Water Quality in Iowa
EPA violation data for public water systems across Iowa.
978
ZIP Codes
3,336
Total Violations
500 (51%)
ZIPs with 0 Violations
3.4
Avg per ZIP
National avg: 18.87 violations per ZIP.
Iowa is 82% below average.
Violation Map
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0
1-5
6-15
16+
EPA violations (5yr)
Most Affected Areas in Iowa
All ZIP Codes in Iowa (978)
52322 Iowa City
117 52408 Cedar Rapids
82 52205 Cedar Rapids
75 52761 Muscatine
62 52247 Iowa City
55 52101 Decorah
44 52068 Dubuque
42 52314 Cedar Rapids
42 52351 Cedar Rapids
42 52404 Cedar Rapids
42 50112 Newton
41 52048 Garber
40 52057 Manchester
40 52060 Clinton
39 52003 Dubuque
38 52136 Cresco
35 52338 Cedar Rapids
35 52776 Iowa City
35 50501 Fort Dodge
33 51557 Mondamin
31 52040 Dubuque
31 52310 Cedar Rapids
31 51555 Council Bluffs
30 50021 Des Moines
29 52240 Iowa City
29 50450 Lake Mills
26 50703 Waterloo
26 52001 Dubuque
26 52002 Dubuque
25 52246 Iowa City
24 52556 Centerville
24 50658 Newton
23 52151 Lansing
23 52751 Clinton
23 51502 Council Bluffs
22 52655 Burlington
22 52738 Ottumwa
22 50158 Newton
21 51503 Council Bluffs
20 52753 Davenport
19 50327 Des Moines
18 50401 Mason City
18 50659 New Hampton
18 51010 Castana
18 52333 Iowa City
18 52749 Muscatine
18 50428 Mason City
17 50458 Mason City
17 51440 Dedham
17 51652 Sidney
17 52214 Cedar Rapids
17 52208 Belle Plaine
16 50464 Mason City
15 51040 Onawa
15 50208 Newton
14 50441 Hampton
14 52049 Garnavillo
14 52157 Mcgregor
14 52317 Iowa City
14 52344 Cedar Rapids
14 50436 Forest City
13 50456 Mason City
13 50461 Osage
13 52402 Cedar Rapids
13 52772 Tipton
13 50058 Coon Rapids
12 50548 Fort Dodge
12 50853 Creston
12 51108 Sioux City
12 52043 Elkader
12 52302 Cedar Rapids
12 52533 Ottumwa
12 52760 Muscatine
12 50541 Gilmore City
11 50616 Charles City
11 52171 Jackson Junction
11 52601 Burlington
11 52732 Clinton
11 52758 Davenport
11 50438 Garner
10 50533 Fort Dodge
10 50677 Newton
10 51545 Little Sioux
10 52053 Dubuque
10 50140 Centerville
9 50265 Des Moines
9 50562 Mallard
9 50601 Newton
9 51510 Council Bluffs
9 51533 Emerson
9 51559 Council Bluffs
9 52031 Dubuque
9 52071 Saint Donatus
9 52074 Spragueville
9 52213 Cedar Rapids
9 52301 Marengo
9 52353 Ottumwa
9 52766 Iowa City
9 50003 West Des Moines
8 50066 West Des Moines
8 50271 Williams
8 50598 Whittemore
8 50672 Newton
8 50845 Creston
8 52069 Clinton
8 52172 Waukon
8 52201 Ottumwa
8 52253 Cedar Rapids
8 52345 Urbana
8 52358 Iowa City
8 52361 Williamsburg
8 52405 Cedar Rapids
8 52722 Davenport
8 50002 Creston
7 50123 Centerville
7 50317 Des Moines
7 50434 Mason City
7 50466 Riceville
7 50470 Rowan
7 50511 Algona
7 50566 Fort Dodge
7 50606 Arlington
7 50701 Waterloo
7 51031 Lemars
7 51055 Sioux City
7 51501 Council Bluffs
7 51531 Elk Horn
7 52175 West Union
7 52215 Chelsea
7 52241 Iowa City
7 52411 Cedar Rapids
7 52804 Davenport
7 50126 Newton
6 50247 Ames
6 50278 Ames
6 50664 Oran
6 51535 Council Bluffs
