Water Quality in Washington
EPA violation data for public water systems across Washington.
671
ZIP Codes
14,930
Total Violations
100 (15%)
ZIPs with 0 Violations
22.3
Avg per ZIP
National avg: 18.87 violations per ZIP.
Washington is 18% above average.
Violation Map
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0
1-5
6-15
16+
EPA violations (5yr)
Most Affected Areas in Washington
All ZIP Codes in Washington (671)
99157 Northport
1363 98239 Coupeville
556 98366 Port Orchard
507 98582 Centralia
328 98908 Yakima
223 99040 Wellpinit
215 99301 Pasco
215 99362 Walla Walla
205 98250 Friday Harbor
196 98168 Seattle
195 98565 Centralia
189 98584 Shelton
177 98826 Wenatchee
177 98837 Moses Lake
173 98848 Moses Lake
172 98260 Oak Harbor
170 98382 Sequim
163 98357 Port Angeles
162 98674 Vancouver
157 99323 Walla Walla
151 99155 Nespelem
148 99324 Walla Walla
139 98277 Oak Harbor
135 98937 Yakima
135 98103 Seattle
133 98855 Tonasket
133 98948 Yakima
127 98033 Seattle
125 99344 Pasco
124 98273 Mount Vernon
123 99156 Spokane
122 98528 Bremerton
120 99329 Walla Walla
116 99348 Walla Walla
116 99360 Walla Walla
116 99361 Walla Walla
116 99363 Walla Walla
116 98241 Everett
114 98951 Yakima
101 98244 Bellingham
100 99349 Moses Lake
95 98577 Raymond
93 98249 Oak Harbor
90 98223 Everett
87 99166 Republic
83 98108 Seattle
79 98823 Moses Lake
76 98021 Everett
74 99115 Moses Lake
69 98224 Seattle
68 98126 Seattle
67 98815 Wenatchee
67 98801 Wenatchee
65 98902 Yakima
65 98626 Longview
62 99217 Spokane
62 98812 East Wenatchee
61 98857 Moses Lake
57 98901 Yakima
57 98370 Bremerton
55 98512 Olympia
55 98587 Taholah
55 98930 Yakima
53 99302 Pasco
53 98851 Moses Lake
52 98022 Seattle
51 98568 Olympia
51 99116 Moses Lake
51 98392 Bremerton
50 98532 Centralia
48 98014 Seattle
47 99123 Moses Lake
47 98824 Moses Lake
46 99133 Moses Lake
46 98502 Olympia
45 98832 Moses Lake
45 98922 Cle Elum
45 98124 Seattle
44 98620 Goldendale
43 99103 Moses Lake
43 99357 Moses Lake
43 98245 Eastsound
42 98853 Moses Lake
42 98860 Moses Lake
42 99135 Moses Lake
42 99321 Moses Lake
42 98226 Bellingham
41 98936 Yakima
41 98952 Yakima
41 99114 Colville
41 98292 Everett
40 98331 Port Townsend
40 98335 Tacoma
39 99338 Kennewick
39 98107 Seattle
36 99020 Spokane
36 98248 Bellingham
35 99336 Kennewick
35 99337 Kennewick
35 98903 Yakima
34 98944 Yakima
34 98264 Bellingham
33 98282 Everett
33 98363 Port Angeles
33 98513 Olympia
32 98362 Port Angeles
31 98592 Shelton
31 99350 Yakima
31 98204 Everett
30 99353 Kennewick
30 98271 Everett
29 98601 Vancouver
28 98662 Vancouver
28 99039 Spokane
28 99122 Davenport
