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RED-LERMA · Lerma
AQUONA, S.A.
Water safety
Water safety| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Free Chlorinemg/L | 0.3Sampled Sept 2026 | 0.2 – 1 | 0.006 ▲ |
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| Chloraminemg/L | 0Sampled May 2026 | ≤ 4 | 0 |
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General
General| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Hardnessmg/L | 257Sampled Aug 2026 | 80 – 459 | 257 |
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| pHUnidades pH | 7.8 | 6.5 – 9.5 | 7.8 |
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| TurbidityUNF | 0.2 | ≤ 4 | 0.02 |
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| Colormg Pt-Co/L | 0 | ≤ 15 | 0 |
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| ConductivityµS/cm a 20ºC | 449Sampled Sept 2026 | ≤ 2,500 | 449 |
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| TDSmg/l | 287.4Sampled Sept 2026estimated | 0 – 1,199 | 287.4 |
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| OdorIn. Dil. | 0 | ≤ 3 | 0 |
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| LSIUnidades pH | 0.6Sampled May 2026 | No limit | 0.6 |
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| Oxidationmg O2 /L | 0.4Sampled May 2026 | ≤ 5 | 0.4 |
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Pathogens
Pathogens| Parameter | Unfiltered tap water | Allowed range | Filtered |
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| ClostridiumUFC/100 ml | 0Sampled May 2026 | ≤ 0 | 0 |
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| eColiUFC/100 ml | 0Sampled Sept 2026 | ≤ 0 | 0 |
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| BacteriasUFC/100 ml | 0Sampled Sept 2026 | ≤ 0 | 0 |
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| EnterococcusUFC/100 ml | 0Sampled Sept 2026 | ≤ 0 | 0 |
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Chemical parameters
Chemical parameters| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Cyanide totalµg/L | 0Sampled May 2026 | ≤ 50 | 0 |
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| Fluoridemg/L | 0Sampled May 2026 | ≤ 1.5 | 0 |
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| Mercuryµg/L | 0Sampled May 2026 | ≤ 1 | 0 |
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| Nitritesmg/L | 0Sampled May 2026 | ≤ 0.1 | 0 |
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| Nitratesmg/L | 10Sampled May 2026 | ≤ 50 | 3 |
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Minerals
Minerals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Magnesiummg/L | 8Sampled Aug 2026 | No limit | 8 |
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| Calciummg/L | 89Sampled Aug 2026 | No limit | 89 |
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| Potassiummg/L | 0Sampled Aug 2026 | No limit | 0 |
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| Chloridemg/L | 5Sampled May 2026 | ≤ 250 | 5 |
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Metals
Metals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Aluminiumµg/L | 0Sampled May 2026 | ≤ 200 | 0 |
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| Antimonyµg/L | 0Sampled May 2026 | ≤ 5 | 0 |
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| Arsenicµg/L | 0Sampled May 2026 | ≤ 10 | 0 |
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| Cadmiumµg/L | 0Sampled May 2026 | ≤ 5 | 0 |
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| Chromiumµg/L | 0Sampled May 2026 | ≤ 50 | 0 |
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| Coppermg/L | 0Sampled May 2026 | ≤ 2,000 | 0 |
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| Ironµg/L | 0Sampled May 2026 | ≤ 200 | 0 |
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| Manganeseµg/L | 0Sampled May 2026 | ≤ 50 | 0 |
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| Leadµg/L | 0Sampled May 2026 | ≤ 10 | 0 |
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| Nickelµg/L | 0Sampled May 2026 | ≤ 20 | 0 |
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| Seleniumµg/L | 0Sampled May 2026 | ≤ 10 | 0 |
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| Sodiummg/L | 3Sampled May 2026 | ≤ 200 | 3 |
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Chlorine by-products
Chlorine by-products| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total Trichloroethyleneµg/L | 0Sampled May 2026 | ≤ 10 | 0 |
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| Trichloroethyleneµg/L | 0Sampled May 2026 | No limit | 0 |
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| Tetrachloroethyleneµg/L | 0Sampled May 2026 | No limit | 0 |
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| Total Trihalomethanesµg/L | 2Sampled May 2026 | ≤ 100 | 0.1 |
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Haloacetic acids
Haloacetic acids| Parameter | Unfiltered tap water | Allowed range | Filtered |
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| Total haloacetic acidsµg/L | 0Sampled May 2026 | ≤ 60 | 0 |
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Pesticides
Pesticides| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| Total pesticidesµg/L | 0Sampled May 2026 | ≤ 0.5 | 0 |
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Perfluorinated chemicals
Perfluorinated chemicals| Parameter | Unfiltered tap water | Allowed range | Filtered |
|---|
| PFOAµg/L | 0Sampled May 2026 | No limit | 0 |
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| PFOSµg/L | 0Sampled May 2026 | No limit | 0 |
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| PFNAµg/L | 0Sampled May 2026 | No limit | 0 |
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| Total PFASµg/L | 0Sampled May 2026 | ≤ 0.1 | 0 |
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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 | 0Sampled Sept 2026 | No limit | 0 |
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| Sulfatemg/L | 10Sampled May 2026 | No limit | 10 |
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| Uraniumµg/L | 0Sampled May 2026 | No limit | 0 |
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Data collected from the water supplier for your area. Quality ranges are based on WHO, EU and Spanish guidelines.
