Washington utilities with soft water.

Up to 60 mg/L (3.5 grains per gallon). 412 utilities serving 2.5 million people as they report it, largest first.

301 to 412 of 412, by people served

Washington utilities with soft water, 301 to 412, 301 to 412
Utility	Based in	Serves	Hardness, mg/L	Grains per gallon
Vikings West Mobile Home	Aberdeen	71	1.4	0.1
Bell Woods	Port Orchard	70	8	0.5
Island View Lud 9	Carlsborg	70	16	0.9
Longhorn Country Estates 687	Lacey	70	52	3
Rhododendron Place	Union	70	54	3.2
Hi Valley View	Yakima	67	35	2
Lake Pleasant Mobile Home & Rv Park	Beaver	66	16	0.9
Parkside Airpark Owners	Battle Ground	66	20	1.2
Sivo Acres	Tacoma	66	54	3.2
Clifton Beach Tracts Co Op	Port Orchard	65	46	2.7
Coach Post Mobile Park	Port Orchard	65	40	2.3
Forest Ridge	Sequim	65	58	3.4
Frost Road Park	Winlock	65	40	2.3
Playland Park	Yakima	65	46	2.7
Hamma Ridge	Shelton	63	58	3.4
Key Ridge Water System	Gig Harbor	63	47	2.8
Prairie Vista	Rochester	63	54	3.2
Timberlane Mobile Home Park	Napavine	63	34	2
Bacus Road #1	Freeland	62	32	1.9
Stone Creek Estates Water Assn.	Kent	62	55	3.2
Henderson Bay	Tacoma	61	49	2.9
Rocky Acres Water System	Port Orchard	61	51	3
Belfern West	Lynden	60	54	3.2
Crocker Creek 663	Lacey	60	44	2.6
Kicuwa Meadows	Port Orchard	60	52	3
New Pine Acres	Union	60	54	3.2
Parkwood Apartments	Shelton	60	46	2.7
Pirnie Road	Puyallup	60	38	2.2
Swanrun Water System	Freeland	60	53	3.1
Tukes Mountain Homeowners	Woodland	60	9.3	0.5
Wayside Village	Chehalis	60	52	3
Western Stavis Water Sys II & III	Poulsbo	60	48	2.8
Sunnybank Water System	Cashmere	58	21	1.2
Arlington Heights Water Co Inc	Arlington	57	35	2.1
Fall City Water Dist.(Spring Hill)	Fall City	57	55	3.2
Magna Vista Water Corp	Woodland	56	54	3.2
Township Place	Napavine	56	50	2.9
Cascade Crest	Port Orchard	55	42	2.5
Northwest Mobile Home Park	Lynden	55	42	2.5
Prairie Village LLC	Napavine	55	54	3.2
Columbia Springs Estates	Tonasket	54	24	1.4
Crowder Road 213	Lacey	54	34	2
Garden Court Mutual	Port Orchard	54	8	0.5
Shorewood	Port Orchard	54	52	3
Delta Long Lk Acre Tracts	Tacoma	53	37	2.2
Diablo WTR Sys - Seattle City Light	MT Vernon	53	56	3.2
Whiteman Cove Water District	Gig Harbor	53	60	3.5
Winddrift Well	Tacoma	53	46	2.7
Cowlitz Indian Tribal Housing	Mossyrock	52	55	3.2
North Terra Vista Water Users Assn	Yakima	52	54	3.2
Bolduc Community	Union	51	43	2.5
Tahja II	Port Orchard	51	47	2.7
Timberlane Village Water	Baring	51	19	1.1
Beverly Beach Homeowners	Port Orchard	50	46	2.7
Country Haven Water Assoc	Bellingham	50	54	3.2
Holiday Hills Community Club Inc	Port Orchard	50	46	2.7
Lakeview	Pasco	50	1.3	0.1
Mount Forest Water System	Lake Stevens	50	57	3.3
Silver Fox 693	Lacey	50	46	2.7
Terrace Park Water Association	Yakima	50	60	3.5
Vista by the Sea	Port Orchard	50	40	2.3
New Horizons	Yakima	49	27	1.6
Columbia Crest Estates	Napavine	48	6	0.4
Glenwood Farms 2 West	Tacoma	48	44	2.6
Little Mission Creek	Belfair	47	42	2.4
Mineral Heights Association	Friday Harbor	46	50	2.9
Allyn Carey	Shelton	45	28	1.6
Henderson Park Development Company	Port Orchard	45	51	3
Kelley Crest	Woodland	45	50	2.9
Kelly Road Water Association	Lynden	45	46	2.7
Kooskooskie Cabin Owners Inc.	Walla Walla	45	20	1.2
Ripplewood Tracts	Shelton	45	30	1.8
Calmor Cove Club	Lynden	44	21	1.2
Shawnee Hill Condominium WS	Vashon	44	49	2.9
Vineyard Cove Corporation	Port Orchard	44	52	3
Wind River Community	Woodland	44	26	1.5
Darrington Water Association	Darrington	42	18	1
Ottercrest Estates Water System	Port Orchard	42	36	2.1
Silverbrook Mh & Rv	Napavine	42	29	1.7
Summerhill	Tacoma	42	55	3.2
Mountain View	Union	41	12	0.7
New Arcadia Water System	Ravensdale	40	57	3.3
Panoramic Heights	Carlsborg	40	22	1.3
Prine Drive Apartments	Shelton	40	54	3.2
Willard	Willard	40	14	0.8
Hipma	Port Orchard	39	46	2.7
Kamilche Point Community Club	Shelton	39	58	3.4
Long Lake View Est 1	Tacoma	39	45	2.7
Skate Creek Terrace Association	Napavine	39	20	1.2
Snug Harbor Owners Club	Port Orchard	39	50	2.9
Point Richmond HOA	Port Orchard	38	52	3
Greenbriar	Tacoma	37	52	3
Huffman	Port Orchard	37	24	1.4
Aust 210	Lacey	35	16	0.9
Rocky Bay	Tacoma	34	40	2.3
Estates at Livingston Mtn	Woodland	33	23	1.3
Bel Aire Cove	Union	32	45	2.6
Whittlesey Water System	Yakima	31	31	1.8
Chico Heights Community	Kirkland	30	46	2.7
Hunt Community (Hunt III)	Port Orchard	30	50	2.9
Smith Cove	Port Orchard	30	48	2.8
Tiger Mtn Tracts	Issaquah	30	21	1.2
Grasslands Park	Cle Elum	29	11	0.6
Heather Water Works	Raymond	29	55	3.2
Louella Heights	Sequim	28	32	1.9
Mountain Ridge	Roslyn	28	11	0.6
Queen Anne Water Works LLC	Shelton	28	48	2.8
Swiftwater Trailer Park	Cle Elum	27	45	2.6
Red Gate Mobile Home Park	Port Orchard	25	48	2.8
Sward 278	Lacey	25	36	2.1
Viking Village Mobile Home Park	Woodland	25	48	2.8
Clarks Creek LLC	Puyallup	20	42	2.5

Source: Washington State Department of Health, Office of Drinking Water, 1,479 utilities, results from Jan. 7, 2020 to Sept. 22, 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: 2 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.

301 to 412 of 412, by people served

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