B60/100

Washington Tap Water Quality Rankings 2026

255 cities · 8,893,518 people served

Top Contaminant Concerns

Copper (90th percentile)PFOSPFOALead (90th percentile)PFHxS

All Cities in Washington

#	City	Score	Population	Violations
1	Seattle	A (91)	1,160,460	14
2	Tacoma	C (41)	609,307	1168
3	Vancouver	D (31)	492,957	165
4	Spokane	D (32)	422,776	1310
5	Kent	B (67)	358,878	57
6	Bellevue	A (83)	317,330	9
7	Everett	A (80)	280,092	48
8	Lynnwood	A (90)	268,204	12
9	Renton	B (72)	191,753	62
10	Redmond	C (44)	175,279	155
11	Yakima	C (43)	163,162	279
12	Bellingham	C (58)	158,402	328
13	Mount Vernon	B (65)	139,155	98
14	Olympia	C (48)	122,974	551
15	Kennewick	D (32)	121,130	197
16	Lacey	C (58)	119,057	85
17	Federal Way	D (31)	118,273	50
18	Auburn	D (32)	116,345	106
19	Pasco	C (58)	116,342	28
20	Richland	C (52)	106,248	41
21	Kenmore	A (88)	105,105	4
22	Bremerton	B (72)	97,146	57
23	Puyallup	C (56)	94,301	153
24	Bothell	A (90)	90,225	16
25	Marysville	B (66)	88,589	15
26	Sammamish	C (56)	87,878	61
27	Joint Base Lewis-Mcchord	C (40)	71,612	132
28	Kirkland	A (99)	67,107	1
29	Tumwater	C (50)	66,373	15
30	Silverdale	B (70)	62,266	127
31	Lakewood	C (45)	62,089	24
32	Poulsbo	C (54)	59,907	684
33	Woodinville	A (95)	59,873	5
34	Wenatchee	C (53)	59,530	84
35	Buckley	C (43)	57,990	191
36	Port Orchard	D (32)	57,553	704
37	Pullman	A (83)	51,196	25
38	Edmonds	A (92)	50,426	12
39	Longview	B (78)	49,111	14
40	Walla Walla	C (46)	45,787	150
41	Tukwila	A (100)	45,374	0
42	Issaquah	F (0)	43,584	172
43	Snohomish	B (74)	40,003	81
44	Spokane Valley	B (60)	33,907	105
45	Shelton	C (47)	33,213	610
46	Moses Lake	F (0)	32,428	265
47	Fife	B (69)	32,380	12
48	Port Angeles	B (63)	31,976	31
49	Spanaway	C (54)	31,908	7
50	Camas	F (0)	31,794	152
51	Shoreline	A (97)	31,744	3
52	Cheney	B (68)	31,729	54
53	Port Townsend	C (40)	31,477	184
54	Mercer Island	A (92)	30,689	4
55	Greenacres	C (50)	30,654	45
56	Battle Ground	F (0)	29,974	179
57	Kelso	A (82)	29,970	31
58	Maple Valley	A (100)	28,671	0
59	Centralia	B (71)	28,164	9
60	Mead	F (0)	26,883	134
61	Monroe	A (81)	26,588	25
62	East Wenatchee	F (0)	26,519	28
63	Mountlake Terrace	A (88)	26,402	12
64	Mukilteo	A (96)	25,182	4
65	Oak Harbor	B (77)	23,767	12
66	Sequim	B (73)	23,530	101
67	Enumclaw	B (76)	23,276	13
68	Lynden	D (29)	22,955	199
69	Clarkston	F (0)	21,930	101
70	Washougal	F (0)	21,441	80
71	Stanwood	D (20)	21,108	292
72	Ridgefield	F (0)	20,967	1369
73	Ellensburg	B (74)	20,900	11
74	Hoquiam	C (41)	20,803	135
75	Arlington	A (91)	20,418	1
76	Yelm	A (80)	19,589	17
77	Ferndale	B (77)	19,305	20
78	West Richland	B (71)	18,280	25
