Public water system · LA1065004
ActiveWalnut Bayou Water Association
At a glance
Walnut Bayou Water Association (PWSID LA1065004) is an active community water system in Madison Parish County, Louisiana. It reports serving 3,531 people through 1,177 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,531
Service connections
1,177
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Walnut Bayou Water Association compare with other water systems in Madison Parish County?
By EPA's size categories, Walnut Bayou Water Association is a medium system (3,301 to 10,000 people). Madison Parish County has 4 active public water systems, and Walnut Bayou Water Association is the 2nd-largest of them by population served. Its population served is roughly in line with the county average of 3,386 people per system, and accounts for 26% of the 13,542 people reported by systems filed under the county. Across Louisiana, the 1,121 active systems average 4,685 people each. Nationally, the average active community water system reports serving 6,703 people, so Walnut Bayou Water Association is about half of that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Louisiana has 815 active community water systems, 73% of the state's 1,121 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 966 Louisiana systems (86%) list groundwater as their primary source.
Who owns and regulates Walnut Bayou Water Association?
EPA lists Walnut Bayou Water Association as privately owned. The LA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 4 active systems in Madison Parish County (50%) are also privately owned.
Does Walnut Bayou Water Association have drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in September 2025. The violations listed here began between March 2018 and September 2025. By type: 9 required treatment not met, 2 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Groundwater Rule (9 of them). EPA lists 7 as resolved and 5 as unaddressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-09-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-08-08 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-08 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-08 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-08 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-08 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2020-08-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-08-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-08-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2018-03-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Walnut Bayou Water Association: frequently asked questions
Who runs Walnut Bayou Water Association?
Walnut Bayou Water Association (PWSID LA1065004) is a community water system privately owned. It is regulated by the LA state drinking water program.
How many people does Walnut Bayou Water Association serve?
Walnut Bayou Water Association reports serving 3,531 people through 1,177 service connections in Madison Parish County, Louisiana.
Where does Walnut Bayou Water Association get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Walnut Bayou Water Association have any drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in September 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Walnut Bayou Water Association's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in September 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find Walnut Bayou Water Association's water quality report?
As a community water system, Walnut Bayou Water Association must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Madison Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Tallulah Water System | Madison Parish | 8,601 | Community | Groundwater |
| Bayou Macon Water System | Madison Parish | 1,041 | Community | Purchased groundwater |
| Village of Delta Water System | Madison Parish | 369 | Community | Purchased groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Walnut Bayou Water Association, PWSID LA1065004, Louisiana”, https://aquacensus.com/water-systems/louisiana/walnut-bayou-water-association-la1065004 (data as of October 1, 2026).