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tapwater
England and Wales average 9.0

Tap water in BN14, WorthingSafe to drink.

Supplied by Southern Water. 23,218 samples, 25 substances, latest on 30 April 2026. Everything is inside the legal limit. One result, nitrate, sits close to the line.

See the filter we recommendSee everything that was tested

9.0 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of BN14 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 75% of it. 19 of 21 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitCopper: 0.002 mg/L, <1% of the 2 mg/L limitCopper<1%Nitrite: 0.004 mg/L, <1% of the 0.5 mg/L limitNitrite<1%Selenium: 0.0005 mg/L, 1% of the 0.04 mg/L limitSelenium1%Bromate: 0.00013 mg/L, 1% of the 0.01 mg/L limitBromate1%Boron: 0.0159 mg/L, 2% of the 1 mg/L limitBoron2%Chromium: 0.001 mg/L, 2% of the 0.05 mg/L limitChromium2%Cadmium: 0.00012 mg/L, 2% of the 0.005 mg/L limitCadmium2%Turbidity: 0.13 NTU, 3% of the 4 NTU limitTurbidity3%Manganese: 0.00178 mg/L, 4% of the 0.05 mg/L limitManganese4%Fluoride: 0.06 mg/L, 4% of the 1.5 mg/L limitFluoride4%Mercury: 0.00004 mg/L, 4% of the 0.001 mg/L limitMercury4%Iron: 0.00928 mg/L, 5% of the 0.2 mg/L limitIron5%Lead: 0.00053 mg/L, 5% of the 0.01 mg/L limitLead5%Aluminium: 0.0113 mg/L, 6% of the 0.2 mg/L limitAluminium6%Antimony: 0.0003 mg/L, 6% of the 0.005 mg/L limitAntimony6%Ammonia: 0.039 mg/L, 8% of the 0.5 mg/L limitAmmonia8%Arsenic: 0.001 mg/L, 10% of the 0.01 mg/L limitArsenic10%Colour: 3 mg/L Pt/Co, 15% of the 20 mg/L Pt/Co limitColour15%Trihalomethanes: 0.0159 mg/L, 16% of the 0.1 mg/L limitTrihalomethanes16%Nickel: 0.01 mg/L, 50% of the 0.02 mg/L limitNickel50%Nitrate: 37.5 mg/L, 75% of the 50 mg/L limitNitrate75%
  1. Nitrate75%
  2. Nickel50%
  3. Trihalomethanes16%
  4. Colour15%
  5. Arsenic10%
  6. Ammonia8%
  7. Antimony6%
  8. Aluminium6%
  9. Lead5%
  10. Iron5%
  11. Fluoride4%
  12. Mercury4%
  13. Manganese4%
  14. Turbidity3%
  15. Cadmium2%
  16. Chromium2%
  17. Boron2%
  18. Bromate1%
  19. Selenium1%
  20. Nitrite<1%
  21. Copper<1%
  • pH 7.3 pH
  • Coliform Bacteria none found
  • E. coli none found
  • Conductivity 537 µS/cm
All 25 results as a table
SubstanceResultLegal limitShare of limit
pH7.3 pHNo legal limit–
Nitrate37.5 mg/L50 mg/L
75%
Aluminium0.0113 mg/L0.2 mg/L
6%
Iron0.00928 mg/L0.2 mg/L
5%
Manganese0.00178 mg/L0.05 mg/L
4%
Lead0.00053 mg/L0.01 mg/L
5%
Coliform Bacteria0 count/100mlMust be zeroNone found
E. coli0 count/100mlMust be zeroNone found
Conductivity537 µS/cmNo legal limit–
Colour3 mg/L Pt/Co20 mg/L Pt/Co
15%
Turbidity0.13 NTU4 NTU
3%
Trihalomethanes0.0159 mg/L0.1 mg/L
16%
Bromate0.00013 mg/L0.01 mg/L
1%
Ammonia0.039 mg/L0.5 mg/L
8%
Nitrite0.004 mg/L0.5 mg/L
<1%
Copper0.002 mg/L2 mg/L
<1%
Arsenic0.001 mg/L0.01 mg/L
10%
Cadmium0.00012 mg/L0.005 mg/L
2%
Chromium0.001 mg/L0.05 mg/L
2%
Nickel0.01 mg/L0.02 mg/L
50%
Antimony0.0003 mg/L0.005 mg/L
6%
Selenium0.0005 mg/L0.04 mg/L
1%
Fluoride0.06 mg/L1.5 mg/L
4%
Mercury0.00004 mg/L0.001 mg/L
4%
Boron0.0159 mg/L1 mg/L
2%
Outside your tap

Your river is the Teville Stream, rated bad

The Environment Agency rated the Teville Stream as bad for ecological health in its 2025 assessment, meaning the river is severely damaged, with most of the expected wildlife missing. It is held back by fish, dissolved oxygen and insects and other small river life. 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

BN14 in short

Tap water in BN14 (Worthing) is supplied by Southern Water in the Worthing Central zone and scores 9.0 out of 10, against an England and Wales average of 9.0. None of the 25 tested substances came close to a limit. The latest sample is from 30 April 2026.

  • The lowest score of the 4 areas tested in WorthingBN14 scores 9 out of 10. The best in Worthing, BN11, scores 9.3.
  • Nitrate is the reading closest to its limit, at 75% of the 50 mg/L maximumIt passed, but with less headroom than anything else tested here. Worth watching in the next round of results. See every reading
  • Every one of the 3 neighbouring districts scores higherBN12 next door scores 9.3, against 9 here. Supply zones, not distance, explain the gap. See BN12

Next door

BN129.3 out of 10BN119.3 out of 10BN139.3 out of 10

Questions about BN14 water

Is BN14 tap water safe to drink?

Based on the latest tests, BN14 (Worthing) water scores 9/10, which is safe. 0 of 25 tested contaminants exceeded recommended levels. Water is supplied by Southern Water.

What contaminants are in BN14 water?

We tested 25 contaminants in BN14 water. None exceeded recommended safe levels.

Who supplies water in BN14?

BN14 (Worthing) 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 BN14?

BN14 water scored 9/10 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 BN14 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for BN14, and the Environment Agency has no PFAS detections in rivers or groundwater within 10 km of it. That reflects where sampling has happened as much as the water itself.

How clean is the river near BN14?

The Environment Agency rated the Teville Stream as bad for ecological health in its 2025 assessment, meaning the river is severely damaged, with most of the expected wildlife missing. It is held back by fish, dissolved oxygen and insects and other small river life. 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 BN14, which is treated before it reaches homes.

Keep reading

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

River and groundwater readings near BN14

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
Manganese0.039 mg/L0.05 mg/L
pH8.03 pHNone
Temperature11 °CNone
Conductivity456 µS/cmNone
Nitrate0.99 mg/L50 mg/L
Nitrite0.0053 mg/L0.5 mg/L
Phosphate0.047 mg/LNone
Dissolved Oxygen9.96 mg/LNone
Ammonia0.16 mg/L0.5 mg/L
Hardness (as CaCO3)299 mg/LNone
Lead0.00004 mg/L0.01 mg/L
Zinc0.0036 mg/LNone
Nickel0.0024 mg/L0.02 mg/L
Copper0.00012 mg/L2 mg/L

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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