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Lewes · Lewes
Southern Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | 0.43 | 0.2 – 1 | 0.009 ▲ |
|---|
| Total Chlorinemg CL2/l | 0.48 | No limit | 0.096 |
|---|
General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | 249.7 | 80 – 459 | 249.7 |
|---|
| pH | 7.39 | 6.5 – 9.5 | 7.39 |
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| TurbidityNTU | 0.15 | ≤ 4 | 0.015 |
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| ColorColor Units | 3 | ≤ 15 | 3 |
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| OdorTON | 0 | ≤ 3 | 0 |
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Pathogens
Pathogens| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| eColiUFC/100ml | 0 | ≤ 0 | 0 |
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| BacteriasNMP/100ml | 0 | ≤ 0 | 0 |
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| EnterococcusUFC/100ml | 0 | ≤ 0 | 0 |
|---|
Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Mercuryμg Hg/l | Not reported | ≤ 1 | — |
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| Nitritesmg NO2/l | Not reported | ≤ 0.5 | — |
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| Nitratesmg NO3/l | 36 | ≤ 50 | 10.8 |
|---|
Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Magnesiummg/l | 2.25 | No limit | 2.25 |
|---|
| Calciummg/l | 96.6 | No limit | 96.6 |
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Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 12 | ≤ 200 | 12 |
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| Antimonyμg/l | 0.05 | ≤ 5 | 0.05 |
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| Arsenicμg/l | 0.16 | ≤ 10 | 0.079 |
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| Cadmiumμg/l | 0.02 | ≤ 5 | 0.02 |
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| Chromiumμg/l | 0.24 | ≤ 50 | 0.24 |
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| Copperμg/l | 67.1 | ≤ 2,000 | 3.35 |
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| Ironμg/l | 4.75 | ≤ 200 | 4.75 |
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| Manganeseμg/l | 0.67 | ≤ 50 | 0.67 |
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| Leadμg/l | 0.38 | ≤ 10 | 0.019 |
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| Nickelμg/l | 0.95 | ≤ 20 | 0.95 |
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| Seleniumμg/l | 0.35 | ≤ 10 | 0.35 |
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| Sodiummg/l | 15.8 | ≤ 200 | 15.8 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneμg/l | 0.44 | ≤ 10 | 0.022 |
|---|
| Total Trihalomethanesμg/l | 10.4 | ≤ 100 | 0.52 |
|---|
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 | 0.01 | No limit | 0.003 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
434 of 434 tests within UK limits