79	Aberdeen	B (60)	17,958	12
80	Gig Harbor	B (68)	17,912	56
81	Sunnyside	C (53)	17,037	33
82	Nas Whidbey Island	A (87)	16,595	10
83	Raymond	D (24)	16,386	367
84	Burien	A (89)	16,065	7
85	Newcastle	A (86)	15,989	10
86	Snoqualime	C (46)	15,848	24
87	Sumner	F (15)	15,530	82
88	Carlsborg	B (78)	15,314	64
89	Quincy	D (27)	14,716	379
90	Montesano	C (47)	14,434	146
91	Liberty Lake	B (64)	14,212	25
92	Loon Lake	C (52)	14,071	221
93	Duvall	A (95)	14,063	9
94	North Bend	A (80)	13,828	20
95	Dupont	A (92)	13,141	5
96	Selah	D (30)	12,515	62
97	Bainbridge Island	A (80)	12,486	5
98	Chehalis	C (45)	11,426	39
99	Grandview	F (0)	11,010	112
100	Ocean Park	C (51)	10,780	66
101	Woodland	F (0)	10,640	128
102	Manchester	D (36)	10,437	33
103	Leavenworth	D (31)	10,388	78
104	Orting	B (65)	10,332	20
105	Ephrata	D (33)	9,728	174
106	Edgewood	B (66)	9,680	7
107	Airway	F (5)	9,489	84
108	Chelan	F (0)	9,425	100
109	Birch Bay	F (13)	9,019	28
110	Toppenish	A (96)	8,950	4
111	Othello	F (0)	8,755	78
112	Steilacoom	A (91)	8,545	2
113	College Place	F (0)	8,147	112
114	Milton	D (34)	8,078	55
115	Cashmere	C (58)	8,070	54
116	Kalama	A (81)	8,020	8
117	Fircrest	F (18)	7,927	55
118	Sultan	F (0)	7,160	85
119	Granite Falls	A (84)	6,926	5
120	Manson	C (49)	6,798	44
121	Coupeville	C (49)	6,669	72
122	Elma	B (61)	6,638	28
123	Union Gap	C (57)	6,433	23
124	Blaine	F (0)	6,319	96
125	Prosser	B (78)	6,211	11
126	Cle Elum	C (51)	6,011	162
127	Tulalip	F (0)	5,968	237
128	Snoqualmie Pass	F (0)	5,805	104
129	Vashon	C (46)	5,774	116
130	Benton City	F (0)	5,626	32
131	Moxee	F (2)	5,599	87
132	Fairchild Afb	B (73)	5,553	8
133	Friday Harbor	F (0)	5,528	313
134	Belfair	F (17)	5,454	87
135	Westport	F (0)	5,346	174
136	Wapato	D (38)	5,255	62
137	Connell	F (0)	5,150	110
138	Deer Park	C (59)	5,045	30
139	Des Moines	B (66)	5,037	11
140	Mattawa	F (0)	5,015	177
141	Medical Lake	A (82)	4,982	7
142	Colville	B (75)	4,955	6
143	Omak	A (91)	4,940	6
144	Freeland	F (9)	4,784	1184
145	Forks	A (85)	4,744	12
146	Warden	F (0)	4,674	90
147	Long Beach	F (0)	4,592	178
148	Newport	F (5)	4,557	280
149	Brewster	B (79)	4,400	35
150	Castle Rock	D (36)	4,367	45
151	Goldendale	B (60)	4,314	37
152	Napavine	D (23)	4,269	143
153	White Salmon	D (25)	4,077	52
154	Granger	B (74)	3,993	14
155	Everson	C (52)	3,788	37
156	Eastsound	F (0)	3,711	120
157	Hoodsport	B (70)	3,675	15
158	Eatonville	D (29)	3,645	52
159	Zillah	D (24)	3,518	44
160	Naches	F (0)	3,512	103
161	Colfax	C (43)	3,507	46
162	Winlock	F (0)	3,502	142
163	La Conner	A (88)	3,424	14
164	Royal City	C (57)	3,389	36
165	Tenino	C (51)	3,336	38
166	Dayton	B (71)	3,283	13
