Public water system · LA1111013
ActiveRocky Branch Water System
At a glance
Rocky Branch Water System (PWSID LA1111013) is an active community water system in Union Parish County, Louisiana. It reports serving 1,650 people through 550 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,650
Service connections
550
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Rocky Branch Water System compare with other water systems in Union Parish County?
By EPA's size categories, Rocky Branch Water System is a small system (501 to 3,300 people). Union Parish County has 18 active public water systems. Its population served is roughly in line with the county average of 1,767 people per system, and accounts for 5.2% of the 31,812 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 Rocky Branch Water System is well below 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 Rocky Branch Water System?
EPA lists Rocky Branch Water System as owned by a local government. 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. 6 of the 18 active systems in Union Parish County (33%) are also owned by a local government.
Does Rocky Branch Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in March 2026. The violations listed here began between April 2019 and March 2026. By type: 7 required treatment not met, 3 contaminant level above the legal limit, 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Groundwater Rule (7 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2026-03-26 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2022-11-16 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-10-07 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-10-07 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-10-07 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-01-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-01-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-01-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2020-01-24 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2019-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2019-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | 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.
Rocky Branch Water System: frequently asked questions
Who runs Rocky Branch Water System?
Rocky Branch Water System (PWSID LA1111013) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does Rocky Branch Water System serve?
Rocky Branch Water System reports serving 1,650 people through 550 service connections in Union Parish County, Louisiana.
Where does Rocky Branch Water System 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 Rocky Branch Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in March 2026. 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 Rocky Branch Water System'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, 10 are health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the LA state drinking water program.
Where can I find Rocky Branch Water System's water quality report?
As a community water system, Rocky Branch Water System 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 Union Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Town of Farmerville Water System | Union Parish | 5,352 | Community | Groundwater |
| Darbonne Ws South | Union Parish | 3,261 | Community | Groundwater |
| Darbonne Ws North | Union Parish | 3,186 | Community | Groundwater |
| Holmesville Water System | Union Parish | 2,406 | Community | Groundwater |
| Point Wilhite Ws | Union Parish | 2,292 | Community | Groundwater |
| Town of Bernice Water System | Union Parish | 1,863 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Rocky Branch Water System, PWSID LA1111013, Louisiana”, https://aquacensus.com/water-systems/louisiana/rocky-branch-water-system-la1111013 (data as of October 1, 2026).