Water hardness in California and city hard water information (2023)

Anaheim

92804 | 92805 | 92801 | 92802 | 92806 | 92807 | 92808

127 PPM (mg/L) or 7 gpg

Bakersfield

93307 | 93306 | 93312 | 93309 | 93308 | 93313 | 93304 | 93311 | 93305 | 93314 | 93301

80 PPM(mg/L) or 5 gpg

Bellflower

90706 | 90707

230 PPM(mg/L) or 13 gpg

Buena Park

90620 | 90621 | 90622 | 90623 | 90624

236 PPM(mg/L) or 14 gpg

Burbank

91501 | 91502 | 91504 | 91505 | 91506

271 PPM (mg/L) or 16 gpg

Chino

91710 | 91708

188 PPM (mg/L) or 11 gpg

Chula Vista

91911 | 91910 | 91913 | 91915 | 91914

194 PPM(mg/L) or 11 gpg

Cresent City

95531

59 PPM (mg/L) or 3 gpg

Corona

92882 | 92880 | 92879 | 92883 | 92881

353 PPM(mg/L) or 21 gpg

Coachella

92236

140 PPM(mg/L) or 8 gpg

Compton

90059 | 90220 | 90221 | 90222 | 90223 | 90224

219 PPM(mg/L) or 13 gpg

El Monte

91732 | 91731

270 PPM (mg/L) or 16 gpg

Fontana

92355 | 92336 | 92337

104 PPM(mg/L) or 6 gpg

Fountain Valley

92728

199 PPM(mg/L) or 12 gpg

Fremont

94536 | 94538 | 94539 | 94555

158 PPM(mg/L) or 9 gpg

Fresno

93722 | 93727 | 93720 | 93702 | 93726 | 93706 | 93711 | 93705 | 93703 | 93710 | 93704 | 93725 | 93728 | 93723 | 93730 | 93701 | 93721 | 93650

123 PPM (mg/L) or 7 gpg

Fountain Valley

92708

200 PPM (mg/L) or 12 gpg

Fullerton

(Video) How Can I Check Water Hardness | Hard Water Tests Orange County CA

92833 | 92831 | 92832 | 92835

254 PPM(mg/L) or 15 gpg

Garden Grove

92840 | 92843 | 92841 | 92844 | 92845

119 PPM(mg/L) or 7 gpg

Gilroy

95020

236 PPM (mg/L) or 14 gpg

Glendale

91205 | 91206 | 91201 | 91202 | 91204 | 91208 | 91203 | 91207 | 91210

259 PPM(mg/L) or 15 gpg

Hemet

92544 | 92545 | 92543

192 PPM (mg/L) or 11 gpg

Huntington Beach

92647 | 92646 | 92648 | 92649

240 PPM(mg/L) or 14 gpg

Inglewood

90301 | 90302 | 90303 | 90304 | 90305 | 90306 | 90307 | 90308 | 90309 | 90311 | 90312

293 PPM(mg/L) or 17 gpg

Irvine

92620 | 92618 | 92612 | 92604 | 92614 | 92602 | 92606 | 92603 | 92617

152 PPM(mg/L) or 9 gpg

Laguna Niguel

92607 | 92653 | 92677

273 PPM(mg/L) or 16 gpg

La Habra

90631

255 PPM (mg/L) 15 gpg

Lake Forest

92609 | 92610 | 92630 | 92679 | 92691

274 PPM(mg/L) or 16 gpg

Livermore

94550 | 94551

100 PPM (mg/L) or 6 gpg

Long Beach

90805 | 90813 | 90806 | 90815 | 90802 | 90804 | 90808 | 90810 | 90803 | 90807 | 90814 | 90822 | 90831

137 PPM(mg/L) or 8 gpg

Los Angeles

90011 | 90044 | 90003 | 90026 | 90019 | 90022 | 90037 | 90042 | 90006 | 90004 | 90066 | 90001 | 90034 | 90018 | 90002 | 90063 | 90046 | 90024 | 90057 | 90047 | 90025 | 90065 | 90032 | 90033 | 90023 | 90016 | 90059 | 90027 | 90043 | 90007 | 90045 | 90005 | 90020 | 90031 | 90036 | 90029 | 90049 | 90012 | 90062 | 90008 | 90028 | 90039 | 90041 | 90035 | 90038 | 90061 | 90017 | 90064 | 90048 | 90015 | 90068 | 90040 | 90013 | 90077 | 90014 | 90056 | 90089 | 90010 | 90021 | 90058 | 90067 | 90073 | 90071 | 90079 | 90095

