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Southampton · Southampton
Southern Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | 0.55 | 0.2 – 1 | 0.011 ▲ |
|---|
| Total Chlorinemg CL2/l | 0.62 | No limit | 0.12 |
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General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | 298.6 | 80 – 459 | 298.6 |
|---|
| pH | 7.41 | 6.5 – 9.5 | 7.41 |
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| TurbidityNTU | 0.17 | ≤ 4 | 0.017 |
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| ColorColor Units | 3.01 | ≤ 15 | 3.01 |
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| ConductivityμS / cm | 559.9 | ≤ 2,500 | 559.9 |
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| TDSmg/l | 358.3estimated | 0 – 1,199 | 358.3 |
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| OdorTON | 0 | ≤ 3 | 0 |
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Pathogens
Pathogens| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| ClostridiumUFC/100ml | 0 | ≤ 0 | 0 |
|---|
| eColiUFC/100ml | 0 | ≤ 0 | 0 |
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| BacteriasNMP/100ml | 1 | ≤ 0 | 0.1 |
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| EnterococcusUFC/100ml | 0 | ≤ 0 | 0 |
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Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Cyanide totalμg CN/l | 1.2 | ≤ 50 | 0.06 |
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| Fluoridemg F/l | 0.085 | ≤ 1.5 | 0.026 |
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| Mercuryμg Hg/l | 0.05 | ≤ 1 | 0.005 |
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| Nitritesmg NO2/l | Not reported | ≤ 0.5 | — |
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| Nitratesmg NO3/l | 35.2 | ≤ 50 | 10.5 |
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Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Magnesiummg/l | 2.13 | No limit | 2.13 |
|---|
| Calciummg/l | 115.8 | No limit | 115.8 |
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| Chloridemg/l | 30.6 | ≤ 250 | 30.6 |
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Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 11.7 | ≤ 200 | 11.7 |
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| Antimonyμg/l | 0.073 | ≤ 5 | 0.073 |
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| Arsenicμg/l | 0.2 | ≤ 10 | 0.099 |
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| Cadmiumμg/l | 0.026 | ≤ 5 | 0.026 |
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| Chromiumμg/l | 0.2 | ≤ 50 | 0.2 |
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| Copperμg/l | 122.2 | ≤ 2,000 | 6.11 |
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| Ironμg/l | 14 | ≤ 200 | 14 |
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| Manganeseμg/l | 0.73 | ≤ 50 | 0.73 |
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| Leadμg/l | 1.51 | ≤ 10 | 0.075 |
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| Nickelμg/l | 3.27 | ≤ 20 | 3.27 |
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| Seleniumμg/l | 0.41 | ≤ 10 | 0.41 |
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| Sodiummg/l | 11.7 | ≤ 200 | 11.7 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneμg/l | 0 | ≤ 10 | 0 |
|---|
| Total Trihalomethanesμg/l | 21.5 | ≤ 100 | 1.07 |
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Pesticides
Pesticides| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total pesticidesug/L | 0 | ≤ 0.5 | 0 |
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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 | — |
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Other
Other| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Ammoniamg/l | 0.012 | No limit | 0.003 |
|---|
| Sulfatemg/l | 21.8 | No limit | 21.8 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
3198 of 3201 tests within UK limits
