Water Quality in Wisconsin
EPA violation data for public water systems across Wisconsin.
912
ZIP Codes
11,576
Total Violations
233 (26%)
ZIPs with 0 Violations
12.7
Avg per ZIP
National avg: 18.87 violations per ZIP.
Wisconsin is 33% below average.
Violation Map
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0
1-5
6-15
16+
EPA violations (5yr)
Most Affected Areas in Wisconsin
All ZIP Codes in Wisconsin (912)
54806 Ashland
222 54481 Stevens Point
218 54209 Egg Harbor
184 53185 Racine
181 53149 Racine
168 53066 Waukesha
162 53017 Waukesha
136 53029 Waukesha
135 54235 Sturgeon Bay
133 53072 Waukesha
127 54155 Green Bay
118 54202 Baileys Harbor
114 53018 Waukesha
97 53105 Racine
96 53707 Madison
94 53186 Waukesha
92 53005 Waukesha
89 53150 Racine
89 53086 West Bend
87 53036 Waukesha
86 53089 Waukesha
85 53119 Waukesha
83 54246 Washington Island
83 53581 Richland Center
82 53118 Waukesha
81 53122 Waukesha
81 54933 Embarrass
81 53022 West Bend
80 53095 West Bend
80 53103 Waukesha
79 53188 Waukesha
76 53040 Sheboygan
75 53045 Waukesha
75 53183 Waukesha
75 54119 Dunbar
75 54722 Eau Claire
75 53037 West Bend
74 53090 West Bend
74 53019 Fond Du Lac
73 53021 Sheboygan
73 53058 Waukesha
73 53151 Waukesha
73 53153 Waukesha
73 53007 Waukesha
72 53033 West Bend
72 53046 Waukesha
72 54738 Eau Claire
72 53069 Waukesha
71 53127 Waukesha
71 53010 Fond Du Lac
70 53027 West Bend
70 53146 Waukesha
70 53189 Waukesha
70 53051 Waukesha
69 53225 Milwaukee
69 53227 Milwaukee
69 54212 Fish Creek
69 54880 Superior
69 53075 Sheboygan
68 53091 West Bend
67 53144 Kenosha
67 53012 West Bend
65 53002 West Bend
64 53076 West Bend
64 54937 Fond Du Lac
64 53092 Mequon
60 53588 Spring Green
57 54452 Wausau
55 53181 Kenosha
53 54601 La Crosse
53 54114 Crivitz
51 53179 Kenosha
49 54729 Eau Claire
49 54983 Weyauwega
47 54843 Hayward
45 53541 Gratiot
44 54526 Glen Flora
44 54104 Athelstane
42 54138 Lakewood
42 54174 Suring
41 53142 Kenosha
39 54455 Wausau
39 54156 Pembine
38 54451 Wausau
38 53157 Pell Lake
37 53406 Racine
37 53562 Madison
37 53808 Dickeyville
37 54982 Wautoma
37 54733 Dallas
36 53098 Watertown
35 53585 Janesville
35 53965 Wisconsin Dells
34 54143 Marinette
34 54211 Ephraim
34 53167 Racine
33 53518 Blue River
33 54652 Readstown
33 53237 Milwaukee
31 54861 Odanah
31 54401 Wausau
30 54208 Green Bay
29 54217 Green Bay
29 54520 Crandon
29 54812 Barron
29 53182 Racine
28 53946 Fond Du Lac
28 53517 Madison
27 54210 Ellison Bay
27 54637 Hustler
27 54766 Sheldon
27 53121 Elkhorn
26 53705 Madison
26 54204 Brussels
26 54701 Eau Claire
26 54941 Green Lake
25 53192 Kenosha
24 53811 Hazel Green
24 53949 Montello
24 54409 Wausau
24 54424 Deerbrook
24 54514 Butternut
24 54984 Stevens Point
24 53525 Janesville
23 54730 Colfax
23 54771 Thorp
23 54929 Appleton
23 53120 Racine
22 53587 South Wayne
22 54449 Wausau
22 54556 Prentice
22 53108 Racine
21 53952 Oxford
21 54216 Kewaunee
21 54501 Rhinelander
21 53190 Janesville
20 54102 Amberg
20 54125 Goodman
20 54130 Green Bay
20 54157 Peshtigo
20 54562 Three Lakes
20 54631 Gays Mills
20 54971 Oshkosh
20 53202 Milwaukee
19 53597 Madison
19 53704 Madison
19 53806 Cassville
