Water hardness in the United States and Mexico, state by state
Official measurements for all 50 US states and Mexico's estados, in gpg and ppm. Click your state for the local value, what it means for your appliances, and the salt-free fix.
United States
- Delaware3 gpg
- Florida19 gpg
- Georgia6.4 gpg
- Hawaii4.9 gpg
- Idaho10.8 gpg
- Illinois20 gpg
- Indiana17.7 gpg
- Iowa20.5 gpg
- Kansas20.2 gpg
- Kentucky9.8 gpg
- Louisiana6.5 gpg
- Maine3.2 gpg
- Maryland4.2 gpg
- Massachusetts3.9 gpg
- Michigan20.2 gpg
- Minnesota18 gpg
- Mississippi3.1 gpg
- Missouri23.5 gpg
- Montana16.7 gpg
- Nebraska16.8 gpg
- Nevada11.9 gpg
- New Hampshire3.2 gpg
- New Jersey4 gpg
- New Mexico18.3 gpg
- New York9.1 gpg
- North Carolina3.2 gpg
- North Dakota17.4 gpg
- Ohio21.1 gpg
- Oklahoma16.6 gpg
- Oregon4.7 gpg
- Pennsylvania7.3 gpg
- Rhode Island0.9 gpg
- South Carolina5.3 gpg
- South Dakota32.6 gpg
- Tennessee2.5 gpg
- Texas14.7 gpg
- Utah18.2 gpg
- Vermont2.4 gpg
- Virginia6.8 gpg
- Washington11.1 gpg
- West Virginia8.7 gpg
- Wisconsin18 gpg
- Wyoming8.2 gpg
- Alabama2 gpg
- Alaska4.2 gpg
- Arizona15.9 gpg
- Arkansas8.4 gpg
- California9.5 gpg
- Colorado11.6 gpg
- Connecticut2.4 gpg
- Aguascalientes140 ppm
- Baja California660 ppm
- Baja California Sur297 ppm
- Campeche621 ppm
- Chihuahua154 ppm
- Chiapas296 ppm
- Ciudad de México164 ppm
- Coahuila336 ppm
- Colima290 ppm
- Durango270 ppm
- Guerrero330 ppm
- Guanajuato140 ppm
- Hidalgo374 ppm
- Jalisco106 ppm
- Estado de México240 ppm
- Michoacán122 ppm
- Morelos226 ppm
- Nayarit95 ppm
- Nuevo León374 ppm
- Oaxaca323 ppm
- Puebla196 ppm
- Querétaro114 ppm
- Quintana Roo384 ppm
- Sinaloa262 ppm
- San Luis Potosí86 ppm
- Sonora300 ppm
- Tabasco283 ppm
- Tamaulipas539 ppm
- Tlaxcala147 ppm
- Veracruz271 ppm
- Yucatán436 ppm
- Zacatecas113 ppm