Public water system · LA1127002
ActiveVillage of Calvin Water System
At a glance
Village of Calvin Water System (PWSID LA1127002) is an active community water system in Winn Parish County, Louisiana. It reports serving 591 people through 220 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, 6 are health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
591
Service connections
220
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Village of Calvin Water System compare with other water systems in Winn Parish County?
By EPA's size categories, Village of Calvin Water System is a small system (501 to 3,300 people). Winn Parish County has 13 active public water systems. Its population served is about 55% below the county average of 1,323 people per system, and accounts for 3.4% of the 17,203 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 Village of Calvin 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 Village of Calvin Water System?
EPA lists Village of Calvin 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. 4 of the 13 active systems in Winn Parish County (31%) are also owned by a local government.
Does Village of Calvin Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in October 2025. The violations listed here began between May 2023 and October 2025. By type: 4 contaminant level above the legal limit, 3 monitoring and reporting, 2 public notice, recordkeeping or other, 2 required treatment not met and 1 reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (5 of them). EPA lists 6 as resolved, 4 as archived and 2 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2025-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-09-10 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2023-12-17 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2023-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2023-06-07 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-05-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2023-05-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | 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.
Village of Calvin Water System: frequently asked questions
Who runs Village of Calvin Water System?
Village of Calvin Water System (PWSID LA1127002) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does Village of Calvin Water System serve?
Village of Calvin Water System reports serving 591 people through 220 service connections in Winn Parish County, Louisiana.
Where does Village of Calvin 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 Village of Calvin Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in October 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 Village of Calvin 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, 6 are health-based, and the most recent began in October 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 Village of Calvin Water System's water quality report?
As a community water system, Village of Calvin 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 Winn Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Winnfield Water System | Winn Parish | 7,194 | Community | Groundwater |
| West Winn Water System Inc. | Winn Parish | 1,965 | Community | Groundwater |
| Tannehill Water System | Winn Parish | 1,932 | Community | Groundwater |
| Village of Atlanta Water Supply | Winn Parish | 900 | Community | Groundwater |
| Pleasant Hills-Crossroads Water Systems | Winn Parish | 840 | Community | Groundwater |
| Backwood Village Water System | Winn Parish | 783 | Community | 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, “Village of Calvin Water System, PWSID LA1127002, Louisiana”, https://aquacensus.com/water-systems/louisiana/village-of-calvin-water-system-la1127002 (data as of October 1, 2026).