19 54016 Hudson
19 54128 Gresham
19 54822 Cameron
19 54956 Appleton
19 53156 Watertown
18 53402 Racine
18 53533 Dodgeville
18 53820 Potosi
18 54205 Casco
18 54923 Oshkosh
18 54930 Coloma
18 54981 Stevens Point
18 53050 Mayville
17 54165 Green Bay
17 54213 Forestville
17 54402 Wausau
17 54474 Wausau
17 54940 Appleton
17 53126 Milwaukee
16 53802 Beetown
16 54435 Merrill
16 54814 Bayfield
16 54986 Oshkosh
16 53038 Watertown
15 53085 Sheboygan
15 53511 Janesville
15 53522 Browntown
15 54107 Appleton
15 54566 Wabeno
15 54660 Tomah
15 53534 Madison
14 53955 Poynette
14 54150 Neopit
14 54460 Owen
14 54491 White Lake
14 54742 Eau Claire
14 54867 Radisson
14 53130 Milwaukee
13 53211 Milwaukee
13 53932 Fall River
13 53964 Westfield
13 54177 Wausaukee
13 54419 Conover
13 54603 La Crosse
13 54759 Pepin
13 54801 Spooner
13 54847 Iron River
13 54904 Oshkosh
13 54911 Appleton
13 54952 Oshkosh
13 53024 Grafton
12 53191 Williams Bay
12 53536 Janesville
12 53538 Janesville
12 53706 Madison
12 53801 Bagley
12 53954 Pardeeville
12 54106 Appleton
12 54110 Green Bay
12 54115 Green Bay
12 54645 Mt Sterling
12 54751 Menomonie
12 54817 Birchwood
12 54914 Appleton
12 54915 Appleton
12 54944 Appleton
12 53014 Fond Du Lac
11 53139 Racine
11 53217 Milwaukee
11 53546 Janesville
11 53555 Madison
11 53582 Ridgeway
11 53713 Madison
11 53924 Cazenovia
11 54151 Niagara
11 54161 Pound
11 54201 Algoma
11 54234 Sister Bay
11 54311 Green Bay
11 54494 Wisconsin Rapids
11 54540 Land O Lakes
11 54541 Laona
11 54638 Kendall
11 54724 Bloomer
11 54761 River Falls
11 54935 Fond Du Lac
11 54943 Hancock
11 54963 Oshkosh
11 54966 Stevens Point
11 53125 Fontana
10 53168 Kenosha
10 53523 Madison
10 53577 Plain
10 53578 Prairie Du Sac
10 53583 Madison
10 53807 Cuba City
10 53821 Prairie Du Chien
10 53901 Portage
10 53913 Baraboo
10 53941 Lavalle
10 53956 Randolph
10 54480 Wausau
10 54548 Minocqua
10 54568 Woodruff
10 54602 La Crosse
10 54622 Cochrane
10 54644 La Crosse
10 54656 La Crosse
10 54667 La Crosse
10 54805 Almena
10 54913 Appleton
10 54964 Oshkosh
10 53115 Delavan
9 53147 Lake Geneva
9 53184 Walworth
9 53507 Madison
9 53516 Madison
9 53805 Boscobel
9 53916 Beaver Dam
9 54166 Shawano
9 54215 Manitowoc
9 54241 Manitowoc
9 54313 Green Bay
9 54728 Chetek
9 54912 Appleton
9 54931 Appleton
9 53060 Newburg
8 53213 Milwaukee
8 53563 Janesville
8 53565 Mineral Point
8 53575 Madison
8 53594 Madison
8 53812 Kieler
8 53813 Lancaster
8 53934 Friendship
8 54001 Amery
8 54020 Osceola
8 54121 Florence
8 54173 Green Bay
8 54175 Townsend
8 54229 Green Bay
8 54479 Wausau
8 54546 Mellen
8 54549 Jefferson
8 54625 Dodge
8 54703 Eau Claire
8 54840 Grantsburg
8 54891 Washburn
8 54901 Oshkosh
8 54960 Neshkoro
8 54968 Princeton
8 54979 Oshkosh
8 53006 Fond Du Lac
7 53057 Fond Du Lac
7 53081 Sheboygan
7 53158 Kenosha
7 53405 Racine
7 53540 Gotham
7 53579 Reeseville
7 53593 Madison
7 53715 Madison
7 53930 Endeavor
7 53960 Rio
7 54027 Wilson
7 54113 Appleton
7 54120 Kaukauna
7 54135 Keshena
7 54149 Mountain
7 54153 Oconto
7 54162 Green Bay
7 54405 Wausau
7 54408 Wausau
7 54456 Neillsville
7 54473 Wausau
7 54486 Tigerton
7 54555 Phillips