28 99128 Pullman
28 98304 Tacoma
27 98520 Aberdeen
26 98816 Wenatchee
26 98332 Tacoma
25 98942 Yakima
25 98953 Yakima
25 99032 Spokane
25 98501 Olympia
24 99206 Spokane
24 98028 Seattle
23 98272 Everett
23 98401 Tacoma
23 99016 Spokane
23 99352 Richland
23 98027 Seattle
22 98932 Yakima
22 98935 Yakima
22 98947 Yakima
22 98685 Vancouver
21 98921 Yakima
21 98923 Yakima
21 98933 Yakima
21 98938 Yakima
21 98939 Yakima
21 98625 Longview
20 98844 Oroville
20 98045 Seattle
19 98109 Seattle
19 98387 Tacoma
19 98672 White Salmon
19 98954 Wapato
19 98042 Seattle
18 98243 Deer Harbor
18 98373 Tacoma
18 98531 Olympia
18 98595 Westport
18 98650 Trout Lake
18 98683 Vancouver
18 98862 Winthrop
18 98059 Seattle
17 98070 Seattle
17 98258 Everett
17 98365 Port Townsend
17 98604 Vancouver
17 98648 Stevenson
17 98663 Vancouver
17 99224 Spokane
17 98148 Seattle
16 98222 Blakely Island
16 98524 Shelton
16 98563 Shelton
16 98686 Vancouver
16 98849 Riverside
16 98926 Ellensburg
16 99148 Loon Lake
16 98092 Seattle
15 98391 Tacoma
15 98564 Centralia
15 99347 Pullman
15 98390 Tacoma
14 98802 East Wenatchee
14 99004 Spokane
14 99320 Kennewick
14 99354 Kennewick
14 98057 Seattle
13 98228 Bellingham
13 98251 Everett
13 98262 Bellingham
13 98291 Snohomish
13 98368 Port Townsend
13 98526 Amanda Park
13 98682 Vancouver
13 98831 Wenatchee
13 98856 Twisp
13 99009 Spokane
13 99021 Spokane
13 99180 Usk
13 99343 Pasco
13 98206 Everett
12 98252 Everett
12 98320 Port Townsend
12 98572 Centralia
12 98590 Tokeland
12 98597 Olympia
12 99111 Pullman
12 99185 Wilbur
12 98225 Bellingham
11 98279 Olga
11 98338 Tacoma
11 98642 Vancouver
11 98660 Vancouver
11 98807 Wenatchee
11 98024 Seattle
10 98065 Seattle
10 98072 Seattle
10 98115 Seattle
10 98321 Tacoma
10 98350 Port Angeles
10 98394 Tacoma
10 98558 Tacoma
10 98610 Carson
10 98629 Vancouver
10 98858 East Wenatchee
10 98940 Ellensburg
10 99026 Spokane
10 99210 Spokane
10 99216 Spokane
10 99330 Pasco
10 98012 Everett
9 98133 Seattle
9 98201 Everett
9 98232 Mount Vernon
9 98236 Oak Harbor
9 98253 Oak Harbor
9 98256 Everett
9 98296 Everett
9 98349 Tacoma
9 98383 Bremerton
9 98589 Olympia
9 98607 Vancouver
9 98611 Longview
9 98617 Dallesport
9 98632 Longview
9 98671 Vancouver
9 98843 East Wenatchee
9 99017 Pullman
9 99033 Spokane
9 99403 Clarkston
9 98001 Seattle
8 98058 Seattle
8 98074 Seattle
8 98110 Bremerton
8 98266 Bellingham
8 98290 Everett
8 98294 Everett
8 98329 Tacoma
8 98381 Port Angeles
8 98396 Tacoma
8 98422 Seattle
8 98445 Tacoma
8 98467 Tacoma
8 98537 Cosmopolis
8 98579 Olympia
8 98665 Vancouver
8 98840 Okanogan
8 99006 Spokane
