South West
Tap water quality in Plymouth
Plymouth
The water company's test results for this supply zone, against the UK's legal limits. 2 above the legal limit. See all parameters.
- Water company
- South West Water
- Local authority
- Plymouth
- Data for
- 2025
TasteBadGood
Unfiltered tap water
Filtered with EcoPro
ChlorineDrinkable0.66 mg CL2/lHigh quality0.013 mg CL2/l
Unfiltered tap water
Filtered with EcoPro
Where the water company reports only total chlorine, that is shown. Total chlorine includes chloramine, which many UK supplies (including London) use for disinfection.
LimescaleLowLowLimescale inhibitor
Unfiltered tap water
Filtered with EcoPro
The EcoPro filter contains a limescale inhibitor that stops the water's calcium and magnesium from forming deposits in kettles, coffee machines, taps and pipes. It doesn't remove those minerals, but limescale no longer forms. The hardness measured in your area is in the full parameter list.
MineralsNot reportedNot reported
Unfiltered tap water
Filtered with EcoPro
TAPP Water EcoPro filters do not remove healthy minerals such as calcium and magnesium, so the mineral content (total dissolved solids, TDS) is the same before and after filtering.
PathogensDrinkableIsolated failureHigh quality
Unfiltered tap water
Filtered with EcoPro
During the year a sample failed the legal limit, but only in isolation (a single sample, or under 5% of samples). The rating reflects the water supplied to the zone rather than one sample; every failure is counted in the compliance line at the top of this report and shown in the full parameter list.
Heavy metalsDrinkableHigh quality
Unfiltered tap water
Filtered with EcoPro
MicroplasticsNot reportedNot reported
Unfiltered tap water
Filtered with EcoPro
Microplastics have been found in most tap water, although the amount varies. Water companies do not report on microplastics.
PFASNot reportedNot reported
Unfiltered tap water
Filtered with EcoPro
PFAS in drinking water are covered by Drinking Water Inspectorate guidance to water companies. Where no value appears, the water company has not reported one.
The "Filtered" column shows the estimated result after filtering with TAPP Water EcoPro filters.
During the report period, a small number of water samples did not meet drinking water standards. This may be due to old pipes or local plumbing in the neighbourhood. View all parameters
Improve your tap water
TAPP Water filters reduce chlorine, heavy metals and microplastics in tap water, without plastic bottles.
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About this data
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.