The Power of Information

National Drinking Water Database


778 systems serving 4,630,253 people

This drinking water quality report shows results of tests conducted by water utilities in Indiana, provided to the Environmental Working Group (EWG) by the Indiana Department of Environmental Management. It is part of EWG's national database that includes 47,667 drinking water utilities and 20 million test results from 45 states and the District of Columbia. Water utilities nationwide detected more than 300 pollutants between 2004 and 2009. More than half of these chemicals are unregulated, legal in any amount. Despite this widespread contamination, the federal government invests few resources in protecting rivers, reservoirs, and groundwater from pollution in the first place. The information below summarizes drinking water quality for this state.

Water Utilities
Population Served
Detected Chemicals
Exceed health guidelines*
Exceed Legal Limits*
Unregulated chemicals detected
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

45 Contaminants Exceeding Health Based Limits

Contaminants detected in Indiana drinking water above health guidelines, according to an Environmental Working Group analysis of data obtained from state water authorities

Number of Systems
At Any Level Above Health Limits At Any Level Above Health Limits
Total haloacetic acids (HAAs)4,441,5574,441,557539539
Total trihalomethanes (TTHMs)4,484,2014,216,921570433
Arsenic (total)2,694,3002,694,300332332
Di(2-ethylhexyl) phthalate1,665,8541,665,8549999

Water Utilities in Indiana Reporting Chemicals Exceeding Health Guidelines

Water utilities in Indiana reporting chemicals exceeding health guidelines, according to an Environmental Working Group analysis of data obtained from state water authorities, include:

Chemicals tested
Chemicals found
Chemicals exceeding
health guidelines
Muscatatuck Urban Training Center114902817
South Bend Water Works113,400872512
Indianapolis Water 805,431892511
Anderson Water Department58,400852211
Salem Water Works6,719861810
Westfield Public Works18,152881910
Fort Wayne City Utilities- Three Rivers Filtration Plant250,000881910
Hillsdale Water Corporation60087149
Scottsburg Water Department6,80085139
Versailles Water Works1,78486139
Osgood Water Department1,68886149
Batesville Water Utility5,85686169
Mount Vernon Water Works8,91286189
Valparaiso Department of Water Works33,30087109
Salt Creek Services, Inc.9085159
Culver Educational Foundation85090129
Speedway Water Works11,07086179
Mitchell Water Department4,80084149
North Vernon Water Department6,50085159
Rensselaer Water Department6,26383169

Sources of Indiana Drinking Water Contaminants

The contaminants identified in Indiana drinking water come from a wide variety of sources, including agriculture, industry, water treatment plants, and polluted storm runoff from urban areas.

81Total Contaminants Detected (2004 - 2009)
29Agricultural Pollutants
(pesticides, fertilizer, factory farms)

Arsenic (total), Cyanide, Nitrate & nitrite, Nitrate, Nitrite, Selenium (total), Endrin, Lindane, Methoxychlor, Dalapon, Diquat, Endothall, Glyphosate, Simazine, Picloram, Dinoseb, Atrazine, Alachlor (Lasso), Heptachlor, Heptachlor epoxide, 2,4-D, 2,4,5-TP (Silvex), Bromomethane, 1,3-Dichloropropene, m-Dichlorobenzene, o-Dichlorobenzene, p-Dichlorobenzene, Monochlorobenzene (Chlorobenzene), Ethylbenzene

23Sprawl and Urban Pollutants
(road runoff, lawn pesticides, human waste)

Arsenic (total), Cadmium (total), Copper, Cyanide, Lead (total), Mercury (total inorganic), Nitrate & nitrite, Nitrate, Nitrite, Antimony (total), Lindane, Dalapon, Glyphosate, Di(2-Ethylhexyl) adipate, 2,4-D, 2,4,5-TP (Silvex), MTBE, Benzo[a]pyrene, Xylenes (total), Dichloromethane (methylene chloride), p-Dichlorobenzene, Tetrachloroethylene, Benzene