8 98032 Seattle
7 98038 Seattle
7 98043 Everett
7 98077 Seattle
7 98144 Seattle
7 98229 Bellingham
7 98240 Bellingham
7 98261 Lopez Island
7 98267 Mount Vernon
7 98274 Mount Vernon
7 98312 Bremerton
7 98409 Tacoma
7 98444 Tacoma
7 98499 Tacoma
7 98503 Lacey
7 98833 Mazama
7 98850 East Wenatchee
7 98909 Yakima
7 99003 Spokane
7 99129 Fruitland
7 99201 Spokane
7 98026 Everett
6 98104 Seattle
6 98118 Seattle
6 98203 Everett
6 98281 Bellingham
6 98284 Bellingham
6 98305 Port Angeles
6 98328 Tacoma
6 98359 Bremerton
6 98371 Tacoma
6 98372 Tacoma
6 98377 Centralia
6 98404 Tacoma
6 98424 Tacoma
6 98541 Shelton
6 98550 Hoquiam
6 98596 Centralia
6 98606 Vancouver
6 98612 Cathlamet
6 98645 Longview
6 98661 Vancouver
6 98664 Vancouver
6 98675 Vancouver
6 98684 Vancouver
6 98852 Wenatchee
6 99143 Pullman
6 99161 Pullman
6 99163 Pullman
6 99170 Spokane
6 99205 Spokane
6 99208 Spokane
6 99219 Fruitland
6 99359 Starbuck
6 98020 Everett
5 98036 Everett
5 98037 Everett
5 98047 Seattle
5 98051 Seattle
5 98087 Everett
5 98101 Seattle
5 98125 Seattle
5 98207 Everett
5 98208 Everett
5 98270 Everett
5 98275 Everett
5 98340 Bremerton
5 98354 Seattle
5 98360 Tacoma
5 98361 Centralia
5 98504 Olympia
5 98556 Olympia
5 98830 East Wenatchee
5 98846 Wenatchee
5 99005 Spokane
5 99025 Spokane
5 99029 Spokane
5 99102 Pullman
5 99109 Chewelah
5 99169 Ritzville
5 99328 Dayton
5 98010 Seattle
4 98019 Seattle
4 98034 Seattle
4 98053 Seattle
4 98127 Seattle
4 98221 Mount Vernon
4 98230 Bellingham
4 98257 Mount Vernon
4 98323 Tacoma
4 98325 Port Townsend
4 98327 Tacoma
4 98337 Bremerton
4 98346 Bremerton
4 98356 Centralia
4 98374 Tacoma
4 98375 Tacoma
4 98388 Tacoma
4 98443 Tacoma
4 98552 Humptulips
4 98561 Menlo
4 98580 Tacoma
4 98581 Longview
4 98603 Longview
4 98605 Bingen
4 98609 Longview
4 98616 Longview
4 98640 Ocean Park
4 98649 Longview
4 98813 East Wenatchee
4 98828 Wenatchee
4 98845 East Wenatchee
4 98847 Wenatchee
4 99022 Spokane
4 99113 Pullman
4 99125 Pullman
4 99130 Pullman
4 99136 Pullman
4 99149 Pullman
4 99158 Pullman
4 99171 Pullman
4 99174 Pullman
4 99176 Pullman
4 99179 Pullman
4 99202 Spokane
4 99207 Spokane
4 99333 Pullman
4 99335 Pasco
4 99371 Pasco
4 98003 Seattle
3 98008 Seattle
3 98052 Seattle
3 98068 Seattle
3 98220 Bellingham
3 98233 Mount Vernon
3 98237 Bellingham
3 98247 Bellingham
3 98288 Seattle
3 98303 Tacoma
3 98310 Bremerton
3 98315 Bremerton
3 98324 Carlsborg
3 98326 Port Angeles
3 98330 Tacoma
3 98333 Tacoma
3 98351 Tacoma
3 98367 Bremerton
3 98376 Port Townsend
3 98385 Tacoma
3 98402 Tacoma
3 98403 Tacoma
3 98405 Tacoma
3 98406 Tacoma
3 98407 Tacoma