7 54563 Tony
7 54630 Galesville
7 54636 La Crosse
7 54646 Necedah
7 54658 La Crosse
7 54739 Eau Claire
7 54745 Holcombe
7 54754 Merrillan
7 54821 Cable
7 54848 Ladysmith
7 54874 Superior
7 54902 Oshkosh
7 53023 Sheboygan
6 53061 Fond Du Lac
6 53079 Sheboygan
6 53083 Sheboygan
6 53154 Milwaukee
6 53177 Racine
6 53532 Madison
6 53550 Juda
6 53569 Montfort
6 53572 Madison
6 53590 Madison
6 53744 Madison
6 53818 Platteville
6 53931 Fond Du Lac
6 53939 Kingston
6 53948 Mauston
6 54025 Somerset
6 54139 Lena
6 54180 Green Bay
6 54406 Stevens Point
6 54414 Wausau
6 54482 Stevens Point
6 54487 Merrill
6 54490 Westboro
6 54615 Black River Falls
6 54651 Ontario
6 54740 River Falls
6 54769 River Falls
6 54773 Whitehall
6 54871 Shell Lake
6 54893 Webster
6 54927 Oshkosh
6 54947 Oshkosh
6 54980 Oshkosh
6 54985 Oshkosh
6 52831 Prairie Du Chien
5 53049 Fond Du Lac
5 53073 Sheboygan
5 53094 Watertown
5 53097 Mequon
5 53104 Kenosha
5 53403 Racine
5 53508 Madison
5 53530 Darlington
5 53543 Highland
5 53544 Madison
5 53573 Muscoda
5 53574 Madison
5 53589 Madison
5 53711 Madison
5 53716 Madison
5 53719 Madison
5 53825 Stitzer
5 53911 Madison
5 53923 Cambria
5 53935 Friesland
5 54002 River Falls
5 54011 River Falls
5 54022 River Falls
5 54111 Cecil
5 54124 Gillett
5 54129 Hilbert
5 54140 Appleton
5 54301 Green Bay
5 54304 Green Bay
5 54411 Wausau
5 54436 Granton
5 54465 Pickerel
5 54476 Wausau
5 54484 Wausau
5 54521 Eagle River
5 54538 Lac Du Flambeau
5 54610 Alma
5 54655 Soldiers Grove
5 54665 Viroqua
5 54732 Cornell
5 54749 Knapp
5 54755 Eau Claire
5 54757 New Auburn
5 54767 River Falls
5 54768 Eau Claire
5 54770 Eau Claire
5 54772 Wheeler
5 54830 Superior
5 54846 Highbridge
5 54859 Superior
5 54868 Rice Lake
5 54896 Winter
5 54961 Appleton
5 53011 Sheboygan
4 53015 Sheboygan
4 53039 Juneau
4 53056 Merton
4 53128 Kenosha
4 53137 Watertown
4 53226 Milwaukee
4 53404 Racine
4 53502 Janesville
4 53515 Madison
4 53526 Cobb
4 53527 Madison
4 53528 Madison
4 53551 Watertown
4 53559 Madison
4 53560 Madison
4 53925 Madison
4 54101 Abrams
4 54103 Armstrong Creek
4 54112 Coleman
4 54126 Green Bay
4 54136 Appleton
4 54154 Oconto Falls
4 54170 Appleton
4 54220 Manitowoc
4 54247 Manitowoc
4 54303 Green Bay
4 54403 Wausau
4 54442 Merrill
4 54450 Mattoon
4 54457 Wisconsin Rapids
4 54470 Rib Lake
4 54475 Stevens Point
4 54485 Summit Lake
4 54524 Fifield
4 54534 Hurley
4 54550 Montreal
4 54554 Phelps
4 54611 Alma Center
4 54614 La Crosse
4 54618 Camp Douglas
4 54624 Desoto
4 54634 Hillsboro
4 54702 Eau Claire
4 54723 River Falls
4 54750 River Falls
4 54810 Balsam Lake
4 54841 Haugen
4 54978 Tilleda
4 53001 Sheboygan
3 53008 Brookfield
3 53016 Clyman
3 53048 Fond Du Lac
3 53093 Sheboygan
3 53132 Milwaukee
3 53171 Somers
3 53178 Watertown
3 53201 Milwaukee
3 53214 Milwaukee
3 53504 Argyle
3 53506 Avoca
3 53510 Belmont
3 53521 Madison
3 53529 Madison
3 53549 Watertown
3 53561 Merrimac
3 53584 Sextonville
3 53920 Briggsville
3 53926 Dalton
3 53950 New Lisbon
3 54004 Claytoon
3 54014 River Falls
3 54021 River Falls
3 54169 Sherwood
3 54214 Manitowoc
3 54302 Green Bay
3 54307 Green Bay
3 54407 Stevens Point
