Water Quality: Indianapolis, IN
20 water systems • 1,007,040 people served
Multiple Health ViolationsWater Quality Summary
Indianapolis is served by 20 public water systems with a combined service population of 1,007,040 people, and has 181 EPA Safe Drinking Water Act violations on record. Critically, 13 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Indianapolis's violation count is 319% above the national average for Indiana. Contaminants associated with violations include Disinfection Byproducts, E. coli, Stage 2 DBP, TTHM.
Contaminants Found
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
Water Systems Serving Indianapolis
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CITIZENS WATER - INDIANAPOLIS | IN5249004 | Surface Water | 880,345 | 4 |
| CITIZENS WATER OF WESTFIELD, LLC | IN5229009 | Groundwater | 61,493 | 8 |
| CITY OF LAWRENCE UTILITIES | IN5249005 | Groundwater | 49,000 | 7 |
| CITIZENS WATER - MORGAN | IN5255019 | Groundwater | 5,705 | 7 |
| NEW CASTLE CORRECTIONAL FACILITY | IN5233001 | Groundwater | 3,160 | 5 |
| MADISON STATE HOSPITAL | IN5239005 | Groundwater | 1,375 | 9 |
| AQUA INDIANA WATER COMPANY | IN5245017 | Groundwater | 1,350 | 6 |
| DARLINGTON WATER | IN5254003 | Groundwater | 860 | 6 |
| MOORESVILLE ACRES | IN5255017 | Groundwater | 752 | 4 |
| APPLE VALLEY UTILITIES, INC. | IN5245001 | Groundwater | 712 | 1 |
| INDIANA MASONIC HOME | IN5241010 | Groundwater | 654 | 37 |
| AQUA INDIANA - WEDGEWOOD PARK WATER UTIL | IN5271018 | Groundwater | 645 | 7 |
| WESTERN ESTATES MOBILE HOME PARK | IN5234002 | Groundwater | 248 | 14 |
| CHAIN O LAKES CORRECTIONAL FACILITY | IN5257023 | Groundwater | 186 | 17 |
| RICHMOND MOBILE HOME PARK | IN5289004 | Surface Water | 150 | 23 |
| VILLAGE GREEN MOBILE HOME PARK | IN5234009 | Groundwater | 102 | 13 |
| EMERALD II | IN5273005 | Groundwater | 98 | 8 |
| CREEKSIDE MOBILE HOME PARK | IN5273004 | Groundwater | 75 | 3 |
| AMERICAN MOBILE HOME PARK | IN5218016 | Surface Water | 65 | 0 |
| CITIZENS WATER OF WESTFIELD LLC | IN5248026 | Surface Water | 65 | 2 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Indiana
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.