State Hub
Indiana Water Quality
513
Utilities in database
5.2M
Residents served
1
With open violations
219
PFAS monitored
Quick Answer
Indiana public drinking water is served by 513 EPA-tracked water systems, providing service to approximately 5.2 million residents through public utilities. 1 of those systems currently have open health-based violations on record in the EPA federal database. 219 systems have official PFAS monitoring records from the EPA UCMR 5 program (2023–2025). About 30% of IN residents use private wells, which fall outside federal utility compliance monitoring.
1 Indiana water system has an open health-based violation recorded in EPA SDWIS. An open violation means a contaminant exceeded a federal limit and the violation has not been formally resolved in the federal database. Check individual utility pages for current status.
Open Health-Based Violations in Indiana
Records sourced from EPA SDWIS. A record may be under review or resolved at the utility level but not yet updated in federal records. Water Utility Report does not determine whether water is safe to drink.
Drinking Water in Indiana
Indiana has 513 community water systems serving approximately 5.2 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead, nitrates. 30% of Indiana residents rely on private wells. IDEM holds primary enforcement authority under the Safe Drinking Water Act.
Highest Risk Utilities
Indiana systems with open health-based violations in EPA records.
Safest Large Utilities
Indiana systems with no open health violations serving 10,000+ residents.
Utilities in Indiana
301–325 of 513Churubusco Water Department
IN5292003 · 1,803 served
North Judson Water Company
IN5275003 · 1,800 served
Westville Water Department
IN5246029 · 1,800 served
Kingsford Heights Water
IN5246014 · 1,800 served
Everton Water Corporation
IN5221002 · 1,800 served
Frankton Water Works
IN5248008 · 1,800 served
Williamsport Water Utility
IN5286004 · 1,800 served
And-tro Water Authority - District 2
IN5262003 · 1,798 served
Bourbon Water Department
IN5250002 · 1,767 served
Kentland Water Works
IN5256005 · 1,735 served
Mapleturn Utilities, Inc.
IN5255004 · 1,725 served
Roanoke Water Works
IN5235009 · 1,722 served
Odon Water Utilities, Inc.
IN5214005 · 1,703 served
Ninestar Connect - Gem Water
IN5230008 · 1,700 served
Monon Water Utility
IN5291010 · 1,700 served
Hagerstown Municipal Water Works
IN5289008 · 1,700 served
Osgood Water Department
IN5269004 · 1,692 served
Argos Municipal Water Plant
IN5250001 · 1,680 served
Cannelton Utilities
IN5262002 · 1,658 served
Rossville Water Works
IN5212007 · 1,653 served
Dale Water Works
IN5274002 · 1,637 served
Maysville Region. Water & Sewer District
IN5202037 · 1,634 served
New Harmony Water Utility
IN5265007 · 1,633 served
Gentryville Water Utility
IN5274004 · 1,625 served
Woodburn Water Works
IN5202024 · 1,609 served
Key Contaminant Concerns in Indiana
These contaminants appear most frequently in Indiana utility records or pose elevated risk in this region based on EPA data.
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing. Critically, a utility's water quality report can show zero detected lead at the treatment plant while your specific tap still delivers elevated lead — because the contamination happens inside the distribution system and your home's plumbing, not at the source.
EPA limit: 15 ppb (action level)
Nitrates
Nitrate (NO₃⁻) is a nitrogen-containing compound that forms naturally through the decomposition of organic matter. At elevated concentrations — almost always caused by human activity — nitrate is converted in the digestive system to nitrite, which then reacts with hemoglobin to form methemoglobin, a form of hemoglobin that cannot carry oxygen. In the body, nitrite also reacts with amines in food to form N-nitroso compounds (nitrosamines) — known carcinogens classified by the IARC as Group 2A (probable human carcinogens). The United States applies over 23 million tons of nitrogen fertilizer annually, making agricultural runoff the dominant source of nitrate contamination in U.S. groundwater.
EPA limit: 10 mg/L
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
EPA limit: 80 µg/L (TTHMs) / 60 µg/L (HAA5)
City Water Reports in Indiana
Tap water quality pages for Indiana cities — violations, PFAS records, utility profiles, and official source links.
Independent Water Testing
Find a certified lab in Indiana
Utility compliance records show what water systems report to the EPA. An independent test from a certified laboratory confirms what's actually in your tap water. Indiana labs can test for PFAS, lead, nitrates, bacteria, and dozens of other contaminants.
Explore Water Quality in Indiana
Churubusco Water Department
Violation history, PFAS records, and official source links
North Judson Water Company
Violation history, PFAS records, and official source links
Westville Water Department
Violation history, PFAS records, and official source links
PFAS monitoring records — Indiana
219 water systems in Indiana with EPA UCMR 5 records
Active drinking water violations
1 open health-based violation on record — view official EPA SDWIS data
Lead in Indiana drinking water
State-specific lead data, violation utilities, and testing guidance
PFAS in Indiana drinking water
State-specific PFAS data, MCL context, and treatment options
Certified water testing labs in Indiana
Labs certified for PFAS (EPA 533/537.1), lead, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and filtration guides with cost ranges
Data sources and methodology
How WaterUtilityReport.com sources and validates official EPA data
Common Questions About Indiana Drinking Water
Does Indiana drinking water have PFAS?
219 Indiana water systems have EPA UCMR 5 PFAS monitoring records (2023–2025)
Which Indiana water utilities have open violations?
1 systems have open health-based violations in EPA SDWIS — search for your utility
How do I test my water in Indiana?
State-certified labs for PFAS (EPA 533/537.1), lead, nitrate, and bacteria testing
What treatment removes PFAS from IN tap water?
Reverse osmosis removes PFAS, lead, arsenic, and nitrates — cost, maintenance, and NSF certification explained
What do Indiana PFAS records tell me about my water?
EPA limits, health context, and what UCMR 5 detection above MRL means for your water
How is Indiana water quality data sourced here?
EPA SDWIS violations, UCMR 5 PFAS records, and CCR data — sources, accuracy notes, and limitations
Indiana Water FAQs
Data sources: Utility compliance and violation data from EPA SDWIS (Safe Drinking Water Information System). PFAS monitoring records from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). Contaminant data from EPA and ATSDR public references. This page summarizes public records — it is not a compliance determination. Methodology →
Last updated: 2026-04-19