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tapwater
England and Wales average 9.0

Tap water in CT12, ThanetSafe to drink.

Supplied by Southern Water. 14,104 samples, 22 substances, latest on 29 April 2026. Everything is inside the legal limit, and nothing comes close to it.

See the filter we recommendSee everything that was tested

9.4 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of CT12 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.

Nitrate came closest to a limit, at 62% of it. 16 of 17 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitChromium: 0.00019 mg/L, <1% of the 0.05 mg/L limitChromium<1%Cadmium: 0.000031 mg/L, <1% of the 0.005 mg/L limitCadmium<1%Copper: 0.0137 mg/L, <1% of the 2 mg/L limitCopper<1%Antimony: 0.000048 mg/L, <1% of the 0.005 mg/L limitAntimony<1%Selenium: 0.00043 mg/L, 1% of the 0.04 mg/L limitSelenium1%Nitrite: 0.009 mg/L, 2% of the 0.5 mg/L limitNitrite2%Lead: 0.00019 mg/L, 2% of the 0.01 mg/L limitLead2%Arsenic: 0.0002 mg/L, 2% of the 0.01 mg/L limitArsenic2%Turbidity: 0.13 NTU, 3% of the 4 NTU limitTurbidity3%Manganese: 0.00178 mg/L, 4% of the 0.05 mg/L limitManganese4%Nickel: 0.00084 mg/L, 4% of the 0.02 mg/L limitNickel4%Trihalomethanes: 0.00463 mg/L, 5% of the 0.1 mg/L limitTrihalomethanes5%Iron: 0.00928 mg/L, 5% of the 0.2 mg/L limitIron5%Ammonia: 0.025 mg/L, 5% of the 0.5 mg/L limitAmmonia5%Aluminium: 0.0113 mg/L, 6% of the 0.2 mg/L limitAluminium6%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Nitrate: 31.1 mg/L, 62% of the 50 mg/L limitNitrate62%
  1. Nitrate62%
  2. Colour15%
  3. Aluminium6%
  4. Ammonia5%
  5. Iron5%
  6. Trihalomethanes5%
  7. Nickel4%
  8. Manganese4%
  9. Turbidity3%
  10. Arsenic2%
  11. Lead2%
  12. Nitrite2%
  13. Selenium1%
  14. Antimony<1%
  15. Copper<1%
  16. Cadmium<1%
  17. Chromium<1%
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 667 µS/cm
  • pH 7.4 pH
  • PFAS (total) 0.0256 µg/L
All 22 results as a table
SubstanceResultLegal limitShare of limit
Nitrate31.1 mg/L50 mg/L
62%
Lead0.00019 mg/L0.01 mg/L
2%
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Conductivity667 µS/cmNo legal limit–
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Turbidity0.13 NTU4 NTU
3%
pH7.4 pHNo legal limit–
Aluminium0.0113 mg/L0.2 mg/L
6%
Iron0.00928 mg/L0.2 mg/L
5%
Manganese0.00178 mg/L0.05 mg/L
4%
Nitrite0.009 mg/L0.5 mg/L
2%
Trihalomethanes0.00463 mg/L0.1 mg/L
5%
Ammonia0.025 mg/L0.5 mg/L
5%
Copper0.0137 mg/L2 mg/L
<1%
Arsenic0.0002 mg/L0.01 mg/L
2%
Cadmium0.000031 mg/L0.005 mg/L
<1%
Chromium0.00019 mg/L0.05 mg/L
<1%
Nickel0.00084 mg/L0.02 mg/L
4%
Antimony0.000048 mg/L0.005 mg/L
<1%
Selenium0.00043 mg/L0.04 mg/L
1%
PFAS (total)0.0256 µg/LNo legal limit–
Outside your tap

Your river is the Monkton and Minster Marshes, rated moderate

The Environment Agency rated the Monkton and Minster Marshes as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by dissolved oxygen and phosphate. 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

CT12 in short

Tap water in CT12 (Thanet) is supplied by Southern Water in the Thanet Central zone and scores 9.4 out of 10, against an England and Wales average of 9.0. None of the 22 tested substances came close to a limit. The latest sample is from 29 April 2026.

  • Nitrate is the reading closest to its limit, at 62% of the 50 mg/L maximumIt passed with room to spare, and everything else tested sat further below its limit. See every reading
  • 2nd cleanest of 6 areas tested in ThanetOnly 1 area in Thanet scored higher. The best is CT11 on 9.4.
  • Scores higher than 3 of 5 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

CT119.4 out of 10CT79.3 out of 10CT89.4 out of 10CT99.3 out of 10CT109.3 out of 10

Questions about CT12 water

Is CT12 tap water safe to drink?

Based on the latest tests, CT12 (Thanet) water scores 9.4/10, which is safe. 0 of 22 tested contaminants exceeded recommended levels. Water is supplied by Southern Water.

What contaminants are in CT12 water?

We tested 22 contaminants in CT12 water. None exceeded recommended safe levels. PFAS (forever chemicals) were also detected at 0.02563 µg/L in local drinking water tests.

Who supplies water in CT12?

CT12 (Thanet) is supplied by Southern Water. You can view their full profile and compliance data on our supplier page.

Should I use a water filter in CT12?

CT12 water scored 9.4/10 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 CT12 water?

Yes, PFAS (per- and polyfluoroalkyl substances) have been detected in CT12 at 0.02563 µg/L from drinking monitoring. The UK currently has no legal limit for PFAS in drinking water. Reverse osmosis and activated carbon filters can reduce PFAS levels.

How clean is the river near CT12?

The Environment Agency rated the Monkton and Minster Marshes as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by dissolved oxygen and phosphate. 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 river, not of tap water in CT12, 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 CT12

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
pH7.42 pHNone
Temperature13.4 °CNone
Conductivity872 µS/cmNone
Nitrate17 mg/L50 mg/L
Dissolved Oxygen8.72 mg/LNone
Copper0.0016 mg/L2 mg/L
Lead0.00005 mg/L0.01 mg/L
Zinc0.04 mg/LNone
Nickel0.0025 mg/L0.02 mg/L
Manganese0.00072 mg/L0.05 mg/L
Boron0.16 mg/L1 mg/L
PFAS (total)0.00071 µg/LNone

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We'll email you when water quality data changes for CT12.

Source: Southern 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