Community Water System · PWS IN5235012
Warren Municipal Water Works
Operator location Warren, Indiana - 6% of 50 violations are health-based (middle-third health share (≤ 23%)); groundwater source; 1,237 served per SDWIS.
- 1,237
- People served (this PWS)
- 50
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Warren Municipal Water Works standing, mid SDWIS violation third
6% of 50 recorded violations are health-based - middle-third health share (≤ 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 6% is middle-third health share (≤ 23%). UCMR5: UCMR5 tested, none detected. Population rank #17,556 of 29,740 among systems serving 500+.
The verdict
Warren Municipal Water Works lands in the middle third by violation volume (50), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,237 (mid served population (≤ 3,309)). Health-based share is 6% (middle-third health share (≤ 23%)). UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #17,556 of 29,740
- Population · /systems
- #398 of 788
- Population · IN
- 50
- Total EPA violations on record
- 6%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 639
- County
- Huntington
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 26
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 12 | 2024 |
| Coliform (TCR) | MR | 10 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2017 |
| Revised Total Coliform Rule | RPT | 6 | 2024 |
| TTHM | MR | 6 | 2017 |
| Groundwater Rule | TT | 3 | 2022 |
| Revised Total Coliform Rule | MON | 3 | 2025 |
| Nitrate | MR | 1 | 1979 |
Violation Count vs. the National Corpus
Warren Municipal Water Works has 50 recorded EPA violations, 56% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 43% carry more. 6% of this system's own violations are health-based (3 of 50), and it ranks #17,556 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
50 Around the middle fewer violations than 43% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFEESA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/7/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 8/7/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 8/7/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/7/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 8/7/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 8/7/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFMBA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 8/7/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NMeFOSAA | 8/7/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 8/7/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/7/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 8/7/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHxA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/7/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/7/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 8/7/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 8/7/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 8/7/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 8/7/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBS | 8/7/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 2/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NFDHA | 2/14/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeA | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 2/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeS | 2/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 2/14/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 2/14/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 2/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 2/14/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFOS | 2/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFBS | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 2/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 2/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFNA | 2/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 6:2 FTS | 2/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
Health-based violations on Warren Municipal Water Works
3 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for IN5235012.
Sources: EPA SDWIS · Indiana Department of Environmental Management, Drinking Water Branch
Nationwide peers
50 violations · 1,237 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Warren Municipal Water Works
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Indiana compares on the same EPA violation measures. Indiana systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.