Skip to main content
tapwater
England and Wales average 9.0

Tap water in TS11, Redcar and ClevelandSafe to drink.Slightly hard.

Supplied by Northumbrian Water. 1,616 samples, 20 substances, latest on 25 November 2025. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.5 / 10

The tank is as full as the score. The specks are the minerals that make water hard.

What to do about it

ZeroWater 12-Cup Ready-Pour

ZeroWater 12-Cup Ready-Pour

£40typical price

Households concerned about PFAS and heavy metals

Check price at Amazon (opens in new tab)
Waterdrop 10UA Under Sink

Waterdrop 10UA Under Sink

£70typical price

High-volume under-sink filtration without RO complexity

Check price at Waterdrop (opens in new tab)
BRITA Marella XL + MAXTRA PRO

BRITA Marella XL + MAXTRA PRO

£25typical price

Basic chlorine and taste improvement on a budget

Check price at Amazon (opens in new tab)

We earn a commission if you buy through these links, at no extra cost to you. It never changes which product we put first. How we make money

What's in a glass of TS11 water

Every bubble is a substance the lab measured. The higher it floats, the closer it came to its legal limit, the dashed line at the top.

Aluminium came closest to a limit, at 26% of it. 17 of 18 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCadmium: 0.000018 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Boron: 0.0064 mg/L, <1% of the 1 mg/L limitBoron<1%Arsenic: 0.00007 mg/L, <1% of the 0.01 mg/L limitArsenic<1%Nitrite: 0.0061 mg/L, 1% of the 0.5 mg/L limitNitrite1%Chromium: 0.00067 mg/L, 1% of the 0.05 mg/L limitChromium1%Copper: 0.031 mg/L, 2% of the 2 mg/L limitCopper2%Selenium: 0.00083 mg/L, 2% of the 0.04 mg/L limitSelenium2%Lead: 0.00021 mg/L, 2% of the 0.01 mg/L limitLead2%Nitrate: 1.5 mg/L, 3% of the 50 mg/L limitNitrate3%Antimony: 0.00016 mg/L, 3% of the 0.005 mg/L limitAntimony3%Bromate: 0.0005 mg/L, 5% of the 0.01 mg/L limitBromate5%Nickel: 0.0011 mg/L, 6% of the 0.02 mg/L limitNickel6%Turbidity: 0.23 NTU, 6% of the 4 NTU limitTurbidity6%Colour: 1.3 mg/L Pt/Co, 7% of the 20 mg/L Pt/Co limitColour7%Manganese: 0.0044 mg/L, 9% of the 0.05 mg/L limitManganese9%Fluoride: 0.17 mg/L, 11% of the 1.5 mg/L limitFluoride11%Iron: 0.044 mg/L, 22% of the 0.2 mg/L limitIron22%Aluminium: 0.053 mg/L, 26% of the 0.2 mg/L limitAluminium26%
  1. Aluminium26%
  2. Iron22%
  3. Fluoride11%
  4. Manganese9%
  5. Colour7%
  6. Turbidity6%
  7. Nickel6%
  8. Bromate5%
  9. Antimony3%
  10. Nitrate3%
  11. Lead2%
  12. Selenium2%
  13. Copper2%
  14. Chromium1%
  15. Nitrite1%
  16. Arsenic<1%
  17. Boron<1%
  18. Cadmium<1%
  • pH 7.1 pH
  • Conductivity 170 µS/cm
All 20 results as a table
SubstanceResultLegal limitShare of limit
Aluminium0.053 mg/L0.2 mg/L
26%
Colour1.3 mg/L Pt/Co20 mg/L Pt/Co
7%
Manganese0.0044 mg/L0.05 mg/L
9%
pH7.1 pHNo legal limit–
Turbidity0.23 NTU4 NTU
6%
Conductivity170 µS/cmNo legal limit–
Iron0.044 mg/L0.2 mg/L
22%
Nitrite0.0061 mg/L0.5 mg/L
1%
Boron0.0064 mg/L1 mg/L
<1%
Fluoride0.17 mg/L1.5 mg/L
11%
Nitrate1.5 mg/L50 mg/L
3%
Copper0.031 mg/L2 mg/L
2%
Bromate0.0005 mg/L0.01 mg/L
5%
Nickel0.0011 mg/L0.02 mg/L
6%
Lead0.00021 mg/L0.01 mg/L
2%
Cadmium0.000018 mg/L0.005 mg/L
<1%
Antimony0.00016 mg/L0.005 mg/L
3%
Arsenic0.00007 mg/L0.01 mg/L
<1%
Selenium0.00083 mg/L0.04 mg/L
2%
Chromium0.00067 mg/L0.05 mg/L
1%

143mg of limescale minerals in every litre, typical for the TS area. TS11 has no reading of its own.

Middling hardness. Some scale, slowly

Below the point where a softener pays for itself. Descaling the kettle now and then is all most homes need.

