Community Water System · PWS LA1029005
Town of Ferriday Water System
Operator location Ferriday, Louisiana - 75% of 2,042 violations are health-based (upper-third health share (> 23%)); groundwater source; 4,193 served per SDWIS.
- 4,193
- People served (this PWS)
- 2,042
- EPA violations (this PWS)
- 1,533
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Town of Ferriday Water System standing, high SDWIS violation third
75% of 2,042 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 75% is upper-third health share (> 23%). UCMR5: UCMR5 tested, none detected. Population rank #8,606 of 29,740 among systems serving 500+.
The verdict
Town of Ferriday Water System sits in the upper third of the sitemap cohort by violation count (2,042), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (4,193; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 75% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #8,606 of 29,740
- Population · /systems
- #211 of 707
- Population · LA
- 2,042
- Total EPA violations on record
- 75%
- 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
- 1,510
- County
- Concordia Parish
- School/Daycare
- No
- MCL Violations
- 1,326
- Monitoring Violations
- 336
- Treatment Tech Violations
- 207
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 665 | 2025 |
| Total Haloacetic Acids (HAA5) | MCL | 611 | 2022 |
| CARBON, TOTAL | TT | 125 | 2016 |
| TTHM | MR | 104 | 2017 |
| Public Notice | Other | 103 | 2025 |
| Coliform (TCR) | MR | 77 | 2011 |
| Total Haloacetic Acids (HAA5) | MR | 76 | 2017 |
| Coliform (TCR) | MCL | 50 | 2013 |
| Groundwater Rule | TT | 47 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | TT | 34 | 2011 |
| Consumer Confidence Rule | Other | 32 | 2024 |
| CARBON, TOTAL | MR | 30 | 2010 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 15 | 2010 |
| Interim Enhanced Surface Water Treatment Rule | MR | 14 | 2011 |
| Lead and Copper Rule | MR | 13 | 2022 |
| Surface Water Treatment Rule | MR | 7 | 2004 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
Violation Count vs. the National Corpus
Town of Ferriday Water System has 2,042 recorded EPA violations, 100% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 0% carry more. 75% of this system's own violations are health-based (1,533 of 2,042), and it ranks #8,606 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)
2,042 Higher than most more violations than 99%+ 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 |
|---|---|---|---|---|
| NMeFOSAA | 9/17/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 9/17/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 9/17/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 9/17/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFMPA | 3/11/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 9Cl-PF3ONS | 3/11/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMBA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 3/11/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 3/11/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 3/11/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 3/11/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 3/11/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 3/11/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 3/11/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NEtFOSAA | 3/11/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 3/11/2024 | <2.00 ppt | 2.00 ppt | Not Detected |
| NMeFOSAA | 3/11/2024 | <6.00 ppt | 6.00 ppt | Not Detected |
| 4:2 FTS | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 3/11/2024 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFTA | 3/11/2024 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFPeA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 3/11/2024 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 3/11/2024 | <5.00 ppt | 5.00 ppt | Not Detected |
| NFDHA | 3/11/2024 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 3/11/2024 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 1/6/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 1/6/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 1/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 1/6/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 1/6/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeS | 1/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 1/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpA | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 1/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 1/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| HFPO-DA | 1/6/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
Health-based violations on Town of Ferriday Water System
1,533 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for LA1029005.
Sources: EPA SDWIS
Nationwide peers
2,042 violations · 4,193 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 Town of Ferriday Water System
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.