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TENSAS WATER DISTRICT ASSOCIATION

PWS ID: LA1107009 · ST JOSEPH, Louisiana 71336

TENSAS WATER DISTRICT ASSOCIATION serves 3,843 people in ST JOSEPH, Louisiana using Surface Water water sources. It has 173 recorded EPA violations, including 141 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: TENSAS WATER DISTRICT ASSOCIATION

TENSAS WATER DISTRICT ASSOCIATION is a private-owned community water system that delivers drinking water to 3,843 residents in ST JOSEPH, Louisiana (Tensas Parish County) through 1,268 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 173 total violations for this system , of which 141 (82%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 22 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Interim Enhanced Surface Water Treatment Rule, recorded in 44 violations (TT, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 0.0063 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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. TENSAS WATER DISTRICT ASSOCIATION's 173 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.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
3,843
Total Violations
173
Health-Based Violations
141
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
1,268
County
Tensas Parish
School/Daycare
No
MCL Violations
77
Monitoring Violations
22
Treatment Tech Violations
64

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule TT 44 2025
Total Haloacetic Acids (HAA5) MCL 43 2007
TTHM MCL 26 2006
CARBON, TOTAL TT 12 2005
Total Haloacetic Acids (HAA5) MR 9 2009
TTHM MR 9 2009
Coliform (TCR) MCL 8 2015
Surface Water Treatment Rule TT 8 2022
Interim Enhanced Surface Water Treatment Rule MR 4 2022
Consumer Confidence Rule Other 2 2008

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 9/12/2023 <0.008 µg/L 0.008 µg/L Not Detected
lithium 9/12/2023 <9 µg/L 9 µg/L Not Detected
PFTrDA 9/12/2023 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 9/12/2023 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 9/12/2023 <0.006 µg/L 0.006 µg/L Not Detected
4:2 FTS 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 8/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 8/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 8/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
8:2 FTS 8/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 8/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 8/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
11Cl-PF3OUdS 8/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 8/11/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFMPA 8/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 8/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 6/7/2023 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 6/7/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 6/7/2023 <0.005 µg/L 0.005 µg/L Not Detected
lithium 6/7/2023 <9 µg/L 9 µg/L Not Detected
HFPO-DA 6/7/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 6/7/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFEESA 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 6/7/2023 <0.02 µg/L 0.02 µg/L Not Detected
NEtFOSAA 6/7/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 6/7/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 6/7/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFPeS 6/7/2023 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 6/7/2023 <0.006 µg/L 0.006 µg/L Not Detected
PFHpA 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 6/7/2023 <0.003 µg/L 0.003 µg/L Not Detected

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 TENSAS WATER DISTRICT ASSOCIATION.

Federal Source of Truth

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 LA1107009 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

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 SDWIS

Violation 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
2025 Interim Enhanced Surface Water Treatment Rule TT 44 SDWIS / LA1107009 / 0300
2022 Surface Water Treatment Rule TT 8 SDWIS / LA1107009 / 0200
2022 Interim Enhanced Surface Water Treatment Rule MR 4 SDWIS / LA1107009 / 0300
2015 Coliform (TCR) MCL 8 SDWIS / LA1107009 / 3100
2009 Total Haloacetic Acids (HAA5) MR 9 SDWIS / LA1107009 / 2456
2009 TTHM MR 9 SDWIS / LA1107009 / 2950
2008 Consumer Confidence Rule Other 2 SDWIS / LA1107009 / 7000
2007 Total Haloacetic Acids (HAA5) MCL 43 SDWIS / LA1107009 / 2456
2006 TTHM MCL 26 SDWIS / LA1107009 / 2950
2005 CARBON, TOTAL TT 12 SDWIS / LA1107009 / 2920

How TENSAS WATER DISTRICT ASSOCIATION Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric TENSAS WATER DISTRICT ASSOCIATION Louisiana avg Federal benchmark
Total violations 173 93.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 141 50.4 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 82.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,843 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

Is TENSAS WATER DISTRICT ASSOCIATION water safe to drink? ▼
TENSAS WATER DISTRICT ASSOCIATION (PWS ID: LA1107009) has 173 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 3,843 people using Surface Water sources.
How many people does TENSAS WATER DISTRICT ASSOCIATION serve? ▼
TENSAS WATER DISTRICT ASSOCIATION serves 3,843 people in ST JOSEPH, Louisiana. It is a Private-owned system using Surface Water water sources with 1,268 service connections.
What type of violations does TENSAS WATER DISTRICT ASSOCIATION have? ▼
TENSAS WATER DISTRICT ASSOCIATION has 173 total violations: 141 health-based violations (MCL exceedances or treatment failures), 22 monitoring/reporting violations, and 64 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in TENSAS WATER DISTRICT ASSOCIATION water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in TENSAS WATER DISTRICT ASSOCIATION's water supply: PFBA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does TENSAS WATER DISTRICT ASSOCIATION use? ▼
TENSAS WATER DISTRICT ASSOCIATION uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial