Public water system · LA1031030
ActiveDesoto Parish Water Works District 1
At a glance
Desoto Parish Water Works District 1 (PWSID LA1031030) is an active community water system in De Soto Parish County, Louisiana. It reports serving 7,173 people through 2,391 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in August 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
7,173
Service connections
2,391
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Desoto Parish Water Works District 1 compare with other water systems in De Soto Parish County?
By EPA's size categories, Desoto Parish Water Works District 1 is a medium system (3,301 to 10,000 people). De Soto Parish County has 12 active public water systems, and Desoto Parish Water Works District 1 is the 3rd-largest of them by population served. Its population served is about 148% above the county average of 2,896 people per system, and accounts for 21% of the 34,752 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 Desoto Parish Water Works District 1 is roughly in line with 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 53 Louisiana systems (4.7%) list surface water as their primary source.
Who owns and regulates Desoto Parish Water Works District 1?
EPA lists Desoto Parish Water Works District 1 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 12 active systems in De Soto Parish County (33%) are also owned by a local government.
Does Desoto Parish Water Works District 1 have drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in August 2025. The violations listed here began between October 2019 and August 2025. By type: 5 required treatment not met, 3 contaminant level above the legal limit, 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Surface Water Treatment Rule (5 of them). EPA lists 11 as resolved and 1 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Archived |
| 2024-09-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2024-01-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2023-10-27 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2023-08-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2020-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2020-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2020-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | 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.
Desoto Parish Water Works District 1: frequently asked questions
Who runs Desoto Parish Water Works District 1?
Desoto Parish Water Works District 1 (PWSID LA1031030) is a community water system owned by a local government. It is regulated by the LA state drinking water program.
How many people does Desoto Parish Water Works District 1 serve?
Desoto Parish Water Works District 1 reports serving 7,173 people through 2,391 service connections in De Soto Parish County, Louisiana.
Where does Desoto Parish Water Works District 1 get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Desoto Parish Water Works District 1 have any drinking water violations?
Of the 12 most recent violations in EPA's records, 8 are health-based, and the most recent began in August 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 Desoto Parish Water Works District 1'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, 8 are health-based, and the most recent began in August 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 Desoto Parish Water Works District 1's water quality report?
As a community water system, Desoto Parish Water Works District 1 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 De Soto Parish County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| North Desoto Water System | De Soto Parish | 7,608 | Community | Groundwater |
| City of Mansfield Water System | De Soto Parish | 7,512 | Community | Surface water |
| Keatchie Water System | De Soto Parish | 4,446 | Community | Groundwater |
| Town of Logansport Water System | De Soto Parish | 2,448 | Community | Surface water |
| East Desoto Water System | De Soto Parish | 1,455 | Community | Groundwater |
| Rambin-Wallace Water System | De Soto Parish | 1,161 | 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, “Desoto Parish Water Works District 1, PWSID LA1031030, Louisiana”, https://aquacensus.com/water-systems/louisiana/desoto-parish-water-works-district-1-la1031030 (data as of October 1, 2026).