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County Durham · County Durham
Northumbrian Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | 0.33 | 0.2 – 1 | 0.007 ▲ |
|---|
| Total Chlorinemg CL2/l | 0.42 | No limit | 0.084 |
|---|
General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | 210.6estimated | 80 – 459 | 210.6 |
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| pH | 7.61 | 6.5 – 9.5 | 7.61 |
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| TurbidityNTU | 0.25 | ≤ 4 | 0.025 |
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| ColorColor Units | 1.01 | ≤ 15 | 1.01 |
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| ConductivityμS / cm | 262.1 | ≤ 2,500 | 262.1 |
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| TDSmg/l | 167.7estimated | 0 – 1,199 | 167.7 |
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| OdorTON | 0.014 | ≤ 3 | 0.014 |
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Pathogens
Pathogens| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| ClostridiumUFC/100ml | 0 | ≤ 0 | 0 |
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| eColiUFC/100ml | 0 | ≤ 0 | 0 |
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| BacteriasNMP/100ml | 3 | ≤ 0 | 0.3 |
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| EnterococcusUFC/100ml | 0 | ≤ 0 | 0 |
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Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Fluoridemg F/l | 0.46 | ≤ 1.5 | 0.14 |
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| Mercuryμg Hg/l | Not reported | ≤ 1 | — |
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| Nitritesmg NO2/l | 0.006 | ≤ 0.5 | 0.002 |
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| Nitratesmg NO3/l | 5.49 | ≤ 50 | 1.65 |
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Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Chloridemg/l | 19.7 | ≤ 250 | 19.7 |
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Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 27.2 | ≤ 200 | 27.2 |
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| Antimonyμg/l | 0.18 | ≤ 5 | 0.18 |
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| Arsenicμg/l | 0.12 | ≤ 10 | 0.06 |
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| Cadmiumμg/l | 0.027 | ≤ 5 | 0.027 |
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| Chromiumμg/l | 0.69 | ≤ 50 | 0.69 |
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| Copperμg/l | 35.7 | ≤ 2,000 | 1.78 |
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| Ironμg/l | 15.5 | ≤ 200 | 15.5 |
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| Manganeseμg/l | 1.44 | ≤ 50 | 1.44 |
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| Leadμg/l | 0.29 | ≤ 10 | 0.014 |
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| Nickelμg/l | 1.14 | ≤ 20 | 1.14 |
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| Seleniumμg/l | 0.87 | ≤ 10 | 0.87 |
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| Sodiummg/l | 13.6 | ≤ 200 | 13.6 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trihalomethanesμg/l | 29 | ≤ 100 | 1.45 |
|---|
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 | 0.031 | No limit | 0.009 |
|---|
| Sulfatemg/l | 55.2 | No limit | 55.2 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
8947 of 8955 tests within UK limits
