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Counties → Texas

Zapata County, Texas

Water Systems
4
Population Served
17,075
Total Violations
781
352 health-based
PFAS Detected
1
of 1 tested

Violation Analysis

100.0%
Systems with Violations
195.3
Avg Violations per System
45.1%
Health-Based Violations

Water Source Types

SW
4 systems (100%)

PFAS Contamination

1
Systems Tested
1
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Zapata Texas water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (4)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Zapata County Waterworks Swtp 13,736 95 Detected
Siesta Shores Wcid 1,842 258 -
Zapata County San Ygnacio and Ramireno 1,254 257 -
Zapata County Wcid Hwy 16 East 243 171 -

Other Counties in Texas

Harris County
1,292 systems · 6,016,117 served · 78,495 violations
Dallas County
37 systems · 3,180,170 served · 2,618 violations
Bexar County
82 systems · 2,376,579 served · 13,955 violations
Tarrant County
113 systems · 2,099,244 served · 10,564 violations
Travis County
138 systems · 1,547,700 served · 7,557 violations
Collin County
35 systems · 1,246,210 served · 1,149 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Zapata County? ▼
Zapata County has 781 total drinking water violations across 4 water systems, of which 352 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Zapata County systems? ▼
Water systems in Zapata County serve approximately 17,075 people through 4 public water systems.
Has PFAS been detected in Zapata County water? ▼
Of 1 water systems tested for PFAS in Zapata County, 1 had PFAS detected (100.0% detection rate).
What types of water sources supply Zapata County? ▼
Water systems in Zapata County use SW (4 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 45.1% of Zapata County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.