CITY OF LA GRULLA
PWS ID: TX2140006 · LA GRULLA, Texas 78548-0197
CITY OF LA GRULLA serves 9,500 people in LA GRULLA, Texas using Surface Water water sources. It has 222 recorded EPA violations, including 41 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).
Water Quality Snapshot: CITY OF LA GRULLA
CITY OF LA GRULLA is a local-owned community water system that delivers drinking water to 9,500 residents in LA GRULLA, Texas (Starr County) through 4,000 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 222 total violations for this system , of which 41 (18%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 127 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is Interim Enhanced Surface Water Treatment Rule, recorded in 27 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 40 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.
Across Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. CITY OF LA GRULLA's 222 violations sit above the Texas average. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,000
- County
- Starr
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 127
- Treatment Tech Violations
- 41
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Interim Enhanced Surface Water Treatment Rule | MR | 27 | 2023 |
| Public Notice | Other | 25 | 2025 |
| Lead and Copper Rule | MR | 25 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | TT | 24 | 2024 |
| Coliform (TCR) | MR | 13 | 2010 |
| Consumer Confidence Rule | Other | 12 | 2024 |
| Revised Total Coliform Rule | TT | 12 | 2025 |
| Revised Total Coliform Rule | MON | 8 | 2022 |
| CARBON, TOTAL | MR | 4 | 2021 |
| Surface Water Treatment Rule | TT | 3 | 2004 |
| TTHM | MR | 3 | 2025 |
| E. COLI | MR | 3 | 2009 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2013 |
| Arsenic | MR | 1 | 2013 |
| Barium | MR | 1 | 2013 |
| Cadmium | MR | 1 | 2013 |
| Chromium | MR | 1 | 2013 |
| Antimony, Total | MR | 1 | 2013 |
| Beryllium, Total | MR | 1 | 2013 |
| Thallium, Total | MR | 1 | 2013 |
| Selenium | MR | 1 | 2013 |
| Xylenes, Total | MR | 1 | 2013 |
| o-Dichlorobenzene | MR | 1 | 2013 |
| p-Dichlorobenzene | MR | 1 | 2013 |
| Vinyl chloride | MR | 1 | 2013 |
| trans-1,2-Dichloroethylene | MR | 1 | 2013 |
| 1,1,1-Trichloroethane | MR | 1 | 2013 |
| Carbon tetrachloride | MR | 1 | 2013 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 10 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| lithium | 7/9/2025 | 40.0000 µg/L | 9 µg/L | Detected |
| NMeFOSAA | 7/9/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 7/9/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 7/9/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 7/9/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 5/6/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 5/6/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| NEtFOSAA | 5/6/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 5/6/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| lithium | 3/17/2025 | 35.0000 µg/L | 9 µg/L | Detected |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for CITY OF LA GRULLA.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID TX2140006 on SDWISSource: EPA SDWIS Federal Reports Search
Texas Drinking Water Authority
Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch is the primacy agency that licenses and inspects CITY OF LA GRULLA under EPA-delegated authority.
Open TX regulator portalSource: Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch
Violation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2025 | Public Notice | Other | 25 | SDWIS / TX2140006 / 7500 |
| 2025 | Lead and Copper Rule | MR | 25 | SDWIS / TX2140006 / 5000 |
| 2025 | Revised Total Coliform Rule | TT | 12 | SDWIS / TX2140006 / 8000 |
| 2025 | TTHM | MR | 3 | SDWIS / TX2140006 / 2950 |
| 2024 | Interim Enhanced Surface Water Treatment Rule | TT | 24 | SDWIS / TX2140006 / 0300 |
| 2024 | Consumer Confidence Rule | Other | 12 | SDWIS / TX2140006 / 7000 |
| 2024 | LEAD AND COPPER RULE REVISIONS | RPT | 2 | SDWIS / TX2140006 / 5200 |
| 2024 | LEAD AND COPPER RULE REVISIONS | TT | 2 | SDWIS / TX2140006 / 5200 |
| 2023 | Interim Enhanced Surface Water Treatment Rule | MR | 27 | SDWIS / TX2140006 / 0300 |
| 2022 | Revised Total Coliform Rule | MON | 8 | SDWIS / TX2140006 / 8000 |
| 2021 | CARBON, TOTAL | MR | 4 | SDWIS / TX2140006 / 2920 |
| 2013 | Total Haloacetic Acids (HAA5) | MR | 2 | SDWIS / TX2140006 / 2456 |
| 2013 | Arsenic | MR | 1 | SDWIS / TX2140006 / 1005 |
| 2013 | Barium | MR | 1 | SDWIS / TX2140006 / 1010 |
| 2013 | Cadmium | MR | 1 | SDWIS / TX2140006 / 1015 |
How CITY OF LA GRULLA Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | CITY OF LA GRULLA | Texas avg | Federal benchmark |
|---|---|---|---|
| Total violations | 222 | 101.5 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 41 | 22.2 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | 1 compound | 93.1% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 9,500 | 4,524 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for Texas
Read our methodology — how this data is sourced, computed, and verified.