6 51542 Council Bluffs
6 52142 Fayette
6 52149 Highlandville
6 52218 Cedar Rapids
6 52640 Burlington
6 52645 Burlington
6 52653 Wapello
6 52742 Clinton
6 52778 Muscatine
6 50014 Ames
5 50022 Atlantic
5 50071 Dows
5 50144 Centerville
5 50206 Ames
5 50244 Des Moines
5 50276 West Des Moines
5 50309 Des Moines
5 50423 Britt
5 50468 Mason City
5 50484 Woden
5 50535 Early
5 50568 Newell
5 50605 Newton
5 50630 Newton
5 51044 Sioux City
5 51054 Sioux City
5 51103 Sioux City
5 51360 Milford
5 51445 Ida Grove
5 51446 Irwin
5 51543 Kimballton
5 51546 Logan
5 51575 Council Bluffs
5 51579 Woodbine
5 52140 Dorchester
5 52362 Wyoming
5 52403 Cedar Rapids
5 52536 Ottumwa
5 52540 Centerville
5 52594 Centerville
5 52803 Davenport
5 52806 Davenport
5 50028 Newton
4 50105 Ames
4 50132 Kamrar
4 50134 Ames
4 50161 Des Moines
4 50248 Ames
4 50274 Wiota
4 50444 Mason City
4 50453 Leland
4 50525 Clarion
4 50528 Cylinder
4 50575 Pomeroy
4 50585 Sioux Rapids
4 50597 West Bend
4 50625 Newton
4 50636 Newton
4 50648 Waterloo
4 50651 Waterloo
4 50675 Waterloo
4 50854 Creston
4 51030 Sioux City
4 51060 Ute
4 51365 Wallingford
4 51450 Lake View
4 51529 Dunlap
4 51534 Glenwood
4 51572 Soldier
4 51632 Creston
4 52033 Dubuque
4 52064 Clinton
4 52073 Dubuque
4 52156 Luana
4 52159 Monona
4 52161 Ossian
4 52228 Cedar Rapids
4 52236 Amana
4 52306 Mechanicsville
4 52321 Lost Nation
4 52349 Vinton
4 52501 Ottumwa
4 52530 Ottumwa
4 52531 Ottumwa
4 52537 Ottumwa
4 52548 Ottumwa
4 52552 Ottumwa
4 52553 Ottumwa
4 52554 Ottumwa
4 52563 Ottumwa
4 52566 Ottumwa
4 52591 Sigourney
4 52726 Davenport
4 52748 Davenport
4 52807 Davenport
4 50039 West Des Moines
3 50047 Des Moines
3 50129 Jefferson
3 50166 Milo
3 50169 Des Moines
3 50213 Creston
3 50216 Panora
3 50218 Creston
3 50219 Pella
3 50238 Centerville
3 50243 Des Moines
3 50246 Stanhope
3 50249 Fort Dodge
3 50449 Mason City
3 50475 Mason City
3 50482 Mason City
3 50514 Armstrong
3 50563 Fort Dodge
3 50611 Newton
3 50628 Elma
3 50644 Independence
3 50645 Newton
3 51001 Akron
3 51019 Sioux City
3 51034 Sioux City
3 51050 Remsen
3 51106 Sioux City
3 51342 Graettinger
3 51364 Milford
3 51441 Deloit
3 51527 Defiance
3 51640 Hamburg
3 51653 Tabor
3 52052 Dubuque
3 52132 Calmar
3 52144 Fort Atkinson
3 52202 Cedar Rapids
3 52203 Cedar Rapids
3 52223 Delhi
3 52577 Oskaloosa
3 52646 Burlington
3 52729 Davenport
3 52747 Davenport
3 52756 Davenport
3 52777 Clinton
3 50010 Ames
2 50012 Ames
2 50013 Ames
2 50027 Barnes City
2 50046 Des Moines
2 50055 Ames
2 50056 Ames
2 50075 Ellsworth
2 50107 Grand Junction
2 50109 Des Moines
2 50111 Des Moines
2 50124 Des Moines
2 50130 Jewell
2 50131 Des Moines
2 50138 Knoxville
2 50154 Ames
2 50201 Ames
2 50226 Des Moines
2 50230 Ames
2 50236 Ames
2 50239 Ames
2 50266 Des Moines
2 50320 Des Moines
2 50426 Carpenter
2 50431 Coulter
2 50435 Floyd
2 50469 Mason City
2 50483 Wesley
2 50540 Fonda
2 50586 Fort Dodge
2 50593 Varina
2 50594 Fort Dodge
2 50613 Waterloo
2 50619 Newton
2 50627 Newton
2 50650 Lamont
