Wisconsin Drinking Water Violations

10,988Water Systems
37,176Total Violations
3,773Health-Based
CountyWater SystemsTotal ViolationsHealth-Based
Waukesha 590 2,944 1,235
Adams 200 294 96
Rock 156 304 94
Walworth 252 1,091 91
Racine 195 1,470 88
Door 454 3,786 83
Dodge 180 342 82
Marathon 195 544 76
Columbia 141 408 74
Jefferson 194 399 73
Monroe 97 254 70
Fond Du Lac 211 626 66
Washington 268 833 63
Ashland 82 253 63
Dane 301 760 61
Sauk 199 347 52
Winnebago 152 196 50
Kenosha 227 1,616 49
Grant 89 669 49
Lincoln 97 313 49
Ozaukee 252 773 46
Langlade 111 407 46
Portage 150 342 44
La Crosse 125 388 42
Marinette 191 1,515 41
Barron 190 492 40
Brown 149 284 40
St. Croix 164 486 39
Sheboygan 215 296 39
Trempealeau 75 496 38
Iowa 77 527 35
Vernon 66 409 35
Clark 95 305 34
Rusk 86 443 32
Waupaca 208 951 31
Douglas 189 365 31
Chippewa 219 395 29
Lafayette 40 235 27
Manitowoc 143 401 26
Taylor 60 256 25
Iron 57 120 24
Eau Claire 111 614 23
Vilas 466 333 23
Forest 57 205 23
Dunn 85 386 22
Pierce 95 171 21
Oconto 203 758 20
Richland 38 263 20
Calumet 49 233 20
Sawyer 192 336 18
Crawford 48 218 18
Waushara 196 600 17
Juneau 144 480 17
Polk 186 194 17
Oneida 346 356 16
Jackson 102 292 16
Florence 44 138 16
Pepin 22 76 16
Bayfield 190 855 15
Shawano 115 474 15
Washburn 130 183 15
Outagamie 107 442 13
Buffalo 70 169 13
Price 75 194 11
Wood 148 170 11
Green 52 141 10
Marquette 155 416 9
Kewaunee 72 369 9
Milwaukee 85 343 9
Green Lake 71 302 9
Burnett 192 130 3