127 PPM(mg/L) or 7 gpg

Lynwood

90262

262 PPM (mg/L) or 15 gpg

Mecca

92254

393 PPM (mg/L) or 23 gpg

Menifee

92584 | 92585 | 92586 | 92587

93 PPM (mg/L) or 5 gpg

Mendocino

95460

(Video) Is City Water Hard Water | Hard Water Orange County CA

101 PPM (mg/L) or 5 gpg

Mission Viejo

92653 | 92690 | 92691 | 92692

274 PPM(mg/L) or 16 gpg

Modesto

95355 | 95350| 95351 | 95358 | 95356 | 95354 | 95357

224 PPM(mg/L) or 13 gpg

Newport Beach

92603 | 92617 | 92625 | 92651 | 92657 | 92658 | 92659 | 92660 | 92661 | 92662 | 92663

274 PPM(mg/L) or 16 gpg

Norwalk

90650 | 90651 | 90652 | 90670

267 PPM(mg/L) or 16 gpg

Oakland

94601 | 94602 | 94603 | 94605 | 94606 | 94607 | 94609 | 94610 | 94611 | 94612 | 94613 | 94618 | 94619 | 94621

140 PPM (mg/L) or 8 gpg

Oceanside

92057 | 92056 | 92058 | 92054

168 PPM(mg/L) or 10 gpg

Orange

92867 | 92869 | 92868 | 92865 | 92866

108 PPM(mg/L) or 6 gpg

Oxnard

93033 |93030|93036 | 93035

285 PPM(mg/L) or 17 gpg

Pasadena

91104 |91107 | 91103 | 91106 | 91101 | 91105

255 PPM(mg/L) or 15 gpg

Pico Rivera

90660

241 PPM (mg/L) or 14 gpg

Rancho Santa Margarita

92679 | 92688 | 92692

274 PPM(mg/L) or 16 gpg

Redding

96003 |96001|96002 | 96049

31 PPM(mg/L) or 2 gpg

Redondo Beach

90277 | 90278

370 PPM(mg/L) or 22 gpg

Riveside

92503 | 92504 | 92507 | 92505 | 92506 | 92508 | 92501

71 PPM (mg/L) or 4 gpg

Roseville

95661 | 95678 | 95747

191 PPM (mg/L) 11 gpg

Sacramento

95823 | 95828 | 95822 | 95831 | 95833 | 95835 | 95838 | 95826 | 95825 | 95820 | 95821 | 95842 | 95824 | 95834 | 95829 | 95815 | 95864 | 95818 | 95827 | 95841 | 95819 | 95816 | 95817 | 95832 | 95814 | 95811 | 95830 | 95837 | 94574

150 PPM(mg/L) or 9 gpg

Salinas

93906 | 93905 | 93901 | 93907 | 93908

160 PPM(mg/L) or 9 gpg

San Bernardino

(Video) Is Your WATER SOFTENER WORKING? How to Test for WATER HARDNESS

92407 | 92404 | 92410 | 92405 | 92411 | 92408 | 92401

249 PPM (mg/L) 15 gpg

San Clemente

92672 | 92673 | 92674

274 PPM(mg/L) or 16 gpg

San Diego

92154 | 92126 | 92105 | 92114 | 92115 | 92117 | 92113 | 92130 | 92129 | 92128 | 92111 | 92127 | 92122 | 92109 | 92104 | 92102 | 92101 | 92139 | 92103 | 92131 | 92116 | 92124 | 92123 | 92107 | 92110 | 92120 | 92119 | 92108 | 92106 | 92121 | 92140 | 92145 | 92135 | 92147 | 92155 | 92134 | 92132

241 PPM (mg/L) or 15 gpg

San Francisco

94112 | 94110 | 94122 | 94109 | 94116 | 94117 | 94121 | 94134 | 94118 | 94124 | 94115 | 94114 | 94132 | 94102 | 94131 | 94107 | 94103 | 94133 | 94123 | 94127 | 94108 | 94105 | 94158 | 94129 | 94111 | 94130 | 94104 | 94128

47 PPM (mg/L) or 3 gpg

San Jose

95123 | 95127 | 95111 | 95112 | 95122 | 95116 | 95125 | 95124 | 95148 | 95136 | 95132 | 95129 | 95121 | 95120 | 95128 | 95126 | 95118 | 95131 | 95117 | 95133 | 95134 | 95135 | 95138 | 95110 | 95130 | 95119 | 95139 | 95113

