California utilities with soft water.

Up to 60 mg/L (3.5 grains per gallon). 325 utilities serving 910,291 people as they report it, largest first.

201 to 300 of 325, by people served

California utilities with soft water, 201 to 300, 201 to 300
Utility	Based in	Serves	Hardness, mg/L	Grains per gallon
Pinon Valley Water Company	Tehachapi	112	7.6	0.4
Camanche South Shore - EBMUD	Valley Springs	111	15	0.9
Cdf - Owens Valley Conservation Camp	Bishop	110	45	2.6
Sun Mountain M.W.C.	MT. Shasta	109	50	2.9
Wildwood Mobile Home Pk Inc	Fresno	106	27	1.6
Lodi Lake Mobile Home Park	Woodbridge	104	36	2.1
Sce/Big Creek Powerhouse 1	Rosemead	104	4.8	0.3
Rush Creek Mutual Water System	Weaverville	102	38	2.2
Bear State Water Works	Georgetown	100	4	0.2
Glennville Mutual Water Company	Glennville	100	56	3.2
Glenwood Mobile Home Park	San Ramon	100	36	2.1
Hess Winery	Napa	100	13	0.8
Dunrovin Mobile Home Village	Concord	99	39	2.3
Donner Summit Public Utility District	Soda Springs	98	3.6	0.2
Liberty - Bellview Heights	Downey	98	47	2.7
Ocotillo Oasis, LLC	San Marcos	96	9.5	0.6
Landale Mutual Water Company	Lancaster	90	25	1.5
Linda Vista Mutual Water Co	Angwin	90	45	2.6
Bonadelle Ranchos No. 2 Mutual Water Co	Madera	89	57	3.3
Ccwd - Sheep Ranch	San Andreas	89	21	1.2
Hunter Valley CSD	Klamath	87	21	1.2
Noel Heights - Cal Water Service (Puc)	San Jose	86	56	3.3
Wheeler Crest CSD	Bishop	86	41	2.4
Sierra East HOA	Coleville	84	33	1.9
Sunrise Shore Mutual Water Company	Lower Lake	83	56	3.3
Locke Water Works Co [sws]	Walnut Grove	80	52	3
Yosemite Vista Estates	Groveland	80	57	3.3
Camden Trailer Park	Fresno	75	6.4	0.4
Clear Creek Mobile Park	Redding	75	45	2.6
South Feather W&P - Bangor	Oroville	73	20	1.2
Thermal Park	Indio	73	41	2.4
Upper Little Bear Mountain Club	Blue Jay	72	47	2.7
The Village Mobile Home Park	Valencia	71	31	1.8
Hidden Harbor Marina & Rvp	Fremont	70	56	3.3
New Horizons Mobile/Rv Park	Redmond	70	17	1
Sierra Pines Mobile Home Park	South Lake Tahoe	70	30	1.8
Washington Ridge C.C.	Nevada City	70	36	2.1
Hardwick Water Company	Hanford	69	35	2
Quintette Service Corp Water	Georgetown	68	6.3	0.4
Zonneveld Dairy - Cedar	Laton	68	2.9	0.2
Beach Creek Mobile Home Park	Sebastopol	67	19	1.1
Calistoga Farm Worker Center	Napa	67	36	2.1
Doubletree Ranch Water System	Livermore	66	7	0.4
Lone Pine Mutual Water Company	Sebastopol	65	53	3.1
Elm Court	Fresno	64	24	1.4
Cold Creek Mutual Water Company	MT. Shasta	63	27	1.6
Aspendell Mutual Water Company	Bishop	60	46	2.7
Country Hills Estates	Arroyo Grande	60	52	3
Country Villa Apts	Brentwood	60	14	0.8
Desert View Trailer Park	La Verne	60	44	2.6
Rebel Ridge Village	Camptonville	60	35	2
Brookside Estates Mutual Water Company	Bishop	59	42	2.5
Ranch Road Estates Mutual Water Company	Bishop	57	48	2.8
