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EWG's Tap Water Database — 2021 UPDATE

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Iowa

  • 1,084 Utilities

  • Serving: 2,771,000

  • Data available: 2014-2019

  • Contaminants Found: 84

 

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 2019 to March 2021 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
Gallery Acres WestSolon, IA4391
Macbride Pointe Third Master MaintenanceKalona, IA2560
Knapp Mobile Home Court No. 4Dubuque, IA6548
Mallard Water SupplyMallard, IA27740
Dedham Water SupplyDedham, IA26637
Plover Water SupplyStorm Lake, IA7735
Knierim Water SupplyKnierim, IA6020
Oak Ridge Lake EstatesCenter Point, IA8820
Keystone Water SupplyKeystone, IA62210
Valley View Water AssociationMissouri Valley, IA6510
Stockport Water SupplyStockport, IA2967
Southfork AssociationWalford, IA286
Armstrong Water SupplyArmstrong, IA9436
New Market Water SupplyNew Market, IA4155
Mccallsburg Water SupplyMc Callsburg, IA3335
Lanesboro Water WorksStorm Lake, IA1215
Woodward Resource CenterWoodward, IA1,3705
Sunset Hills Estates Part 2Kalona, IA455
Poweshiek Water Association (iac)Tama, IA2,0005
Craig Water WorksIreton, IA964
ShilohKalona, IA1183
Monti-view Mobile Home ParkMonticello, IA603
Massena Water SupplyMassena, IA3552
Granger Muni Water SupplyGranger, IA1,2442
Oak ValleyToddville, IA1542
Blairs Ferry ManorToddville, IA751
Woodward Water SupplyWoodward, IA1,4661
Crestwood AcresToddville, IA1421
Country Manor EstatesToddville, IA2281
Vern Acres (oliphant Addition)Toddville, IA1501

Large utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 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
Des Moines Water WorksDes Moines, IA233,0201

Contaminants found in Iowa above health guidelines

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

Total trihalomethanes (TTHMs)		7522,579,2377522,579,237

Bromodichloromethane		7132,487,6837132,487,683

Chloroform		7562,472,0617942,640,540

Dichloroacetic acid		7282,463,8837412,555,783

Haloacetic acids (HAA5)		6122,322,6746122,322,674

Dibromochloromethane		6652,295,4986652,295,498

Nitrate		6922,214,0307722,349,857

Trichloroacetic acid		6292,148,7876312,291,770

Dibromoacetic acid		5522,043,0875532,053,867

Haloacetic acids (HAA9)		1831,800,1261891,849,768

Chromium (hexavalent)		1611,621,3041811,693,615

Radium, combined (-226 & -228)		6471,586,0926261,576,222

Bromoform		3141,239,2274381,819,718

Arsenic		145759,850124746,239

Uranium		68534,46261530,915

Tetrachloroethylene (perchloroethylene)		40513,32728507,567

Antimony		32431,50842533,692

Chlorite		33339,79723332,834

Atrazine		52335,57676844,986

Chlorate		17174,9951451,301,243

Di(2-ethylhexyl) phthalate		567,324129292,277

Manganese		2246,8712421,852,958

Vinyl chloride		910,971910,971

1,4-Dioxane		49,27253683,069

Simazine		27,5023066,686

Bromochloroacetic acid		24,60813,785

Nitrate and nitrite		24,60813,785

Styrene		13,22113,221

Trichloroethylene		13,00813,008

1,2-Dichloroethane		22,54534,031

Glyphosate		1857114229,001

Benzene		17851785

Chloromethane		135372,495

Selenium		12662279,295

Thallium		1311028,671

Contaminants found in Iowa above legal limits

Contaminant# of UtilitiesPeople Served

Radium, combined (-226 & -228)		729,611

Arsenic		4422

Selenium		1266