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Merthyr Tydfil · Merthyr Tydfil
Welsh Water
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg CL2/l | 0.61 | 0.2 – 1 | 0.012 ▲ |
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| Total Chlorinemg CL2/l | 0.68 | No limit | 0.14 |
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General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg CaCO3/l | 41.1 ● (Near the limit)estimated | 80 – 459 | 41.1 ● |
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| pH | 7.54 | 6.5 – 9.5 | 7.54 |
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| TurbidityNTU | 0.27 | ≤ 4 | 0.027 |
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| ColorColor Units | 4.6 | ≤ 15 | 4.6 |
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| ConductivityμS / cm | 98.9 | ≤ 2,500 | 98.9 |
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| TDSmg/l | 63.3estimated | 0 – 1,199 | 63.3 |
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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 |
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Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Cyanide totalμg CN/l | 4.6 | ≤ 50 | 0.23 |
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| Fluoridemg F/l | 0.11 | ≤ 1.5 | 0.033 |
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| Mercuryμg Hg/l | 0.042 | ≤ 1 | 0.004 |
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| Nitritesmg NO2/l | 0.013 | ≤ 0.5 | 0.005 |
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| Nitratesmg NO3/l | 2.61 | ≤ 50 | 0.78 |
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Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Chloridemg/l | 5.5 | ≤ 250 | 5.5 |
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Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumμg/l | 8.75 | ≤ 200 | 8.75 |
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| Antimonyμg/l | 0.064 | ≤ 5 | 0.064 |
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| Arsenicμg/l | 0.2 | ≤ 10 | 0.1 |
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| Cadmiumμg/l | 0.025 | ≤ 5 | 0.025 |
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| Chromiumμg/l | 0.48 | ≤ 50 | 0.48 |
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| Copperμg/l | 58.7 | ≤ 2,000 | 2.93 |
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| Ironμg/l | 19.8 | ≤ 200 | 19.8 |
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| Manganeseμg/l | 1.2 | ≤ 50 | 1.2 |
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| Leadμg/l | 0.16 | ≤ 10 | 0.008 |
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| Nickelμg/l | 0.59 | ≤ 20 | 0.59 |
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| Seleniumμg/l | 0.23 | ≤ 10 | 0.23 |
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| Sodiummg/l | 4.23 | ≤ 200 | 4.23 |
|---|
Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneμg/l | 0 | ≤ 10 | 0 |
|---|
| Total Trihalomethanesμg/l | 26 | ≤ 100 | 1.3 |
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Pesticides
Pesticides| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total pesticidesug/L | 0.001 | ≤ 0.5 | 0.001 |
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Perfluorinated chemicals
Perfluorinated chemicals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total PFASug/L | Not reported | ≤ 0.1 | — |
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| PFAS 4ng/l | Not reported | No limit | — |
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| PFAS 21ng/l | Not reported | No limit | — |
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Other
Other| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Ammoniamg/l | 0.025 | No limit | 0.008 |
|---|
| Sulfatemg/l | 23 | No limit | 23 |
|---|
Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.
739 of 739 tests within UK limits