Winterhaven Mobile Estates	Lake Hughes	56	40	2.3
Camp Nelson Water Company	Springville	55	36	2.1
Mokelumne Mobile Senior Park	Galt	55	41	2.4
Pinecrest Permittees Assn	Pinecrest	55	34	2
Shasta Horizon Mobile Home Park	Sacramento	55	43	2.5
Lakeshore Villa Mutual Water Co	Lakehead	54	48	2.8
River Grove Mutual Water Assn	Felton	54	54	3.2
Pine Grove Mobilehome Park	Pleasant Hill	53	60	3.5
Vista Robles Association	Ben Lomond	53	31	1.8
Yosemite NPS - Hodgdon Meadow	Yosemite Np	51	28	1.6
Century Mobile Home Park	Riverbank	50	52	3
Cobles Corner	Hughson	50	54	3.2
Holly Ranch Village	Fort Bragg	50	27	1.6
Marquez Rental	Firebaugh	50	43	2.5
Tennant C.S.D.	Macdoel	50	34	2
Woodfords Mutual Water Company	Minden	50	46	2.7
Pond Mutual Water Company	Wasco	48	20	1.2
Tunnel Trailer Park	Walnut Grove	48	47	2.7
Sweet Water Co - Op	Inyokern	47	50	2.9
Placer CWA - Monte Vista	Auburn	46	9.7	0.6
Ironwood Camp	Newberry Springs	45	4	0.2
Choctaw Valley Mutual Water Co.	Bakersfield	44	18	1.1
Aberdeen Water System	Crowley Lake	43	49	2.9
Rubys Valley Care Home	West Des Moines	43	33	1.9
Bass Lake Annex 3	Wishon	42	46	2.7
Branscomb Mobile Home Park	Rohnert Park	42	35	2
Point Cabrillo Highlands	Oakland	42	34	2
Don Pedro Rec Ag:flem.Meadows	La Grange	41	20	1.2
Covington Mill MWC - Division B	Tujunga	40	32	1.9
Edgewater Mobile Home Park	Granite Bay	40	23	1.3
Ione Band of Miwok Indians	Plymouth	40	2.7	0.2
Lakehead Subd Mutual Water Co	Lakehead	40	60	3.5
Pg&E Helms Support Facility	Auberry	40	14	0.8
Riverland Resort	Reedley	40	53	3.1
Stonewood Canyon Estates	Idyllwild	40	22	1.3
Hanot Foundation Inc	Lockeford	38	44	2.6
Terra de Oro Water Company	Arroyo Grande	38	15	0.8
Big River Vista Mutual Water Company	Mendocino	36	16	0.9
Evergreen Mobile Home Park	Lincoln	36	59	3.4
McClure Boat Club, Inc.	Snelling	36	20	1.2
Zonneveld Dairy - Cerini	Laton	36	15	0.9
Canyon Creek MHP	Redding	35	52	3
Feather River Manor	Plumas Lake	35	49	2.9
Linda Falls Terrace Mutual	Angwin	35	44	2.6
Larkin Woods Mutual Water Company	Sebastopol	34	54	3.2
Sunny Road Water System	El Monte	34	55	3.2
Lincoln Chan - Home Ranch	Courtland	33	33	1.9

Source: California State Water Resources Control Board, Division of Drinking Water, 2,449 utilities, results from Jan. 2, 2019 to July 14, 2026, read Oct. 10, 2026. Each sampling point is taken at its median; a figure is typical where every point falls in one band.

Also: 7 utilities’ own water quality reports, read by hand, each named on the utility’s page.

Bands are the U.S. Geological Survey’s, at 17.1 mg/L to the grain. People served is what each utility reports; where one sells water to another, the same people can be counted twice. How hardness is measured here.

201 to 300 of 325, by people served

Where to go next