3 54416 Bowler
3 54426 Wausau
3 54427 Wausau
3 54428 Elcho
3 54444 Lublin
3 54448 Wausau
3 54467 Stevens Point
3 54498 Withee
3 54499 Wausau
3 54511 Argonne
3 54527 Glidden
3 54530 Hawkins
3 54537 Kennan
3 54552 Park Falls
3 54623 La Crosse
3 54629 Fountain City
3 54632 Genoa
3 54635 Hixton
3 54650 La Crosse
3 54653 La Crosse
3 54664 Viola
3 54725 Boyceville
3 54727 Eau Claire
3 54736 Durand
3 54813 Barronett
3 54819 Bruce
3 54820 Superior
3 54945 Stevens Point
3 5496O Neshkoro
3 54970 Redgranite
3 54974 Fond Du Lac
3 53004 Belgium
2 53013 Sheboygan
2 53020 Sheboygan
2 53031 Sheboygan
2 53042 Manitowoc
2 53044 Sheboygan
2 53065 Fond Du Lac
2 53070 Sheboygan
2 53080 Saukville
2 53088 Stockbridge
2 53129 Milwaukee
2 53209 Milwaukee
2 53503 Arena
2 53531 Madison
2 53537 Janesville
2 53545 Janesville
2 53548 Janesville
2 53558 Madison
2 53570 Monticello
2 53571 Madison
2 53592 Verona
2 53598 Madison
2 53703 Madison
2 53714 Madison
2 53717 Madison
2 53718 Madison
2 53726 Madison
2 53792 Madison
2 53809 Fennimore
2 53816 Mount Hope
2 53919 Fond Du Lac
2 53940 Lake Delton
2 53963 Fond Du Lac
2 54003 River Falls
2 54017 New Richmond
2 54024 St. Croix Falls
2 54028 Woodville
2 54123 Forest Junction
2 54152 Appleton
2 54159 Porterfield
2 54310 Green Bay
2 54412 Wausau
2 54423 Stevens Point
2 54433 Gilman
2 54440 Wausau
2 54447 Lublin
2 54462 Pearson
2 54471 Wausau
2 54547 Mercer
2 54659 Taylor
2 54669 La Crosse
2 54670 Wilton
2 54720 Eau Claire
2 54721 River Falls
2 54763 Ridgeland
2 54836 Superior
2 54837 Frederic
2 54838 Superior
2 54842 Superior
2 54849 Superior
2 54854 Superior
2 54864 Superior
2 54865 Port Wing
2 54870 Sarona
2 54873 Superior
2 54921 Stevens Point
2 54922 Appleton
2 54932 Fond Du Lac
2 54942 Appleton
2 54949 Manawa
2 54969 Readfield
2 45161 Pound
1 53032 Horicon
1 53102 Bristol
1 53114 Janesville
1 53148 Lyons
1 53170 Kenosha
1 53172 Milwaukee
1 53207 Milwaukee
1 53222 Milwaukee
1 53501 Janesville
1 53505 Janesville
1 53520 Janesville
1 53547 Janesville
1 53553 Linden
1 53554 Livingston
1 53556 Lone Rock
1 53557 Lowell
1 53566 Monroe
1 53576 Janesville
1 53580 Rewey
1 53586 Shullsburg
1 53803 Benton
1 53804 Bloomington
1 53910 Adams
1 53953 Packwaukee
1 53959 Reedsburg
1 53961 Rock Springs
1 53969 Wyocena
1 54005 Clear Lake
1 54023 Roberts
1 54141 Little Suamico
1 54228 Manitowoc
1 54230 Manitowoc
1 54410 Wisconsin Rapids
1 54421 Wausau
1 54422 Curtiss
1 54429 Elderon
1 54443 Wausau
1 54454 Stevens Point
1 54458 Stevens Point
1 54466 Wisconsin Rapids
1 54489 Wisconsin Rapids
1 54495 Wisconsin Rapids
1 54531 Hazelhurst
1 54536 Iron Belt
1 54558 St Germain
1 54616 Blair
1 54619 La Crosse
1 54626 Eastman
1 54628 Ferryville
1 54639 La Farge
1 54642 La Crosse
1 54649 Oakdale
1 54654 Seneca
1 54661 La Crosse
1 54726 Eau Claire
1 54735 Downsville
1 54741 Eau Claire
1 54748 Jim Falls
1 54758 Eau Claire
1 54760 Pigeon Falls
1 54824 Centuria
1 54826 Comstock
1 54850 La Pointe
1 54856 Mason
1 54858 Milltown
1 54862 Ojibwa
1 54872 Siren
1 54876 Stone Lake
1 54909 Stevens Point
1 54934 Eureka
1 54936 Fond Du Lac
1 54962 Ogdensburg
1 54965 Pine River
1 54977 Stevens Point
1