Water Hardness California
The California Water Hardness data presented in this chart has all been verified by Aquatell directly from primary sources. Typically, this means we found the data on municipal water reports or we emailed or talked with municipal officials from the public utilities department.
If the water hardness data from your city is missing from this list please contact us and let us know. We can typically track down the info and add it to our chart in about a week.
If you're looking to reduce your water hardness level, have a look at a professional-grade water softener. Here are the water hardness values for the cities and towns in California:| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Acton | 298 | 17.4 |
| Alameda | 156 | 9.1 |
| Alhambra | 184 | 10.8 |
| Alvarado | 214 | 12.5 |
| Alviso | 51 | 3.0 |
| Anaheim | 300 | 17.5 |
| Antelope Valley Northeast Los Angeles County | 93 | 5.4 |
| Antioch | 57 | 3.3 |
| Apple Valley | 150 | 8.8 |
| Arcadia | 195 | 11.4 |
| Arvin (Tejon-Castac) | 102 | 6.0 |
| Azusa | 165 | 9.7 |
| Bakersfeild (North Garden) | 79.2 | 4.6 |
| Bakersfield | 74.6 | 4.4 |
| Baldwin Park | 190 | 11.1 |
| Bellflower | 237 | 13.9 |
| Berkeley | 35 | 2.0 |
| Brentwood | 368 | 21.5 |
| Buena Park | 240 | 14.0 |
| Burbank | 259 | 15.1 |
| Camarillo | 89 | 5.2 |
| Carlsbad | 228 | 13.3 |
| Ceres | 174.2 | 10.2 |
| Cerritos | 180 | 10.5 |
| Chico | 126 | 7.4 |
| Chino | 258 | 15.1 |
| Chino Hills | 147 | 8.6 |
| Chula Vista | 286.5 | 16.8 |
| Citrus Heights | 130 | 7.6 |
| Clovis | 69.5 | 4.1 |
| Coachella | 140 | 8 |
| Colton | 181.2 | 10.6 |
| Compton | 229.4 | 13.4 |
| Concord | 77.7 | 4.5 |
| Corona | 206 | 12.0 |
| Costa Mesa | 119 | 7.0 |
| Covina | 140 | 8.2 |
| Coyote Valley | 241 | 14.1 |
| Cresent City | 59 | 3 |
| Daly City | 47 | 2.7 |
| Davis | 73.8 | 4.3 |
| Delano | 44 | 2.6 |
| Desert View Highlands | 114.7 | 6.7 |
| Downey | 14.4 | 0.8 |
| Edenvale | 304 | 17.8 |
| El Cajon | 166 | 9.7 |
| El Monte | 270 | 15.8 |
| Elk Grove | 90 | 5.3 |
| Encinitas | 247 | 14.4 |
| Escondido | 170 | 9.9 |
| Evergreen | 98 | 5.7 |
| Fairfield | 122 | 7.1 |
| Folsom | 22.3 | 1.3 |
| Fontana | 113.5 | 6.6 |
| Fountain Valley | 240 | 14.0 |
| Fremont | 6 | 0.4 |
| Fresno | 123 | 7.2 |
| Fullerton | 19 | 1.1 |
| Garden Grove | 119 | 7.0 |
| Gardena | 200 | 11.7 |
| Gilroy | 263 | 15.4 |
| Glendale | 12 | 0.7 |
| Hanford | 11.4 | 0.7 |
| Hawthorne | 200 | 11.7 |
| Hayward | 44 | 2.6 |
| Hemet | 257.7 | 15.1 |
| Hesperia | 68.7 | 4.0 |
| Huntington Beach | 184 | 10.8 |
| Huntington Park | 171.5 | 10.0 |
| Indio | 110.7 | 6.5 |
| Inglewood | 231.5 | 13.5 |
| Irvine | 195.3 | 11.4 |
| Jurupa Valley | 185 | 10.8 |
| Kagel Canyon | 84 | 5.0 |
| La Habra | 287 | 16.8 |
| Laguna Niguel | 240 | 14.0 |
| Lake Forest | 240 | 14.0 |
| Lake Los Angeles | 118 | 6.9 |
| Lakewood | 158 | 9.2 |
| Lancaster | 114.7 | 6.7 |
| Littlerock | 154.7 | 9.0 |
| Livermore | 261 | 15.3 |
