Community Water System · PWS LA1085055
South Toledo Bend Water District
Operator location Many, Louisiana - 85% of 200 violations are health-based (upper-third health share (> 23%)); groundwater source; 5,943 served per SDWIS.
- 5,943
- People served (this PWS)
- 200
- EPA violations (this PWS)
- 169
- Health-based (this PWS)
- 1 PFAS
- UCMR5 (this PWS)
South Toledo Bend Water District standing, high SDWIS violation third
85% of 200 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 85% is upper-third health share (> 23%). UCMR5: lower-third PFAS panel (≤ 2 compounds). Population rank #6,888 of 29,740 among systems serving 500+.
The verdict
South Toledo Bend Water District sits in the upper third of the sitemap cohort by violation count (200), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (5,943; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 85% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 1 PFAS compound (lower-third PFAS panel (≤ 2 compounds)).
- #6,888 of 29,740
- Population · /systems
- #153 of 707
- Population · LA
- 200
- Total EPA violations on record
- 85%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 1,981
- County
- Sabine Parish
- School/Daycare
- No
- MCL Violations
- 162
- Monitoring Violations
- 22
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 138 | 2025 |
| Total Haloacetic Acids (HAA5) | MCL | 24 | 2024 |
| TTHM | MR | 8 | 2017 |
| Interim Enhanced Surface Water Treatment Rule | MR | 8 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2013 |
| CARBON, TOTAL | TT | 4 | 2007 |
| Consumer Confidence Rule | Other | 3 | 2008 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | TT | 3 | 2004 |
| Lead and Copper Rule | MR | 2 | 2024 |
Violation Count vs. the National Corpus
South Toledo Bend Water District has 200 recorded EPA violations, 85% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 15% carry more. 85% of this system's own violations are health-based (169 of 200), and it ranks #6,888 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)
200 Higher than most more violations than 85% 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. 3 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFPeS | 8/28/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 8/28/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 8/28/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 8/28/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NFDHA | 8/28/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFHpS | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 8/28/2023 | 5.60 ppt | 5.00 ppt | Detected |
| PFBS | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 8/28/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 8/28/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 8/28/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 8/28/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/28/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/28/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/28/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/28/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NEtFOSAA | 7/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 7/11/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 7/11/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NMeFOSAA | 7/11/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NMeFOSAA | 6/20/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 6/20/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 6/20/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 6/20/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 4/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 4/5/2023 | 8.20 ppt | 5.00 ppt | Detected |
| PFBS | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 4/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 4/5/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/5/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 6:2 FTS | 4/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOA | 4/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 4/5/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 4/5/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 4/5/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
Health-based violations on South Toledo Bend Water District
169 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for LA1085055.
Sources: EPA SDWIS
Nationwide peers
200 violations · 5,943 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 South Toledo Bend Water District
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Louisiana compares on the same EPA violation measures. Louisiana 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.