THORNTOWN UTILITIES
PWS ID: IN5206005 · THORNTOWN, Indiana 46071
THORNTOWN UTILITIES serves 1,600 people in THORNTOWN, Indiana using Groundwater water sources. It has 51 recorded EPA violations, including 18 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: THORNTOWN UTILITIES
THORNTOWN UTILITIES is a local-owned community water system that delivers drinking water to 1,600 residents in THORNTOWN, Indiana (Boone County) through 676 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 51 total violations for this system , of which 18 (35%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 23 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is Coliform (TCR), recorded in 18 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Indiana, EPA tracks 3,967 public water systems serving 5,774,616 people, with 352,710 cumulative violations and 35,932 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 88.9 violations. THORNTOWN UTILITIES's 51 violations sit below the Indiana average. Statewide, 93 of 229 UCMR5-tested systems have reported PFAS detections (40.6%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 676
- County
- Boone
- School/Daycare
- No
- MCL Violations
- 18
- Monitoring Violations
- 23
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 18 | 2002 |
| Coliform (TCR) | MR | 10 | 2014 |
| Consumer Confidence Rule | Other | 5 | 2025 |
| TTHM | MR | 4 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2014 |
| Revised Total Coliform Rule | MON | 3 | 2019 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 1987 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2025 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for THORNTOWN UTILITIES.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID IN5206005 on SDWISSource: EPA SDWIS Federal Reports Search
Indiana Drinking Water Authority
Indiana Department of Environmental Management — Drinking Water Branch is the primacy agency that licenses and inspects THORNTOWN UTILITIES under EPA-delegated authority.
Open IN regulator portalSource: Indiana Department of Environmental Management — Drinking Water Branch
Violation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2025 | Consumer Confidence Rule | Other | 5 | SDWIS / IN5206005 / 7000 |
| 2025 | LEAD AND COPPER RULE REVISIONS | RPT | 1 | SDWIS / IN5206005 / 5200 |
| 2019 | Revised Total Coliform Rule | MON | 3 | SDWIS / IN5206005 / 8000 |
| 2014 | Coliform (TCR) | MR | 10 | SDWIS / IN5206005 / 3100 |
| 2014 | TTHM | MR | 4 | SDWIS / IN5206005 / 2950 |
| 2014 | Total Haloacetic Acids (HAA5) | MR | 4 | SDWIS / IN5206005 / 2456 |
| 2002 | Coliform (TCR) | MCL | 18 | SDWIS / IN5206005 / 3100 |
| 1987 | Gross Alpha, Excl. Radon and U | MR | 2 | SDWIS / IN5206005 / 4000 |
How THORNTOWN UTILITIES Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | THORNTOWN UTILITIES | Indiana avg | Federal benchmark |
|---|---|---|---|
| Total violations | 51 | 88.9 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 18 | 9.1 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 40.6% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 1,600 | 1,456 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,967 regulated public water systems in Indiana.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for Indiana
Read our methodology — how this data is sourced, computed, and verified.