Community Water System · PWS IL0950050
Abingdon
Operator location Monmouth, Illinois - 83% of 109 violations are health-based (upper-third health share (> 23%)); groundwater source; 3,275 served per SDWIS.
- 3,275
- People served (this PWS)
- 109
- EPA violations (this PWS)
- 90
- Health-based (this PWS)
- 5 PFAS
- UCMR5 (this PWS)
Abingdon standing, high SDWIS violation third
83% of 109 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 83% is upper-third health share (> 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #10,002 of 29,740 among systems serving 500+.
The verdict
Abingdon sits in the upper third of the sitemap cohort by violation count (109), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 3,275 (mid served population (≤ 3,309)). Health-based share is 83% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 5 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #10,002 of 29,740
- Population · /systems
- #459 of 1,310
- Population · IL
- 109
- Total EPA violations on record
- 83%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
5 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,310
- County
- Knox
- School/Daycare
- No
- MCL Violations
- 90
- Monitoring Violations
- 5
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 34 | 1992 |
| Gross Alpha, Excl. Radon and U | MCL | 31 | 1989 |
| Fluoride | MCL | 13 | 1985 |
| Consumer Confidence Rule | Other | 12 | 2025 |
| TTHM | MCL | 12 | 2019 |
| Lead and Copper Rule | MR | 4 | 2017 |
| Public Notice | Other | 2 | 2018 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1977 |
Violation Count vs. the National Corpus
Abingdon has 109 recorded EPA violations, 75% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 25% carry more. 83% of this system's own violations are health-based (90 of 109), and it ranks #10,002 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)
109 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. 9 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 6/3/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| 8:2 FTS | 6/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 6/3/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| HFPO-DA | 6/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 6/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 6/3/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 6/3/2024 | 9.00 ppt | 3.00 ppt | Detected |
| PFMBA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 6/3/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 6/3/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| NMeFOSAA | 6/3/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFBA | 6/3/2024 | 46.00 ppt | 5.00 ppt | Detected |
| PFTA | 6/3/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/3/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFDA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 6/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFNA | 6/3/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/3/2024 | 9.40 ppt | 4.00 ppt | Detected |
| PFOS | 6/3/2024 | 4.80 ppt | 4.00 ppt | Detected |
| PFBS | 6/3/2024 | 3.20 ppt | 3.00 ppt | Detected |
| PFHxS | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 6/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 12/3/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMBA | 12/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 12/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 12/3/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 12/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 12/3/2024 | 10.00 ppt | 3.00 ppt | Detected |
| 8:2 FTS | 12/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 12/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 12/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 12/3/2024 | 50.00 ppt | 5.00 ppt | Detected |
| HFPO-DA | 12/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 12/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 12/3/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 12/3/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 12/3/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTA | 12/3/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| 9Cl-PF3ONS | 12/3/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 12/3/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 12/3/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTrDA | 12/3/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFBS | 12/3/2024 | 3.50 ppt | 3.00 ppt | Detected |
Health-based violations on Abingdon
90 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for IL0950050.
Sources: EPA SDWIS · Illinois EPA, Bureau of Water
Nationwide peers
109 violations · 3,275 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Abingdon
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Illinois compares on the same EPA violation measures. Illinois 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.