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tapwater
England and Wales average 9.0

Tap water in ME18, MaidstoneToo few tap tests to call it.

Supplied by Southern Water. 8 substances, latest on 15 September 2026. These are river and groundwater samples near ME18, not tests of treated tap water, so treat the score as a rough guide.

See the filter we recommendSee everything that was tested

8.7 / 10

The tank is as full as the score.

What to do about it

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What's in a glass of ME18 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.

Ammonia came closest to a limit, at 24% of it. 3 of 3 substances used under a quarter of theirs.

0%25%50%75%limitLegal limitNitrite: 0.023 mg/L, 5% of the 0.5 mg/L limitNitrite5%Nitrate: 4.8 mg/L, 10% of the 50 mg/L limitNitrate10%Ammonia: 0.12 mg/L, 24% of the 0.5 mg/L limitAmmonia24%
  1. Ammonia24%
  2. Nitrate10%
  3. Nitrite5%
  • pH 7.93 pH
  • Temperature 18.1 °C
  • Conductivity 672 µS/cm
  • Phosphate 0.28 mg/L
  • Dissolved Oxygen 8.02 mg/L
All 8 results as a table
SubstanceResultLegal limitShare of limit
pH7.93 pHNo legal limit–
Temperature18.1 °CNo legal limit–
Conductivity672 µS/cmNo legal limit–
Nitrate4.8 mg/L50 mg/L
10%
Nitrite0.023 mg/L0.5 mg/L
5%
Phosphate0.28 mg/LNo legal limit–
Dissolved Oxygen8.02 mg/LNo legal limit–
Ammonia0.12 mg/L0.5 mg/L
24%
Outside your tap

Your river is the Medway at Maidstone, rated moderate

The Environment Agency rated the Medway at Maidstone as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by fish 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

ME18 in short

Tap water in ME18 (Maidstone) is supplied by Southern Water in the Maidstone Central zone and scores 8.7 out of 10, against an England and Wales average of 9.0. None of the 8 tested substances came close to a limit. The latest sample is from 15 September 2026.

  • 5th cleanest of 6 areas tested in Maidstone1 area in Maidstone scored lower. The best is ME15 on 9.4.
  • Nothing tested came within 40% of its legal limitThe highest was Ammonia at 24% of the 0.5 mg/L maximum. See every reading
  • Scores higher than 2 of 6 neighbouring districtsWater here is typical for the immediate area, which usually means the same treatment works and the same supply zone.

Next door

ME179.2 out of 10ME167.7 out of 10ME149.3 out of 10ME159.4 out of 10TN129.3 out of 10 · 150 mg/LME197.7 out of 10

Questions about ME18 water

Is ME18 tap water safe to drink?

Based on the latest tests, ME18 (Maidstone) water scores 8.7/10, which is safe. 0 of 8 tested contaminants exceeded recommended levels. Water is supplied by Southern Water.

What contaminants are in ME18 water?

We tested 8 contaminants in ME18 water. None exceeded recommended safe levels.

Who supplies water in ME18?

ME18 (Maidstone) 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 ME18?

ME18 water scored 8.7/10 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 ME18 water?

No PFAS (forever chemicals) result is attached to the tap-water tests for ME18, 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 ME18?

The Environment Agency rated the Medway at Maidstone as moderate for ecological health in its 2025 assessment, meaning the river is noticeably changed by pollution or engineering. It is held back by fish 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 ME18, which is treated before it reaches homes.

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