Iowa Water Quality
1,076 water systems serving 3,000,306 people. 7,882 total violations on record.
Safety Grade Distribution
A
608
57%
B
146
14%
C
299
28%
D
10
1%
F
13
1%
1,076
Water Systems
3,000,306
Population Served
7,882
Total Violations
721
Health-Based
Most Contaminated Systems
MONTIPARK LLC
60 served417 violations293 recent
C
WEST WELL (WALFORD)
25 served127 violations78 recent
C
GLENN OAKS ADDITION
58 served189 violations57 recent
D
DEDHAM WATER SUPPLY
221 served97 violations55 recent
C
MCBRIDE POINTE THIRD MASTER MAINTENANCE
25 served65 violations52 recent
F
MALLARD WATER SUPPLY
257 served65 violations44 recent
F
FOX VALLEY ACRES
36 served43 violations43 recent
C
GRINNELL WATER DEPARTMENT
9,564 served42 violations42 recent
F
IOWA VALLEY ESTATES
46 served35 violations35 recent
F
BLAIRS FERRY MANOR
65 served45 violations35 recent
C
Cleanest Water Systems
DES MOINES WATER WORKS
246,055 served6 violations
A
IOWA-AMERICAN WTR CO-DAVENPORT
147,720 served0 violations
A
CEDAR RAPIDS WATER DEPARTMENT
141,831 served3 violations
A
ANKENY, CITY OF
76,207 served1 violations
A
WATERLOO WATER WORKS
69,504 served4 violations
A
IOWA CITY WATER DEPARTMENT
68,753 served1 violations
A
WEST DES MOINES WATER WORKS
68,723 served0 violations
A
COUNCIL BLUFFS WATER WORKS
64,447 served1 violations
A
DUBUQUE WATER WORKS
59,667 served0 violations
A
URBANDALE WATER UTILITY
45,605 served1 violations
A
Largest Water Systems in Iowa
| Water System | Grade | Population | Violations |
|---|---|---|---|
| DES MOINES WATER WORKS | A | 246,055 | 6 |
| IOWA-AMERICAN WTR CO-DAVENPORT | A | 147,720 | 0 |
| CEDAR RAPIDS WATER DEPARTMENT | A | 141,831 | 3 |
| SIOUX CITY WATER SUPPLY | C | 85,791 | 21 |
| ANKENY, CITY OF | A | 76,207 | 1 |
| WATERLOO WATER WORKS | A | 69,504 | 4 |
| IOWA CITY WATER DEPARTMENT | A | 68,753 | 1 |
| WEST DES MOINES WATER WORKS | A | 68,723 | 0 |
| COUNCIL BLUFFS WATER WORKS | A | 64,447 | 1 |
| DUBUQUE WATER WORKS | A | 59,667 | 0 |
| AMES WATER TREATMENT PLANT | B | 55,177 | 1 |
| URBANDALE WATER UTILITY | A | 45,605 | 1 |
| ISU | C | 42,000 | 7 |
| MARION MUNICIPAL WATER DEPT | A | 41,623 | 1 |
| CEDAR FALLS MUNICIPAL WATER UTILITIES | A | 40,713 | 0 |
| IA REGIONAL UTILITIES ASSOC (WAVERLY) | A | 37,820 | 0 |
| RATHBUN REGIONAL WATER ASSN (RATHBUN) | A | 33,000 | 187 |
| WAUKEE WATER SUPPLY | A | 31,823 | 1 |
| MARSHALLTOWN WATER WORKS | A | 27,591 | 0 |
| MASON CITY WATER DEPARTMENT | C | 27,338 | 8 |
Contaminants in Iowa
Cities in Iowa
DES MOINES(6)DAVENPORT(13)CEDAR RAPIDS(15)AMES(4)IOWA CITY(16)SIOUX CITY(2)ANKENY(10)WATERLOO(2)WEST DES MOINES(2)NEWTON(24)COUNCIL BLUFFS(1)DUBUQUE(12)CENTERVILLE(5)URBANDALE(1)OTTUMWA(3)MARION(3)CEDAR FALLS(2)CRESTON(6)INDIANOLA(2)MARSHALLTOWN(15)WAUKEE(1)MUSCATINE(24)FORT DODGE(19)BOUTON(6)MASON CITY(1)SPENCER(7)BURLINGTON(2)JOHNSTON(2)CLINTON(2)OSKALOOSA(5)CORALVILLE(3)TAMA(4)NORTH LIBERTY(2)ALTOONA(1)CLIVE(1)GRIMES(3)KNOXVILLE(7)NORWALK(1)GRINNELL(6)STORM LAKE(8)BOONE(1)CLARINDA(4)PELLA(2)FORT MADISON(1)LEMARS(1)WAVERLY(2)FAIRFIELD(2)CARROLL(1)CHEROKEE(3)KEOKUK(1)BONDURANT(1)DENISON(1)ELDRIDGE(3)MOUNT PLEASANT(1)MAY CITY(2)MANNING(4)DECORAH(2)SIOUX CENTER(1)WASHINGTON(6)PERRY(1)WEBSTER CITY(1)CLEAR LAKE(2)ROCK RAPIDS(5)CHARLES CITY(1)ADEL(2)AVOCA(3)HIAWATHA(2)ATLANTIC(1)MAQUOKETA(3)NEVADA(1)POLK CITY(2)GLENWOOD(3)ROCK VALLEY(2)ORANGE CITY(1)INDEPENDENCE(3)SPIRIT LAKE(1)OELWEIN(2)IRETON(2)ASBURY(1)ESTHERVILLE(1)DEWITT(3)ANAMOSA(3)RED OAK(1)SHELDON(1)OSCEOLA(1)ALGONA(1)WINTERSET(1)IOWA FALLS(2)SHENANDOAH(2)VINTON(2)MANCHESTER(1)HARLAN(1)SERGEANT BLUFF(1)HAMPTON(4)HUMBOLDT(3)CAMANCHE(1)EVANSDALE(1)MADRID(7)MOUNT VERNON(1)TIFFIN(1)