Tap water quality in Tower Hamlets

• TasteOKGood

  Unfiltered tap water

  OK

  Filtered with EcoPro

  Good

• ChlorineDrinkable0.69 mg CL2/lTotal chlorineHigh quality0.14 mg CL2/l

  Unfiltered tap water

  Drinkable

  Filtered with EcoPro

  High quality

  The water company reports total chlorine, which includes chloramine: the disinfectant that keeps the water safe to drink all the way to your tap.

• LimescaleHigh270 mg CaCO3/lLow270 mg CaCO3/lLimescale inhibitor

  Unfiltered tap water

  High

  Filtered with EcoPro

  Low

  Hardness (calcium and magnesium) does not change when you filter, which is why the value is the same in both columns. The EcoPro filter contains a limescale inhibitor that stops those minerals from forming deposits in kettles, coffee machines, taps and pipes: the water is just as hard, but it no longer forms limescale.

• MineralsHigh quality406.4 mg/lHigh quality406.4 mg/lMinerals kept

  Unfiltered tap water

  High quality

  Filtered with EcoPro

  High quality

  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

  Drinkable

  Filtered with EcoPro

  High quality

  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

  Drinkable

  Filtered with EcoPro

  High quality

• 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