| Lodi | 137 | 8.0 |
| Long Beach | 100.5 | 5.9 |
| Los Angeles | 127 | 7 |
| Lynwood | 245.2 | 14.3 |
| Madera | 76.4 | 4.5 |
| Malibu | 109 | 6.4 |
| Manteca | 175 | 10.2 |
| Marina Del Rey | 109 | 6.4 |
| Mecca | 393 | 23 |
| Menifee | 144 | 8.4 |
| Mendocino | 101 | 5 |
| Merced | 126 | 7.4 |
| Milpitas | 91 | 5.3 |
| Miramar | 179 | 10.5 |
| Mission Viejo | 240 | 14.0 |
| Modesto | 194 | 11.3 |
| Monterey Park | 220 | 12.9 |
| Moreno Valley | 208 | 12.2 |
| Mountain View | 47 | 2.7 |
| Murrieta | 120.8 | 7.1 |
| Napa | 118 | 6.9 |
| Newark | 4 | 0.2 |
| Newport Beach | 240 | 14.0 |
| North San Jose | 51 | 3.0 |
| Norwalk | 330 | 19.3 |
| Oakland | 140 | 8.2 |
| Oceanside | 141 | 8.2 |
| Ontario | 123 | 7.2 |
| Orange | 16 | 0.9 |
| Otay | 214 | 12.5 |
| Oxnard | 322 | 18.8 |
| Palmdale | 119 | 7.0 |
| Palo Alto | 47 | 2.7 |
| Paramount | 171.5 | 10.0 |
| Pasadena | 12.9 | 0.8 |
| Pearblossom | 154.7 | 9.0 |
| Perris | 92 | 5.4 |
| Petaluma | 92.3 | 5.4 |
| Pico Rivera | 241 | 14.1 |
| Pittsburg | 63 | 3.7 |
| Pleasanton | 89 - 460 | 5.2 - 27.0 |
| Pomona | 206.3 | 12.1 |
| Porterville | 143.6 | 8.4 |
| Poway | 204 | 11.9 |
| Rancho Cordova | 80 | 4.7 |
| Rancho Cucamonga | 151 | 8.8 |
| Rancho Santa Margarita | 240 | 14.0 |
| Redding | 31 | 1.8 |
| Redlands | 149 | 8.7 |
| Redondo Beach | 316 | 18.5 |
| Redwood City | 47 | 2.7 |
| Rialto | 160 | 9.4 |
| Richmond | 78 | 4.6 |
| Riverside | 188 | 11.0 |
| Rock Creek | 305 | 17.8 |
| Roseville | 80.5 | 4.7 |
| Sacramento | 102 | 6.0 |
| Salinas | 315 | 18.4 |
| San Bernardino | 251.6 | 14.7 |
| San Clemente | 240 | 14.0 |
| San Diego | 241 | 15.0 |
| San Francisco | 51 | 3.0 |
| San Jose | 132 | 8.0 |
| San Leandro | 78 | 4.6 |
| San Luis Obispo | 171 | 10.0 |
| San Marcos | 54 | 3.2 |
| San Mateo | 47 | 2.7 |
| San Ramon | 368 | 21.5 |
| Santa Ana | 180.5 | 10.6 |
| Santa Barbara | 330 | 19.3 |
| Santa Clara | 97.5 | 5.7 |
| Santa Clarita | 267.8 | 15.7 |
| Santa Cruz | 175 | 10.2 |
| Santa Maria | 146 | 8.5 |
| Santa Monica | 162 | 9.5 |
| Santa Rosa | 145.5 | 8.5 |
| Simi Valley | 182.3 | 10.7 |
| South Gate | 220.9 | 12.9 |
| South San Francisco | 47 | 2.7 |
| Stockton | 25.5 | 1.5 |
| Sun Village | 154.7 | 9.0 |
| Sunnyvale | 153 | 8.9 |
| Temecula | 120.8 | 7.1 |
| Thousand Oaks | 119 | 7.0 |
| Torrance | 320.5 | 18.7 |
| Tracy | 283 | 16.6 |
| Tulare | 25.4 | 1.5 |
| Turlock | 114.3 | 6.7 |
| Tustin | 255.5 | 14.9 |
| Union City | 11 | 0.6 |
| Union City | 89 | 5.2 |
| Upland | 150.2 | 8.8 |
| Vacaville | 183 | 10.7 |
| Val Verde | 267.8 | 15.7 |
| Valenica | 268 | 16 |
| Vallejo | 129 | 7.5 |
| Ventura | 472.7 | 27.6 |
| Victorville | 30.7 | 1.8 |
| Visalia | 81 | 4.7 |
| Vista | 161 | 9.4 |
| Walnut Creek | 78 | 4.6 |
| Watsonville | 281 | 16.4 |
| West Corvina | 150 | 8.8 |
| West Sacramento | 65 | 3.8 |
| Westminster | 240 | 14.0 |
| Whittier | 290 | 17.0 |
| Woodland | 63 | 3.7 |
| Yorba Linda | 240 | 14.0 |
| Yuba City | 58 | 3.4 |