectorate.
Sewage spills in Bristol
Official Environment Agency storm overflow data near the town centre.
Check your postcode
Look up any UK address for lab results and nearby overflows.