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Colchester · Colchester
Essex & Suffolk Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | 0.05 ● (Near the limit) | 0.2 – 1 | 0.001 ▲ |
|---|
| Total Chlorinemg CL2/l | 0.96 | No limit | 0.19 |
|---|
General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | Not reported | 80 – 459 | — |
|---|
| pH | 7.63 | 6.5 – 9.5 | 7.63 |
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| TurbidityNTU | 0.11 | ≤ 4 | 0.011 |
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| ColorColor Units | 1.9 | ≤ 15 | 1.9 |
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| ConductivityμS / cm | 605 | ≤ 2,500 | 605 |
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| TDSmg/l | 387.2estimated | 0 – 1,199 | 387.2 |
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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 | 0 | ≤ 0 | 0 |
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| EnterococcusUFC/100ml | 0 | ≤ 0 | 0 |
|---|
Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Cyanide totalμg CN/l | 5.5 | ≤ 50 | 0.28 |
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| Fluoridemg F/l | 0.4 | ≤ 1.5 | 0.12 |
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| Mercuryμg Hg/l | 0.022 | ≤ 1 | 0.002 |
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| Nitritesmg NO2/l | 0.008 | ≤ 0.5 | 0.003 |
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| Nitratesmg NO3/l | 11.8 | ≤ 50 | 3.53 |
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Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Chloridemg/l | 81 | ≤ 250 | 81 |
|---|
Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 12 | ≤ 200 | 12 |
|---|
| Antimonyμg/l | 0.34 | ≤ 5 | 0.34 |
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| Arsenicμg/l | 1.35 | ≤ 10 | 0.68 |
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| Cadmiumμg/l | 0.018 | ≤ 5 | 0.018 |
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| Chromiumμg/l | 0.67 | ≤ 50 | 0.67 |
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| Copperμg/l | 68 | ≤ 2,000 | 3.4 |
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| Ironμg/l | 7.78 | ≤ 200 | 7.78 |
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| Manganeseμg/l | 0.63 | ≤ 50 | 0.63 |
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| Leadμg/l | 0.19 | ≤ 10 | 0.01 |
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| Nickelμg/l | 3.8 | ≤ 20 | 3.8 |
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| Seleniumμg/l | 0.83 | ≤ 10 | 0.83 |
|---|
| Sodiummg/l | 49 | ≤ 200 | 49 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneμg/l | 0 | ≤ 10 | 0 |
|---|
| Total Trihalomethanesμg/l | 23 | ≤ 100 | 1.15 |
|---|
Pesticides
Pesticides| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total pesticidesug/L | 0.008 | ≤ 0.5 | 0.008 |
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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 | — |
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| PFAS 21ng/l | Not reported | No limit | — |
|---|
Other
Other| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Ammoniamg/l | 0.26 | No limit | 0.077 |
|---|
| Sulfatemg/l | 75 | No limit | 75 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
188 of 188 tests within UK limits