3 98408 Tacoma
3 98416 Tacoma
3 98418 Tacoma
3 98421 Tacoma
3 98430 Tacoma
3 98433 Tacoma
3 98438 Tacoma
3 98439 Tacoma
3 98446 Tacoma
3 98447 Tacoma
3 98465 Tacoma
3 98466 Tacoma
3 98498 Tacoma
3 98506 Olympia
3 98516 Olympia
3 98530 Olympia
3 98546 Shelton
3 98555 Shelton
3 98588 Shelton
3 98591 Centralia
3 98623 Husum
3 98668 Vancouver
3 98821 Wenatchee
3 98822 Wenatchee
3 99031 Spokane
3 99139 Ion
3 99215 Spokane
3 99218 Spokane
3 99401 Clarkston
3 98002 Seattle
2 98004 Seattle
2 98005 Seattle
2 98006 Seattle
2 98007 Seattle
2 98011 Seattle
2 98023 Seattle
2 98025 Seattle
2 98029 Seattle
2 98030 Seattle
2 98031 Seattle
2 98035 Kent
2 98039 Seattle
2 98040 Seattle
2 98041 Bothell
2 98050 Seattle
2 98055 Seattle
2 98056 Seattle
2 98071 Auburn
2 98075 Seattle
2 98082 Mill Creek
2 98083 Kirkland
2 98102 Seattle
2 98105 Seattle
2 98106 Seattle
2 98112 Seattle
2 98116 Seattle
2 98117 Seattle
2 98119 Seattle
2 98121 Seattle
2 98122 Seattle
2 98134 Seattle
2 98136 Seattle
2 98146 Seattle
2 98154 Seattle
2 98155 Seattle
2 98158 Seattle
2 98164 Seattle
2 98166 Seattle
2 98174 Seattle
2 98177 Seattle
2 98178 Seattle
2 98188 Seattle
2 98195 Seattle
2 98198 Seattle
2 98199 Seattle
2 98231 Buckley
2 98278 Oak Harbor
2 98283 Bellingham
2 98286 Shaw Island
2 98311 Bremerton
2 98314 Bremerton
2 98342 Bremerton
2 98343 Joyce
2 98345 Bremerton
2 98353 Bremerton
2 98355 Centralia
2 98364 Bremerton
2 98380 Bremerton
2 98535 Copalis Beach
2 98576 Olympia
2 98583 Satsop
2 98585 Centralia
2 98631 Long Beach
2 98811 Wenatchee
2 98817 Wenatchee
2 98827 Loomis
2 98834 Methow
2 98836 Wenatchee
2 98841 Omak
2 98907 Yakima
2 98925 Ellensburg
2 98941 Ellensburg
2 98950 Ellensburg
2 99019 Spokane
2 99119 Cusick
2 99141 Kettle Falls
2 99152 Metaline
2 99159 Odessa
2 99164 Pullman
2 99173 Springdale
2 99212 Spokane
2 99223 Spokane
2 99345 Kennewick
2 99346 Kennewick
2 98189 Des Moines
1 98235 Mount Vernon
1 98238 Mount Vernon
1 98255 Mount Vernon
1 98263 Mount Vernon
1 98276 Bellingham
1 98280 Orcas Island
1 98295 Bellingham
1 98322 Burley
1 98336 Centralia
1 98339 Port Townsend
1 98358 Port Townsend
1 98505 Olympia
1 98509 Lacey
1 98533 Centralia
1 98538 Centralia
1 98539 Centralia
1 98540 East Olympia
1 98542 Centralia
1 98544 Centralia
1 98557 Shelton
1 98566 Neilton
1 98569 Ocean Shores
1 98570 Centralia
1 98593 Centralia
1 98630 Longview
1 98819 Conconully
1 98829 Malott
1 98946 Ellensburg
1 99001 Spokane
1 99008 Spokane
1 99011 Spokane
1 99014 Spokane
1 99030 Spokane
1 99037 Spokane
1 99124 Elmer City
1 99144 Colville
1 99181 Valley
1 99251 Spokane
1 99326 Pasco
1 99341 Lind
1