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Langley Park – Carshalton · Sutton
SES Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | Not reported | 0.2 – 1 | — |
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| Total Chlorinemg CL2/l | 0.15 | No limit | 0.03 |
|---|
General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | 209.8 | 80 – 459 | 209.8 |
|---|
| pH | 7.56 | 6.5 – 9.5 | 7.56 |
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| TurbidityNTU | 0.06 | ≤ 4 | 0.006 |
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| ColorColor Units | 0.7 | ≤ 15 | 0.7 |
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| TDSmg/l | 289estimated | 0 – 1,199 | 289 |
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| OdorTON | 0 | ≤ 3 | 0 |
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| Alkalinitymg CaCO3/l | 135.3 | No limit | 135.3 |
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Pathogens
Pathogens| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| eColiUFC/100ml | 0 | ≤ 0 | 0 |
|---|
| BacteriasNMP/100ml | 0 | ≤ 0 | 0 |
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| EnterococcusUFC/100ml | 0 | ≤ 0 | 0 |
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Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Mercuryμg Hg/l | Not reported | ≤ 1 | — |
|---|
| Nitritesmg NO2/l | 0.07 | ≤ 0.5 | 0.028 |
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| Nitratesmg NO3/l | 35 | ≤ 50 | 10.5 |
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Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Magnesiummg/l | 2.7 | No limit | 2.7 |
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| Calciummg/l | 83.9 | No limit | 83.9 |
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Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 5.4 | ≤ 200 | 5.4 |
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| Antimonyμg/l | 0.1 | ≤ 5 | 0.1 |
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| Arsenicμg/l | 0.2 | ≤ 10 | 0.1 |
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| Cadmiumμg/l | 0.06 | ≤ 5 | 0.06 |
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| Chromiumμg/l | 0.8 | ≤ 50 | 0.8 |
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| Copperμg/l | 40 | ≤ 2,000 | 2 |
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| Ironμg/l | 6 | ≤ 200 | 6 |
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| Manganeseμg/l | 1.5 | ≤ 50 | 1.5 |
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| Leadμg/l | 2 | ≤ 10 | 0.1 |
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| Nickelμg/l | 1.5 | ≤ 20 | 1.5 |
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| Seleniumμg/l | 0.89 | ≤ 10 | 0.89 |
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| Sodiummg/l | 15.1 | ≤ 200 | 15.1 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneμg/l | 0.3 | ≤ 10 | 0.015 |
|---|
| Total Trihalomethanesμg/l | 3 | ≤ 100 | 0.15 |
|---|
Perfluorinated chemicals
Perfluorinated chemicals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total PFASug/L | Not reported | ≤ 0.1 | — |
|---|
| PFAS 4ng/l | Not reported | No limit | — |
|---|
| PFAS 21ng/l | Not reported | No limit | — |
|---|
Other
Other| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Ammoniamg/l | 0.03 | No limit | 0.009 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
472 of 472 tests within UK limits
