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The Municipal Water District of Orange County is a wholesale water supplier and resource planning agency that serves all of Orange County (except Anaheim, Fullerton, and Santa Ana) through 28 retail water agencies. We purchase imported water from the Metropolitan Water District of Southern California and distribute it to our client agencies, which provide retail water services to the public.
 
East Orange County Water District
(714) 538-5815
Fax: (714) 538-0334

El Toro Water District
(949) 837-7050
Fax: (949) 837-7092
Emergency: (949) 837-0660

Emerald Bay Service District
(949) 494-8571
Fax: (949) 494-8571

Golden State Water Co.
(714) 535-8010
Fax: (714) 535-8664

Irvine Ranch Water District
(949) 453-5300
Fax: (949) 453-0128

Laguna Beach County Water District
(949) 494-1041
Fax: (949) 497-1021

Mesa Water District
(949) 631-1200
Fax: (949) 574-1036
Moulton Niguel Water District
(949) 831-2500
Fax: (949) 831-5651

Santa Margarita Water District
(949) 459-6400
Fax: (949) 459-6463

Serrano Water District
(714) 538-0079
Fax: (714) 538-5279

South Coast Water District
(949) 499-4555
Fax: (949) 499-4256

Trabuco Canyon Water District
(949) 858-0277
Fax: (949) 858-3025

Yorba Linda Water District
(714) 777-3018
Fax: (714) 777-8304
  

 
(714) 765-5100
Fax: (714) 765-5164
Emergency: (714) 765-4561

City of Brea
(714) 990-7600
Fax: (714) 990-2258
Emergency: (714) 990-7624
City of Buena Park
(714) 562-3500
Fax: (714) 562-3599
Emergency: (714) 562-3599

City of Fountain Valley

(714) 593-4493
Fax: (714) 965-3253
Emergency: (714) 593-4485
 
City of Fullerton
(714) 738-6350
Fax: (714) 525-8071
Emergency: (714) 593-4485

City of Garden Grove
(714) 741-5395
Fax: (714) 638-9906
Emergency: (714) 738-6897

City of Huntington Beach
(714) 536-5921
Fax: (714) 847-1067

City of La Habra
(562) 905-9700
Fax: (562) 905-9781

City of La Palma
(714) 523-7700
Fax: (714) 523-2141

City of Orange
(714) 288-2475
Fax: (714) 744-2973

City of Newport Beach
(949) 644-3309
Fax: (949) 644-3339

City of San Clemente
(949) 366-1553
Fax: (949) 361-8234

City of San Juan Capistrano
(949) 493-1515
Fax: (949) 493-3955

(714) 647-5400
Fax: 647-6956
Emergency: (714) 647-3380


City of Seal Beach
(714) 828-8550
Fax: (562) 431-2541
Emergency: (562) 431-2541

City of Tustin

(714) 573-3375
Fax: (714) 838-0039

City of Westminster
(714) 898-3311
Fax: (714) 373-5328
Emergency: (714) 898-3315