Tap water hardness in Nuevo Leon
We have published hardness data for 7 cities in Nuevo Leon. The median is 292 mg/L; the hardest water is in Ciudad Apodaca (292 mg/L), the softest in Santa Catarina (292 mg/L).
100 % of these cities have hard or very hard water (over 120 mg/L).
Mexico's NOM-127-SSA1-2021 sets a 500 mg/L CaCO₃ limit for total hardness in drinking water.
Cities in Nuevo Leon, hardest first
| mg/L | mg/L | ||
|---|---|---|---|
| Ciudad Apodaca | 292 | 292 | very hard |
| Ciudad Benito Juárez | 292 | 292 | very hard |
| Ciudad General Escobedo | 292 | 292 | very hard |
| Guadalupe | 292 | 292 | very hard |
| Monterrey | 292 | 292 | very hard |
| San Nicolás de los Garza | 292 | 292 | very hard |
| Santa Catarina | 292 | 292 | very hard |