Community Water System · PWS MO4010087
Bonne Terre PWS
Operator location Bonne Terre, Missouri - 88% of 521 violations are health-based (upper-third health share (> 23%)); groundwater source; 3,537 served per SDWIS.
- 3,537
- People served (this PWS)
- 521
- EPA violations (this PWS)
- 460
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Bonne Terre PWS standing, high SDWIS violation third
88% of 521 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 88% is upper-third health share (> 23%). UCMR5: UCMR5 tested, none detected. Population rank #9,540 of 29,740 among systems serving 500+.
The verdict
Bonne Terre PWS sits in the upper third of the sitemap cohort by violation count (521), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (3,537; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 88% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #9,540 of 29,740
- Population · /systems
- #202 of 738
- Population · MO
- 521
- Total EPA violations on record
- 88%
- 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
- 1,597
- County
- St. Francois
- School/Daycare
- No
- MCL Violations
- 460
- Monitoring Violations
- 43
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 287 | 2016 |
| Gross Alpha, Excl. Radon and U | MCL | 169 | 2014 |
| Coliform (TCR) | MR | 21 | 2009 |
| Public Notice | Other | 7 | 2017 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2005 |
| Coliform (TCR) | MCL | 4 | 2009 |
| E. COLI | MR | 4 | 2018 |
| Combined Radium (-226 and -228) | MR | 3 | 2005 |
| Lead and Copper Rule | MR | 3 | 2012 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2008 |
| Radium-226 | MR | 2 | 2008 |
| Radium-228 | MR | 2 | 2008 |
| Combined Uranium | MR | 2 | 2008 |
Violation Count vs. the National Corpus
Bonne Terre PWS has 521 recorded EPA violations, 96% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 4% carry more. 88% of this system's own violations are health-based (460 of 521), and it ranks #9,540 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)
521 Higher than most more violations than 96% 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 |
|---|---|---|---|---|
| 9Cl-PF3ONS | 6/24/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFUnA | 6/24/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 6/24/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/24/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 6/24/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFHpA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 6/24/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 6/24/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 6/24/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/24/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 6/24/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFUnA | 6/24/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 6/24/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 6/24/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 6/24/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
Health-based violations on Bonne Terre PWS
460 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MO4010087.
Sources: EPA SDWIS · Missouri DNR, Public Drinking Water Branch
Nationwide peers
521 violations · 3,537 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 Bonne Terre PWS
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Missouri compares on the same EPA violation measures. Missouri 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.