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Isles of Scilly · Isles of Scilly
South West Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | 0.066 ● (Near the limit) | 0.2 – 1 | 0.001 ▲ |
|---|
| Total Chlorinemg CL2/l | 0.12 | No limit | 0.024 |
|---|
General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | 64 ● (Near the limit)estimated | 80 – 459 | 64 ● |
|---|
| pH | 7.28 | 6.5 – 9.5 | 7.28 |
|---|
| TurbidityNTU | 0.44 | ≤ 4 | 0.044 |
|---|
| ColorColor Units | 4.79 | ≤ 15 | 4.79 |
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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 |
|---|
| BacteriasNMP/100ml | 0 | ≤ 0 | 0 |
|---|
| EnterococcusUFC/100ml | 0 | ≤ 0 | 0 |
|---|
Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Mercuryμg Hg/l | Not reported | ≤ 1 | — |
|---|
| Nitritesmg NO2/l | Not reported | ≤ 0.5 | — |
|---|
| Nitratesmg NO3/l | 17.2 | ≤ 50 | 5.16 |
|---|
Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 26.6 | ≤ 200 | 26.6 |
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| Antimonyμg/l | 0.14 | ≤ 5 | 0.14 |
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| Arsenicμg/l | 2.55 | ≤ 10 | 1.28 |
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| Cadmiumμg/l | 0.077 | ≤ 5 | 0.077 |
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| Chromiumμg/l | 0.8 | ≤ 50 | 0.8 |
|---|
| Copperμg/l | 46.1 | ≤ 2,000 | 2.3 |
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| Ironμg/l | 8.46 | ≤ 200 | 8.46 |
|---|
| Manganeseμg/l | 5.33 | ≤ 50 | 5.33 |
|---|
| Leadμg/l | 0.58 | ≤ 10 | 0.029 |
|---|
| Nickelμg/l | 3.92 | ≤ 20 | 3.92 |
|---|
| Seleniumμg/l | 1.54 | ≤ 10 | 1.54 |
|---|
| Sodiummg/l | 73.8 | ≤ 200 | 73.8 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneμg/l | 0 | ≤ 10 | 0 |
|---|
| Total Trihalomethanesμg/l | 34.2 | ≤ 100 | 1.71 |
|---|
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 | 0.04 | No limit | 0.012 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
443 of 444 tests within UK limits
