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.

201 to 300 of 412, by people served

Washington utilities with soft water, 201 to 300, 201 to 300
Utility	Based in	Serves	Hardness, mg/L	Grains per gallon
Boots & Saddles 662	Lacey	150	56	3.3
Evergreen Water & Improvement Assn	Port Orchard	150	40	2.3
Mission Creek Tracts	Belfair	150	57	3.3
Palermo 691	Lacey	150	5	0.3
Pomona Artesian Irrigation Company	Yakima	150	53	3.1
Dayton Trails	Shelton	148	41	2.4
Shorebrook Community Club	Port Orchard	148	44	2.6
Valley Meadows 240	Lacey	148	46	2.7
MUD Bay	Port Orchard	145	20	1.2
Glenwood Station	Tacoma	144	59	3.5
Middle Fork Water & Sewer	Chehalis	144	43	2.5
Driftwood Point Water System	Gig Harbor	143	56	3.3
Little Tree	Tacoma	143	47	2.7
Diamond Springs Water Association	Port Orchard	138	50	2.9
Pasco Heights Domestic Water Assn	Kennewick	135	21	1.2
Marlin Hutterian	Marlin	134	40	2.3
Skamania Landing Owners Assn	Port Orchard	132	44	2.6
Country Squire Mobile Manor	Yakima	131	56	3.3
Vineyard the 696	Lacey	130	42	2.5
Dobler John D Water System	Port Orchard	128	51	3
Sandwood Heights Subdivision	Woodland	126	57	3.3
Kiona Village Court	Prosser	124	56	3.3
Surfrest Park Water Company	Poulsbo	123	58	3.4
Greenwater Meadows Landowners Assn	Sultan	122	22	1.3
Stahl Hutterian Brethren	Ritzville	122	5.4	0.3
Aldergrove Water Assoc.	Lynden	120	26	1.5
Forest Park Water System	Gig Harbor	120	47	2.7
Maple Manor Mobile Home Park	Tumwater	120	46	2.7
Rainbow Court	Prosser	120	40	2.3
Riverside Villa	Port Orchard	120	41	2.4
Three Fingers	Port Orchard	118	41	2.4
Twanoh Heights Community Club	Union	118	38	2.2
Holly	Port Orchard	111	48	2.8
Green Mountain Acres	Poulsbo	110	43	2.5
Highland Estates	Union	110	46	2.7
Skyview	Port Orchard	110	42	2.5
Potlatch Beach Mutual	Hoodsport	109	46	2.7
Conagra Foods Lamb Weston Inc - Farm	Pasco	107	16	1
Pilchuck Riviera #2	Snohomish	107	31	1.8
May Volt Hills	Tacoma	106	60	3.5
Parkwood Mobile Home Estates	Chehalis	105	40	2.3
Lynch Cove Div 1 Water Assn	Port Orchard	102	46	2.7
Little Butte Water System	Chelan	101	21	1.2
Agate West	Freeland	100	30	1.8
Arlington East Mutual Water Assn.	Arlington	100	26	1.5
Creekside Apartments	Black Diamond	100	60	3.5
Duggan Falls	Port Orchard	100	12	0.7
Riverlea 692	Lacey	100	52	3
Sun - Tides Rv Park	Yakima	100	53	3.1
River Ridge Farmworker Housing	Yakima	98	33	1.9
North Offut Lake WTR Service	Olympia	97	25	1.4
Bar B Estate Manor	Tacoma	96	41	2.4
Dexter by the Sea	Raymond	96	55	3.2
Mason County Lost Lake	Port Orchard	96	46	2.7
Rosedale Community Club	Tacoma	96	58	3.4
Spring Glen Mobile Home Park	Mercer Island	96	56	3.3
Corbett Creek	Port Orchard	95	47	2.7
Hartwood Water System	Port Orchard	95	46	2.7
Cedarbrook	Tacoma	93	47	2.7
Cedar Crest Mobile Home Park	Olympia	92	52	3
Merwin Village/Park Ppl Co	Woodland	92	47	2.7
Seamount Estates Community	Port Orchard	92	38	2.2
Crescent Valley #333	Tacoma	91	39	2.3
Cedar View Tracts Comm Club	Port Orchard	90	52	3
Kings Meadow MHP	Port Orchard	90	52	3
Lake Alice Water Association	Fall City	90	55	3.2
Pederson Place 604	Lacey	90	35	2
Rakwanna Park Water Sys Inc	Woodinville	90	59	3.5
Glacier Springs Water System	Lynden	88	52	3.1
Harstene Retreat	Shelton	88	49	2.9
Glenwood Farms 1 East	Tacoma	87	37	2.2
West Wynd	Port Orchard	87	54	3.2
Lake Wenatchee Water District	Leavenworth	86	45	2.6
Alder Lake	Port Orchard	85	43	2.5
Cooper Point Water Co	Shelton	85	49	2.9
Delphi Mobile Home Park	Port Orchard	85	29	1.7
Minerva Terrace	Shelton	85	24	1.4
Sunnyslope Mutual Water System	Vashion Island	85	59	3.4
Harmony Park Lot Owners	Chehalis	81	47	2.7
Pressentin Creek Wilderness	Concrete	81	53	3.1
Green Mountain Mobile Ranch	Auburn	80	48	2.8
Silver Springs Estates	Tacoma	80	55	3.2
Spruce Road	Tacoma	80	44	2.5
Martens Add Mutual Water Assoc	Spanaway	79	58	3.4
Sect 11 Div 1 Ridgeview Water Assn	Moses Lake	79	40	2.3
Clearwater Domestic Water Assn	Pasco	78	28	1.6
Western Airpark	Shelton	78	53	3.1
Lost River Airport Association	Tonasket	76	51	3
Remolif Addition		76	28	1.6
Arlington View Estates Water Assoc	Arlington	75	23	1.3
Lenora Water and Sewer District	Usk	75	3.7	0.2
Redtail Hawk 616	Lacey	75	44	2.6
Skagit Co PUD - Potlatch Beach	Mount Vernon	75	27	1.6
Thunderbird Terrace Water System	Monroe	75	26	1.5
Windolph	Port Orchard	75	52	3.1
Woodland Park Mobil Court	Yakima	75	56	3.3
Haynes Acres Division 1	Olympia	74	56	3.3
Martin Way Mobile Home Park	Port Orchard	73	50	2.9
Schoonover Hutterian Brethren	Odessa	73	17	1
Alpine Mobile Estates	Port Orchard	71	38	2.2

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.

201 to 300 of 412, by people served

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