Soft400 mg/L
Outside your tap

Your coastal water is the Tees Coastal, rated moderate

The Environment Agency rated the Tees Coastal as moderate for ecological health in its 2025 assessment, meaning the coastal water is noticeably changed by pollution or engineering. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants.

None of this is a test of your tap water. Environment Agency record · River health across England

Within 10 km

23

forever-chemical detections in nearby rivers and groundwater

At 2 sites. The highest was PFBA at 0.0073 µg/L, at Spring Emerging at Low Farm, Pinchinthorpe, Guisborough TS14 8HQ, 9.0 km away, in September 2023. These are river and borehole samples, not tests of your tap water.

Every PFAS sample around Middlesbrough · Which filters remove PFAS · PFAS explained

TS11 in short

Tap water in TS11 (Redcar and Cleveland) is supplied by Northumbrian Water in the Redcar and Cleveland Central zone and scores 9.5 out of 10, against an England and Wales average of 9.0. None of the 20 tested substances came close to a limit. The latest sample is from 25 November 2025.

  • 5th cleanest of 6 areas tested in Redcar and Cleveland1 area in Redcar and Cleveland scored lower. The best is TS12 on 9.7.
  • PFAS found at 2 monitoring sites within 10 kmThose are river and groundwater samples, not tap water. The highest was PFBA about 9 km away. What was measured
  • Nothing tested came within 40% of its legal limitThe highest was Aluminium at 26% of the 0.2 mg/L maximum. See every reading

Next door

TS69.7 out of 10 · 143 mg/LTS109.3 out of 10 · 130 mg/LTS129.7 out of 10 · 130 mg/LTS149.6 out of 10 · 143 mg/LTS139.7 out of 10 · 130 mg/L

Questions about TS11 water

Is TS11 tap water safe to drink?

Based on the latest tests, TS11 (Redcar and Cleveland) water scores 9.5/10, which is safe. 0 of 20 tested contaminants exceeded recommended levels. Water is supplied by Northumbrian Water.

What contaminants are in TS11 water?

We tested 20 contaminants in TS11 water. None exceeded recommended safe levels. PFAS (forever chemicals) were also measured in rivers and groundwater within 10 km, though not in the tap-water tests themselves.

Who supplies water in TS11?

TS11 (Redcar and Cleveland) is supplied by Northumbrian Water. You can view their full profile and compliance data on our supplier page.

Is TS11 water hard or soft?

No hardness reading has been published for TS11 itself. Across the TS postcode area the typical value is 143 mg/L CaCO3, which is classified as moderately hard. This is a moderate hardness level.

Should I use a water filter in TS11?

TS11 water scored 9.5/10 with no contaminants above recommended levels. A filter is optional but can improve taste, especially if you notice a chlorine flavour. See our filter recommendations for your area.

Are there PFAS forever chemicals in TS11 water?

The tap-water tests we hold for TS11 do not include a PFAS result. Environment Agency monitoring found PFAS in 23 river and groundwater samples from 2 sites within 10 km of TS11, the highest being PFBA at 0.0073 µg/L about 9 km away. These are environmental samples, not tests of tap water. The UK currently has no legal limit for PFAS in drinking water; the Drinking Water Inspectorate uses a 0.1 µg/L guideline for individual compounds. Reverse osmosis filters can reduce PFAS levels.

How clean is the coastal water near TS11?

The Environment Agency rated the Tees Coastal as moderate for ecological health in its 2025 assessment, meaning the coastal water is noticeably changed by pollution or engineering. It fails the chemical test, as every river, estuary and stretch of coast in England does, because of long-lasting pollutants such as mercury, PFOS (a forever chemical) and old flame retardants. This is a rating of the coastal water, not of tap water in TS11, which is treated before it reaches homes.

Keep reading

PFAS explainedHow to test your waterBest water filtersFilter shower headsWater testing kitsUK water rankingsWater hardness checkerWater hardness map

River and groundwater readings near TS11

Environment Agency samples from rivers, groundwater and reservoirs nearby. Not your tap water. For scale they are shown against drinking water limits; rivers are judged against much stricter environmental standards, and on those every river in England fails for chemicals.

SubstanceReadingDrinking water limit
Manganese0.15 mg/L0.05 mg/L
Iron2.2 mg/L0.2 mg/L
pH8.2 pHNone
Temperature8.4 °CNone
Conductivity840 µS/cmNone
Ammonia0.065 mg/L0.5 mg/L
Nitrate1.5 mg/L50 mg/L
Nitrite0.035 mg/L0.5 mg/L
Phosphate0.023 mg/LNone
Dissolved Oxygen11.7 mg/LNone

Get alerts for your area

We'll email you when water quality data changes for TS11.

Source: Northumbrian Water test results, published through the Stream Water Data Portal; rivers and PFAS from the Environment Agency. Page updated . How we score · Where the data comes from