Community Water System · PWS OH3500811
Napoleon City
Operator location Napoleon, Ohio - 89% of 106 violations are health-based (upper-third health share (> 23%)); surface water source; 8,858 served per SDWIS.
- 8,858
- People served (this PWS)
- 106
- EPA violations (this PWS)
- 94
- Health-based (this PWS)
- 3 PFAS
- UCMR5 (this PWS)
Napoleon City standing, high SDWIS violation third
89% of 106 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 89% is upper-third health share (> 23%). UCMR5: middle-third PFAS panel (≤ 4 compounds). Population rank #5,201 of 29,740 among systems serving 500+.
The verdict
Napoleon City sits in the upper third of the sitemap cohort by violation count (106), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (8,858; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 89% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 3 PFAS compounds (middle-third PFAS panel (≤ 4 compounds)).
- #5,201 of 29,740
- Population · /systems
- #182 of 931
- Population · OH
- 106
- Total EPA violations on record
- 89%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,720
- County
- Henry
- School/Daycare
- No
- MCL Violations
- 90
- Monitoring Violations
- 9
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 57 | 2008 |
| Nitrate | MCL | 33 | 2001 |
| CARBON, TOTAL | MR | 5 | 2005 |
| Surface Water Treatment Rule | TT | 4 | 2015 |
| Surface Water Treatment Rule | MR | 4 | 2019 |
Violation Count vs. the National Corpus
Napoleon City has 106 recorded EPA violations, 74% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 25% carry more. 89% of this system's own violations are health-based (94 of 106), and it ranks #5,201 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)
106 Around the middle fewer violations than 25% 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. 4 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFMPA | 8/13/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 8/13/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 8/13/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeA | 8/13/2024 | 3.30 ppt | 3.00 ppt | Detected |
| 9Cl-PF3ONS | 8/13/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHpS | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/13/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 8/13/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| HFPO-DA | 8/13/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 8/13/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 8/13/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/13/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 8/13/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| NFDHA | 8/13/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 8/13/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 6:2 FTS | 8/13/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 8/13/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 8/13/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 8/13/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 8/13/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 5/14/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 5/14/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/14/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFDoA | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 5/14/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 5/14/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 5/14/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFEESA | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 5/14/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| HFPO-DA | 5/14/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NEtFOSAA | 5/14/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 5/14/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 5/14/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| NFDHA | 5/14/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 5/14/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
Health-based violations on Napoleon City
94 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for OH3500811.
Sources: EPA SDWIS · Ohio EPA, Division of Drinking and Ground Waters
Nationwide peers
106 violations · 8,858 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Napoleon City
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Ohio compares on the same EPA violation measures. Ohio 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.