F11/100
WALNUT BAYOU WATER ASSOCIATION — Water Quality Report 2026
Serving 3,531 people · Louisiana
Water Source
Groundwater
County
—
System ID
LA1065004
Violations
26
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
7
Violations (last 5yr)
6
Unresolved
5
Health-Related
TIER 2Unresolved
Violation related to Consumer Confidence Report
When: August 8, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Violation related to Consumer Confidence Report
When: August 8, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Violation related to Consumer Confidence Report
When: August 8, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Violation related to Consumer Confidence Report
When: August 8, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Violation related to Consumer Confidence Report
When: August 8, 2025Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – June 5, 2024Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About WALNUT BAYOU WATER ASSOCIATION
Is WALNUT BAYOU WATER ASSOCIATION water safe to drink?
WALNUT BAYOU WATER ASSOCIATION water receives a grade of F (11/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 26 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WALNUT BAYOU WATER ASSOCIATION detected?
2 contaminants were tested in WALNUT BAYOU WATER ASSOCIATION's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does WALNUT BAYOU WATER ASSOCIATION have any EPA violations?
Yes, WALNUT BAYOU WATER ASSOCIATION has 26 EPA violation(s) on record, with the most recent in 2025. Violation types include TT, RPT, Other. 13 are health-based violations.
How many people does WALNUT BAYOU WATER ASSOCIATION serve?
WALNUT BAYOU WATER ASSOCIATION serves approximately 3,531 people, Louisiana.
What type of water does WALNUT BAYOU WATER ASSOCIATION provide?
WALNUT BAYOU WATER ASSOCIATION sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is LA1065004.
How does WALNUT BAYOU WATER ASSOCIATION compare to other utilities in Louisiana?
WALNUT BAYOU WATER ASSOCIATION scores 11/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Louisiana state page for a full comparison of water systems.