LAKE ST JOHN WATERWORKS DISTRICT 1
PWS ID: LA1029006 · FERRIDAY, Louisiana 71334
LAKE ST JOHN WATERWORKS DISTRICT 1 serves 2,067 people in FERRIDAY, Louisiana using Groundwater water sources. It has 731 recorded EPA violations, including 656 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: LAKE ST JOHN WATERWORKS DISTRICT 1
LAKE ST JOHN WATERWORKS DISTRICT 1 is a local-owned community water system that delivers drinking water to 2,067 residents in FERRIDAY, Louisiana (Concordia Parish County) through 689 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 731 total violations for this system , of which 656 (90%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 56 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.
The most frequently cited contaminant at this system is Total Haloacetic Acids (HAA5), recorded in 419 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
Across Louisiana, EPA tracks 1,234 public water systems serving 5,316,532 people, with 115,060 cumulative violations and 62,164 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 93.2 violations. LAKE ST JOHN WATERWORKS DISTRICT 1's 731 violations sit above the Louisiana average. Statewide, 218 of 265 UCMR5-tested systems have reported PFAS detections (82.3%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 689
- County
- Concordia Parish
- School/Daycare
- No
- MCL Violations
- 652
- Monitoring Violations
- 56
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 419 | 2023 |
| TTHM | MCL | 233 | 2023 |
| TTHM | MR | 25 | 2015 |
| Total Haloacetic Acids (HAA5) | MR | 25 | 2015 |
| Consumer Confidence Rule | Other | 7 | 2017 |
| Coliform (TCR) | MR | 6 | 2006 |
| Public Notice | Other | 4 | 2022 |
| Groundwater Rule | TT | 4 | 2021 |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for LAKE ST JOHN WATERWORKS DISTRICT 1.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID LA1029006 on SDWISSource: EPA SDWIS Federal Reports Search
Louisiana Drinking Water Authority
Louisiana's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.
Find LA regulator via EPA SDWISViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2023 | Total Haloacetic Acids (HAA5) | MCL | 419 | SDWIS / LA1029006 / 2456 |
| 2023 | TTHM | MCL | 233 | SDWIS / LA1029006 / 2950 |
| 2022 | Public Notice | Other | 4 | SDWIS / LA1029006 / 7500 |
| 2021 | Groundwater Rule | TT | 4 | SDWIS / LA1029006 / 0700 |
| 2017 | Consumer Confidence Rule | Other | 7 | SDWIS / LA1029006 / 7000 |
| 2015 | TTHM | MR | 25 | SDWIS / LA1029006 / 2950 |
| 2015 | Total Haloacetic Acids (HAA5) | MR | 25 | SDWIS / LA1029006 / 2456 |
| 2006 | Coliform (TCR) | MR | 6 | SDWIS / LA1029006 / 3100 |
How LAKE ST JOHN WATERWORKS DISTRICT 1 Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | LAKE ST JOHN WATERWORKS DISTRICT 1 | Louisiana avg | Federal benchmark |
|---|---|---|---|
| Total violations | 731 | 93.2 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 656 | 50.4 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 82.3% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 2,067 | 4,308 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,234 regulated public water systems in Louisiana.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for Louisiana
Read our methodology — how this data is sourced, computed, and verified.