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EWG's Tap Water Database — 2019 UPDATE

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Iowa

  • 1,079 Utilities

  • Serving: 2,769,000

  • Data available: 2012-2017

  • Contaminants Found: 85

 

EWG's drinking water quality report for Iowa shows results of tests conducted by the water utilities in Iowa and provided to EWG by the Iowa Department of Natural Resources.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Iowa serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Iowa

UtilityLocationPeople
Served
Altoona Water SupplyAltoona, IA14,541
Ames Water Treatment PlantAmes, IA50,029
Boone Water WorksBoone, IA12,909
Burlington Municipal WaterworksBurlington, IA25,619
Carroll Municipal Water SupplyCarroll, IA10,103
Cedar Falls Municipal Water UtilitiesCedar Falls, IA39,260
Cedar Rapids Water DepartmentCedar Rapids, IA128,201
Central IA Water Assn (Waverly)Newton, IA34,245
City of AnkenyAnkeny, IA54,598
Clive Water DepartmentClive, IA15,447
Coralville Muni Water SystemCoralville, IA18,907
Council Bluffs Water WorksCouncil Bluffs, IA63,795
Des Moines Water WorksDes Moines, IA233,020
Dubuque Water WorksDubuque, IA57,637
Fort Dodge Water SupplyFort Dodge, IA25,206
Ft Madison Muni Water WorksFort Madison, IA11,378
Indianola Water SupplyIndianola, IA14,782
Iowa City Water DepartmentIowa City, IA63,265
Iowa-American Water Co-Clinton DistrictClinton, IA26,885
Iowa-American Water Company - DavenportDavenport, IA137,201
ISUAmes, IA31,453
Johnston Municipal Water SupplyJohnston, IA17,306
Keokuk Municipal Water WorksKeokuk, IA10,780
Marion Municipal Water DepartmentMarion, IA34,610
Marshalltown Water WorksMarshalltown, IA27,612
Mason City Water DepartmentMason City, IA28,079
Muscatine Power & WaterMuscatine, IA24,386
Newton Water SupplyNewton, IA16,262
North Liberty Water SupplyNorth Liberty, IA13,386
Oskaloosa Municipal Water DepartmentOskaloosa, IA12,173
More

Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Iowa

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Chariton Municipal Water WorksChariton, IA4,321349
Gallery Acres WestSolon, IA4392
Sheldahl Water SupplySheldahl, IA31950
Dyersville Municipal Water CompanyDyersville, IA4,05846
Waldenburg Community Water SystemSwisher, IA9035
Louisa Courts Mobile Home Park & SalesMuscatine, IA12134
Wellman Municipal WaterworksWellman, IA1,40831
Westcott Heights Parts 1 & 2Davenport, IA6328
Fairbank Water SupplyFairbank, IA1,11825
Bellevue Municipal UtilitiesBellevue, IA2,19125
Macbride Pointe Second AdditionKalona, IA2525
Fairway OaksMuscatine, IA9820
Boone Water WorksBoone, IA12,90920
Revelle 1st & 2nd SubdivisionBlue Grass, IA5419
Elliott Water SupplyElliott, IA35018
Lakewood UtilitiesFort Dodge, IA20018
Little Bear CampgroundTipton, IA4517
Sirwa #1 (greenfield)Creston, IA1,84017
Corning Muni Water DepartmentCorning, IA1,63516
Leon Water SupplyLeon, IA1,97716
University Water SystemIowa City, IA26,68416
Farley Water SupplyFarley, IA1,53715
Marquette Water SupplyMarquette, IA46215
Parnell Water SupplyParnell, IA19313
Brighton Municipal Water SupplyBrighton, IA65213
Williamsburg Public Water SupplyWilliamsburg, IA3,06811
Deer Creek Subdivision (fort Dodge)Fort Dodge, IA5211
Mahaska Rural Water System Inc.Oskaloosa, IA7,37311
Iowa Lakes Regional Water - Lakes AreaSpencer, IA4,76210
Fredericksburg Water SupplyFredericksburg, IA93110

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Iowa

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Boone Water WorksBoone, IA12,90920
University Water SystemIowa City, IA26,68416
Marion Municipal Water DepartmentMarion, IA34,6106
Altoona Water SupplyAltoona, IA14,5411
Warren Water DistrictIndianola, IA18,0451

Contaminants found in Iowa above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
7062,512,8137062,512,813

Bromodichloromethane
6832,448,6706842,449,895

Chloroform
7322,439,5417512,531,934

Dichloroacetic acid
6662,388,7216682,415,206

Dibromochloromethane
6172,237,2866172,237,286

Trichloroacetic acid
5952,120,1286002,288,393

Nitrate
5212,016,1466182,187,113

Haloacetic acids (HAA5)
5021,999,0345021,999,034

Dibromoacetic acid
5061,967,0745061,967,074

Chromium (hexavalent)
1501,616,0011731,690,159

Bromoform
2941,338,2793671,720,959

Radium, combined (-226 & -228)
557995,779548991,378

Arsenic
125382,972122381,520

Atrazine
42260,78562853,327

Chlorite
33202,80022195,633

Chlorate
16173,8781391,297,716

Tetrachloroethylene (perchloroethylene)
986,478886,070

Trichloroethylene
375,360375,360

Strontium
471,2461891,873,764

Uranium
3143,0383544,843

Manganese
1526,9811934,174

1,4-Dioxane
49,27250680,646

Chloromethane
58,77599,624

Vinyl chloride
88,27288,272

Simazine
27,5022758,839

Nitrate and nitrite
13,78513,785

Bromochloroacetic acid
13,78513,785

Thallium
22,40922,409

1,2-Dichloroethane
22,32822,328

Styrene
21,97132,532

Benzene
17851785

Barium
1350155261,241

Selenium
12665499,094

Contaminants found in Iowa above legal limits

Contaminant# of UtilitiesPeople Served

Radium, combined (-226 & -228)
831,492

Haloacetic acids (HAA5)
2675

Arsenic
268