54Industrial Pollutants

Bromide, Arsenic (total), Barium (total), Cadmium (total), Chromium (total), Cyanide, Lead (total), Mercury (total inorganic), Nitrate & nitrite, Nitrate, Nitrite, Selenium (total), Antimony (total), Beryllium (total), Thallium (total), Lindane, Di(2-Ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Hexachlorocyclopentadiene, Chloromethane, Chloroethane, MTBE, Hexachlorobenzene (HCB), Pentachlorophenol, 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, Total polychlorinated biphenyls (PCBs), Dibromomethane, Xylenes (total), Dichloromethane (methylene chloride), o-Chlorotoluene, p-Chlorotoluene, m-Dichlorobenzene, p-Dichlorobenzene, Vinyl chloride, 1,1-Dichloroethylene, 1,1-Dichloroethane, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon tetrachloride, Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, Monochlorobenzene (Chlorobenzene), Benzene, Toluene, Ethylbenzene, Styrene, Alpha particle activity (excl radon and uranium), Combined Radium (-226 & -228), Radium-226, Radium-228, Gross beta particle activity (pCi/L)

15Water Treatment and Distribution Byproducts
(pipes and fixtures, treatment chemicals and byproducts)

Total trihalomethanes (TTHMs), Total haloacetic acids (HAAs), Chloroform, Bromodichloromethane, Dibromochloromethane, Bromoform, Di(2-ethylhexyl) phthalate, Cadmium (total), Chloromethane, Bromate, Vinyl chloride, Dibromomethane, Benzo[a]pyrene, Chloroethane, m-Dichlorobenzene

18Naturally Occurring
(naturally present but increased for lands denuded by sprawl, agriculture, or industrial development)

Nitrate, Copper, Nitrate & nitrite, Barium (total), Lead (total), Arsenic (total), Radium-228, Radium-226, Alpha particle activity (excl radon and uranium), Combined Radium (-226 & -228), Gross beta particle activity (pCi/L), Chromium (total), Selenium (total), Nitrite, Bromide, Mercury (total inorganic), Chloromethane, Cyanide

12Unregulated Contaminants
EPA has not established a maximum legal limit in tapwater for these contaminants

Bromide, Lead (total), Chloromethane, Bromomethane, Chloroethane, MTBE, Dibromomethane, 1,3-Dichloropropene, o-Chlorotoluene, p-Chlorotoluene, m-Dichlorobenzene, 1,1-Dichloroethane

Testing Summary for Indiana

The federal government has set standards for some of the pollutants found in tap water supplies.

Contaminants reported as tested by water suppliers in Indiana113
 Contaminants tested due to federal law: 79
 Contaminants tested in addition to those required by federal law: 34

Violation Summary for Indiana

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Indiana since 2004

Violation TypeNumber of Violations
Failure to monitor regularly2,883
Failure to monitor, Routine Major (Coliform bacteria)494
Over maximum contaminant level, Average252
Inadequate reporting of information to the public230
Maximum contaminant level, Monthly (Coliform bacteria)225
Monitoring and Reporting Disinfection Byproduct Rule203
Failure to monitor, Routine Minor (Coliform bacteria)76
Failure to report information to the public or state agency in the Consumer Confidence Report72
Follow-up and Routine Tap Sampling50
Failure to monitor, Repeat Major (Coliform bacteria)25
Initial Tap Sampling for Lead and Copper19
Excess Turbidity at 0.3 NTU17
Treatment Technique Precursor Removal15
Over maximum contaminant level, Single Sample14
Maximum contaminant level, Acute (Coliform bacteria)9
Failure to monitor, Repeat Minor (Coliform bacteria)8
Filter Turbidity Reporting7
Treatment Technique (Surface Water Treatment Rule)4
Excess Turbidity at 1 NTU4
Initial Water Quality Parameter Monitoring and Reporting1
Initial, Follow-up, or Routine Source Water Treatment Monitoring and Reporting1
Public Education1
Public Notification Violation for National Primary Drinking Water Regulations1