Public water system · TX0280003
ActiveMaxwell Sud
At a glance
Maxwell Sud (PWSID TX0280003) is an active community water system in Caldwell County, Texas. It reports serving 16,104 people through 5,368 service connections. Its primary water source is purchased surface water, 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 April 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
16,104
Service connections
5,368
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Maxwell Sud compare with other water systems in Caldwell County?
By EPA's size categories, Maxwell Sud is a large system (10,001 to 100,000 people). Caldwell County has 8 active public water systems, and Maxwell Sud is the 2nd-largest of them by population served. Its population served is about 174% above the county average of 5,876 people per system, and accounts for 34% of the 47,011 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active community water system reports serving 6,703 people, so Maxwell Sud is about 140% above 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. Texas has 4,594 active community water systems, 65% of the state's 7,078 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 1,192 Texas systems (17%) list purchased surface water as their primary source.
Who owns and regulates Maxwell Sud?
EPA lists Maxwell Sud as owned by a local government. The TX state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 8 active systems in Caldwell County (100%) are also owned by a local government.
Does Maxwell Sud have drinking water violations?
Of the 12 most recent violations in EPA's records, 10 are health-based, and the most recent began in April 2026. The violations listed here began between January 2023 and April 2026. By type: 10 contaminant level above the legal limit and 2 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (10 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 |
|---|---|---|---|---|
| 2026-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-01-01 | 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.
Maxwell Sud: frequently asked questions
Who runs Maxwell Sud?
Maxwell Sud (PWSID TX0280003) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Maxwell Sud serve?
Maxwell Sud reports serving 16,104 people through 5,368 service connections in Caldwell County, Texas.
Where does Maxwell Sud get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Maxwell Sud 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 April 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 Maxwell Sud'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 April 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Maxwell Sud's water quality report?
As a community water system, Maxwell Sud 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 Caldwell County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Lockhart | Caldwell | 18,800 | Community | Purchased surface water |
| City of Luling | Caldwell | 7,364 | Community | Purchased surface water |
| Martindale WSC | Caldwell | 3,045 | Community | Purchased surface water |
| Tri Community WSC | Caldwell | 1,698 | Community | Groundwater under influence of surface water |
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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, “Maxwell Sud, PWSID TX0280003, Texas”, https://aquacensus.com/water-systems/texas/maxwell-sud-tx0280003 (data as of October 1, 2026).