2 51004 Sioux City
2 51006 Sioux City
2 51007 Sioux City
2 51015 Sioux City
2 51016 Sioux City
2 51018 Sioux City
2 51024 Hinton
2 51026 Sioux City
2 51028 Sioux City
2 51039 Sioux City
2 51048 Sioux City
2 51052 Sioux City
2 51056 Sioux City
2 51101 Sioux City
2 51104 Sioux City
2 51105 Sioux City
2 51109 Sioux City
2 51111 Sioux City
2 51232 Ashton
2 51247 Rock Valley
2 51354 May City
2 51358 Ruthven
2 51433 Auburn
2 51443 Glidden
2 51449 Lake City
2 51467 Westside
2 51541 Council Bluffs
2 51550 Malvern
2 51558 Moorhead
2 51566 Council Bluffs
2 51570 Council Bluffs
2 51650 Riverton
2 52032 Dubuque
2 52035 Colesburg
2 52045 Dubuque
2 52047 Farmersburg
2 52076 Strawberry Point
2 52141 Elgin
2 52170 Waterville
2 52206 Atkins
2 52233 Cedar Rapids
2 52244 Iowa City
2 52249 Keystone
2 52309 Monmouth
2 52339 Tama
2 52341 Cedar Rapids
2 52565 Centerville
2 52570 Centerville
2 52574 Centerville
2 52608 Peosta
2 52639 Montrose
2 52647 Olds
2 52649 Salem
2 52656 West Point
2 52752 Grandview
2 52767 Davenport
2 52768 Davenport
2 52802 Davenport
2 50008 Centerville
1 50009 Des Moines
1 50036 Boone
1 50050 Churdan
1 50060 Centerville
1 50062 Melcher-Dallas
1 50063 West Des Moines
1 50076 Exira
1 50115 Guthrie Center
1 50119 Harvey
1 50156 Des Moines
1 50263 West Des Moines
1 50321 Des Moines
1 50323 Des Moines
1 50421 Belmond
1 50433 Newton
1 50439 Goodell
1 50457 Mason City
1 50459 Northwood
1 50467 Mason City
1 50472 St. Ansgar
1 50473 Scarville
1 50477 Mason City
1 50479 Mason City
1 50480 Titonka
1 50516 Fort Dodge
1 50518 Fort Dodge
1 50521 Fort Dodge
1 50523 Fort Dodge
1 50524 Fort Dodge
1 50530 Fort Dodge
1 50532 Fort Dodge
1 50538 Fort Dodge
1 50539 Fenton
1 50543 Fort Dodge
1 50544 Fort Dodge
1 50554 Laurens
1 50557 Fort Dodge
1 50569 Fort Dodge
1 50571 Palmer
1 50578 Ringsted
1 50579 Rockwell City
1 50591 Fort Dodge
1 50595 Fort Dodge
1 50622 Newton
1 50629 Waterloo
1 50635 Newton
1 50641 Hazleton
1 50665 Newton
1 50841 Creston
1 51012 Cherokee
1 51020 Galva
1 51033 Linn Grove
1 51038 Merrill
1 51046 Paullina
1 51049 Quimby
1 51053 Schaller
1 51058 Sutherland
1 51235 Doon
1 51238 Hospers
1 51240 Inwood
1 51241 Larchwood
1 51244 Matlock
1 51245 Primghar
1 51250 Sioux Center
1 51338 Milford
1 51401 Carroll
1 51436 Breda
1 51448 Kiron
1 51454 Manilla
1 51462 Scranton
1 51465 Vail
1 51521 Council Bluffs
1 51525 Council Bluffs
1 51530 Earling
1 51532 Council Bluffs
1 51544 Council Bluffs
1 51554 Mineola
1 51561 Pacific Junction
1 51573 Stanton
1 52039 Dubuque
1 52044 Elkport
1 52065 Dubuque
1 52072 Saint Olaf
1 52075 Springbrook
1 52079 Dubuque
1 52154 Lawler
1 52162 Postville
1 52163 Protivin
1 52209 Blairstown
1 52224 Dysart
1 52245 Iowa City
1 52323 Clinton
1 52324 Cedar Rapids
1 52326 Quasqueton
1 52327 Iowa City
1 52330 Ryan
1 52336 Cedar Rapids
1 52359 Ottumwa
1 52542 Centerville
1 52626 Centerville
1 52654 Centerville
1 52739 Muscatine
1 52745 Davenport
1 52750 Clinton
1 52755 Iowa City
1 52773 Davenport
1