Public water system · TX2530023
ActiveZapata County Wcid Hwy 16 East
At a glance
Zapata County Wcid Hwy 16 East (PWSID TX2530023) is an active community water system in Zapata County, Texas. It reports serving 243 people through 81 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, 4 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
243
Service connections
81
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Zapata County Wcid Hwy 16 East compare with other water systems in Zapata County?
By EPA's size categories, Zapata County Wcid Hwy 16 East is a very small system (500 people or fewer). Zapata County has 4 active public water systems, and Zapata County Wcid Hwy 16 East is the 4th-largest of them by population served. Its population served is well below the county average of 4,282 people per system, and accounts for 1.4% of the 17,126 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 Zapata County Wcid Hwy 16 East 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. 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 Zapata County Wcid Hwy 16 East?
EPA lists Zapata County Wcid Hwy 16 East 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. 4 of the 4 active systems in Zapata County (100%) are also owned by a local government.
Does Zapata County Wcid Hwy 16 East have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 2025. The violations listed here began between October 2008 and July 2025. By type: 4 monitoring and reporting, 3 contaminant level above the legal limit, 2 reporting, 2 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule Revisions (3 of them). EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2025-05-15 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 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 |
| 2019-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2009-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2009-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Zapata County Wcid Hwy 16 East: frequently asked questions
Who runs Zapata County Wcid Hwy 16 East?
Zapata County Wcid Hwy 16 East (PWSID TX2530023) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Zapata County Wcid Hwy 16 East serve?
Zapata County Wcid Hwy 16 East reports serving 243 people through 81 service connections in Zapata County, Texas.
Where does Zapata County Wcid Hwy 16 East 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 Zapata County Wcid Hwy 16 East have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in July 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 Zapata County Wcid Hwy 16 East'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, 4 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Zapata County Wcid Hwy 16 East's water quality report?
As a community water system, Zapata County Wcid Hwy 16 East 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 Zapata County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Zapata County Waterworks Swtp | Zapata | 13,736 | Community | Surface water |
| Siesta Shores Wcid | Zapata | 1,893 | Community | Surface water |
| Zapata County San Ygnacio and Ramireno | Zapata | 1,254 | Community | 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, “Zapata County Wcid Hwy 16 East, PWSID TX2530023, Texas”, https://aquacensus.com/water-systems/texas/zapata-county-wcid-hwy-16-east-tx2530023 (data as of October 1, 2026).