167	Oroville	F (0)	3,256	78
168	Fox Island	F (0)	3,255	213
169	Rock Island	A (80)	3,226	13
170	Algona	B (75)	3,180	10
171	Lake Forest Park	F (0)	3,171	1916
172	Port Ludlow	B (75)	3,086	6
173	Carson	F (0)	3,015	218
174	Fall City	A (80)	2,987	13
175	South Bend	F (0)	2,930	322
176	Okanogan	F (8)	2,921	77
177	Desert Aire	F (0)	2,856	108
178	Rainier	F (19)	2,758	66
179	Ilwaco	D (26)	2,757	50
180	Mccleary	B (64)	2,753	33
181	Goldbar	B (60)	2,745	25
182	Kettle Falls	A (91)	2,698	5
183	Maple Falls	B (77)	2,648	20
184	Chewelah	D (28)	2,615	61
185	Stevenson	D (26)	2,594	66
186	Asotin	A (89)	2,531	7
187	Bow	B (67)	2,497	31
188	Malaga	B (62)	2,478	18
189	Nooksack	B (60)	2,427	20
190	Black Diamond	F (0)	2,420	164
191	Ion	B (75)	2,395	14
192	Tonasket	C (55)	2,392	18
193	Adna	F (0)	2,389	84
194	Glacier	B (74)	2,383	11
195	Joyce	F (15)	2,360	45
196	Kittitas	B (76)	2,247	17
197	Darrington	C (50)	2,246	39
198	Bridgeport	D (28)	2,214	69
199	Union	A (89)	2,154	7
200	Mabton	F (0)	2,150	117
201	Morton	B (64)	2,147	29
202	Allyn	A (80)	2,120	16
203	Roslyn	A (85)	2,099	11
204	Onalaska	F (0)	1,983	515
205	Clinton	B (72)	1,980	13
206	Toledo	B (67)	1,944	22
207	Mt Vernon	A (93)	1,890	4
208	Falls City	A (86)	1,867	11
209	Waitsburg	B (73)	1,817	20
210	Electric City	D (22)	1,812	31
211	Newman Lake	C (50)	1,790	23
212	Sedro Woolley	B (78)	1,780	15
213	Rochester	C (47)	1,762	38
214	Bingen	F (0)	1,758	132
215	Mesa	D (30)	1,740	42
216	Sumas	C (42)	1,740	38
217	Entiat	C (41)	1,730	59
218	Ritzville	D (28)	1,725	45
219	Davenport	D (27)	1,720	34
220	Republic	D (32)	1,673	21
221	Cathlamet	F (0)	1,636	182
222	Snoqualmie	B (76)	1,603	13
223	Taholah	F (0)	1,600	456
224	Laconner	A (93)	1,585	7
225	Mossyrock	C (53)	1,553	36
226	Kingston	F (0)	1,509	87
227	Lake Tapps	C (44)	1,500	25
228	Graham	B (63)	1,474	18
229	Point Roberts	B (72)	1,440	17
230	Grand Coulee	A (89)	1,428	4
231	Packwood	F (6)	1,425	83
232	Waverly	B (61)	1,418	23
233	Langley	B (73)	1,416	8
234	Pomeroy	F (3)	1,395	93
235	Anderson Island	F (18)	1,380	67
236	Coulee Dam	A (90)	1,359	3
237	Winthrop	B (72)	1,350	17
238	Oakville	F (17)	1,325	64
239	Harrah	B (61)	1,304	19
240	Neah Bay	F (0)	1,300	759
241	Palouse	C (40)	1,298	37
242	Pouslbo	B (63)	1,229	18
243	Roy	A (84)	1,214	5
244	Lopez Island	C (54)	1,195	30
245	Skokomish Nation	F (0)	1,150	164
246	Pateros	F (13)	1,149	76
247	Ashford	B (71)	1,141	18
248	Waterville	F (8)	1,140	61
249	Tekoa	D (38)	1,076	55
250	Wilkeson	B (78)	1,071	19
251	North Bonneville	B (73)	1,048	16
252	Twisp	D (31)	1,044	42
253	Marshall	F (0)	1,040	107
254	George	D (27)	1,035	61
255	Quinault	F (0)	1,003	271