132 PPM (mg/L) or 8 gpg

Santa Barbara

93101 | 93105 | 93103 | 93111 | 93110 | 93109 | 93108

391 PPM (mg/L) or 23 gpg

Santa Clarita

91350 | 91390

271 PPM (mg/L) or 16 gpg

Santa Maria

93453 | 93458 | 93455 | 93454

235 PPM (mg/L) or 14 gpg

Santa Monica

90405 | 90403 | 90404 | 90402 | 90401

114 PPM (mg/L) or 7 gpg

Stockton

95206 | 95207 | 95209 | 95210 | 95205 | 95219 | 95204 | 95212 | 95215 | 95203 | 95202 | 95211

194 PPM (mg/L) or 14gpg

Sunnyvale

94087 | 94086 | 94085 | 94089

300 PPM (mg/L) or 17 gpg

Temecula

92592 | 92591 | 92590

152 PPM (mg/L) or 9 gpg

Torrance

90248 | 90277 | 90278 | 90501 | 90503 | 90504 | 90505 | 90506 | 90507 | 90508 | 90509 | 90510

427 PPM (mg/L) or 25 gpg

Tracy

95376 | 95377 | 95391 | 95304

143 PPM (mg/L) or 8 gpg

Turlock

95380 | 95382

115 PPM (mg/L) or 7 gpg

Tustin

92780 | 92782

312 PPM (mg/L) or 18 gpg

Union City

94587

89 PPM (mg/L) or 5 gpg

Upland

91784 | 91786

(Video) Water Hardness In America

150 PPM (mg/L) or 9 gpg

Vacaville

95687 | 95688

183 PPM (mg/L) or 11 gpg

Valencia

91354 | 91355

268 PPM (mg/L) or 16 gpg

Vallejo

94589 | 94590 | 94591

129 PPM (mg/L) or 8 gpg

Ventura

93001 | 93003 | 93004

666 PPM (mg/L) or 39 gpg

Victorville

92392 | 92394 | 92395

31 PPM (mg/L) or 2 gpg

Visalia

93277 | 93291 | 93292

81 PPM (mg/L) or 5 gpg

Vista

92081 | 92083 | 92084

161 PPM (mg/L) or 9 gpg

Walnut Creek

94595 | 94596 | 94597 | 94598

78 PPM (mg/L) or 5 gpg

Watsonville

95076

252 PPM (mg/L) or15 gpg

West Corvina

91790 | 91791

150 PPM (mg/L) or 9 gpg

West Sacramento

95605 | 95691

65PPM (mg/L) or4gpg

Westminster

92683

239PPM (mg/L) or 14 gpg

Whittier

90601 | 90602 | 90603 | 90604 | 90605 | 90606

260 PPM (mg/L) or 15 gpg

Woodland

95695 | 95776

63 PPM (mg/L) or 4 gpg

Yorba Linda

92808 | 92885 | 92886 | 92887

274 PPM (mg/L) or 16 gpg

Yuba City

95991 | 95993

58 PPM (mg/L) or 3 gpgWater hardness in California and city hard water information (1)

Videos

1. How to Test for Hard Water in Your Home
(HomeWater101)
2. What is HARD WATER
(Gary the Water Guy)
3. WHAT SHOULD My WATER SOFTENER HARDNESS be Set At?
(Gary the Water Guy)
4. How To Check if I Have Hard Water | Water Hardness
(Fort Knox Co.)
5. How to Check Your Home's Water Hardness
(Reliant Plumbing)
6. How Hard Water Ruins Everything (Benefits of a Whole House Water Softener)
(Quick Water Heater & Filtration Company)
Top Articles
Latest Posts
Article information

Author: Nicola Considine CPA

Last Updated: 04/28/2023

Views: 5843

Rating: 4.9 / 5 (69 voted)

Reviews: 84% of readers found this page helpful

Author information

Name: Nicola Considine CPA

Birthday: 1993-02-26

Address: 3809 Clinton Inlet, East Aleisha, UT 46318-2392

Phone: +2681424145499

Job: Government Technician

Hobby: Calligraphy, Lego building, Worldbuilding, Shooting, Bird watching, Shopping, Cooking

Introduction: My name is Nicola Considine CPA, I am a determined, witty, powerful, brainy, open, smiling, proud person who loves writing and wants to share my knowledge and understanding with you.