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MyTapWater.us

PWSID TX2140006

CITY OF LA GRULLA

Community water system based in La Grulla, TX

Service area on file with EPA: Starr County. EPA's recorded service area can be incomplete for regional authorities. The cities and counties above are what the utility has filed with EPA; the utility may serve additional areas.

Population served
9,500
Source
Surface water
Status
Active

At a glance

16 issues above the federal safety limit

Past 5 years: 27 health-based violations on file, all marked Resolved or Archived. See compliance history below.

Risk classification follows EPA's published values for safe drinking water, with caution and concern bands reviewed by a clinician. Past resolved violations do not influence this card. See methodology.

Lead service line inventory

No inventory data on file

We do not yet have this utility's published Lead Service Line Inventory on file. The EPA Lead and Copper Rule Improvements (LCRI) required every community water system to publish one by October 16, 2024 and to identify and replace any lead lines within 10 years. How lead enters drinking water.

Phase 1 coverage focuses on the largest NC utilities. Smaller systems will be added; in the meantime, ask your utility for their inventory or check their Consumer Confidence Report.

Lead and copper test results

The most recent measurement per contaminant from EPA's Lead and Copper Rule sampling.

Why only lead and copper, and not arsenic, nitrate, or others?

EPA's bulk SDWIS download is the only nationwide per-system sample data they publish, and it only includes the Lead and Copper Rule table. Values for other regulated contaminants (TTHMs, nitrate, arsenic, etc.) appear on this page only when they trigger a violation. For the full per-system contaminant suite, see the utility's annual Consumer Confidence Report (link further down the page).

Most recent measurements per contaminant (Lead and Copper Rule) . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant Most recent Date Risk
PB90
0 mg/L December 31, 2025 Below regulatory thresholds

Data from EPA SDWIS (Lead and Copper Rule sample table) , last refreshed May 24, 2026.

PFAS and emerging contaminants

This system was tested 10 times under EPA's latest PFAS monitoring program; 1 of the 30 chemicals tested was detected.

What is this testing program?

EPA's fifth Unregulated Contaminant Monitoring Rule cycle (UCMR 5, 2023 to 2025) required every public water system serving over 3,300 people to test for 29 per- and polyfluoroalkyl substances (PFAS) plus lithium; 30 chemicals in total. Most recent detection per chemical shown below.

Most recent UCMR 5 detection per contaminant . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant Most recent detection Date Risk
0.04 mg/LJuly 9, 2025 Concern
Tested but not detected (4 contaminants)

EPA tested for these substances and every sample was below the minimum reporting level. Absence of detection does not mean true zero; it means below the laboratory's quantitation threshold.

Data from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule) , last refreshed May 24, 2026.

Fluoride

Per CDC My Water's Fluoride

CITY OF LA GRULLA does not add fluoride to its drinking water.

This system has not reported adding fluoride to its water on CDC's My Water's Fluoride listing. Natural fluoride may still be present at trace levels from the source water; the utility's annual water quality report has the latest measured concentration.

Source: CDC My Water's Fluoride, listed under LA GRULLA CITY OF (Starr County). Verify on CDC's site .

Area context

Starr County, TX (2020 data)

Community water systems
3 of 11 add fluoride
Population on fluoridated water
3,722 of 64,585 (5.8%)

Texas statewide (2020 data)

Population on fluoridated water
19,743,163 of 27,818,869 (71.0%)
Community water systems adding fluoride
2,573 of 6,046

Data from CDC My Water's Fluoride (per-system status) , last refreshed May 19, 2026.

Data from CDC Water Fluoridation Reporting System (state and county aggregates) , last refreshed May 16, 2026.

Recorded contaminant measurements (from violations)

When this system exceeded a regulatory limit and EPA recorded the measured value, that value is shown here. These are not routine sample results: they are the values the violation was triggered on.

Measured values from recorded violations . Most recent first.
Period Contaminant Measured Federal MCL Status
October 1, 2025Tthm0.091MG/L0.08 MG/L Health-based

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Compliance history

EPA-recorded violations against this system over the last 5 years.

How to read this section

Health-based violations are when a measured limit was exceeded; the measured concentration is shown alongside the EPA federal limit where SDWIS published it. Monitoring and reporting items are paperwork issues (missed sample dates, late filings) that do not themselves indicate unsafe water.

15 active health-based violations

EPA records 15 health-based violations that have not yet been resolved. An additional 27 health-based violations in the last 5 years are already resolved.

Health-based violations in the last 5 years
Period start Contaminant What happened Measured level Status
October 1, 2025 Tthm Maximum Contaminant Level Violation, Average
0.091 MG/L
MCL 0.080 MG/L
Resolved
August 16, 2025 Revised Total Coliform Rule Treatment Technique, Level 2 Assessment (RTCR) Not reported Unaddressed
August 16, 2025 Revised Total Coliform Rule Treatment Technique, Level 2 Assessment (RTCR) Not reported Unaddressed
August 16, 2025 Revised Total Coliform Rule Treatment Technique, Level 2 Assessment (RTCR) Not reported Unaddressed
May 30, 2025 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
May 30, 2025 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
May 30, 2025 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
March 1, 2025 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
March 1, 2025 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
March 1, 2025 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
December 21, 2024 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
December 21, 2024 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
December 21, 2024 Revised Total Coliform Rule Treatment Technique, Corrective/Expedited Actions (RTCR) Not reported Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Not reported Unaddressed
March 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
March 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
March 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
March 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
January 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
January 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
January 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
January 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
January 1, 2024 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
December 1, 2023 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
December 1, 2023 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
December 1, 2023 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
December 1, 2023 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
December 1, 2023 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2022 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2022 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2022 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
February 1, 2022 Interim Enhanced Surface Water Treatment Rule Monthly Turbidity Exceed (Enhanced SWTR) Not reported Resolved
June 19, 2021 Revised Total Coliform Rule Treatment Technique, Level 1 Assessment (RTCR) Not reported Resolved
June 19, 2021 Revised Total Coliform Rule Treatment Technique, Level 1 Assessment (RTCR) Not reported Resolved
June 19, 2021 Revised Total Coliform Rule Treatment Technique, Level 1 Assessment (RTCR) Not reported Resolved
June 19, 2021 Revised Total Coliform Rule Treatment Technique, Level 1 Assessment (RTCR) Not reported Resolved
88 monitoring and reporting item s (paperwork) , 31 still open · these are not health risks
Monitoring and reporting items in the last 5 years
Period start Relates to Item Status
October 20, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
September 23, 2025 Tthm Failure Submit IDSE/Subpart V Plan Rpt Unaddressed
September 23, 2025 Tthm Failure Submit IDSE/Subpart V Plan Rpt Unaddressed
September 23, 2025 Tthm Failure Submit IDSE/Subpart V Plan Rpt Unaddressed
August 24, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
August 24, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
July 1, 2025 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Unaddressed
July 1, 2025 Total Haloacetic Acids (Haa5) Monitoring and Reporting (DBP) Resolved
July 1, 2025 Tthm Monitoring and Reporting (DBP) Resolved
July 1, 2025 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Unaddressed
July 1, 2025 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Unaddressed
July 1, 2025 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Unaddressed
May 1, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
May 1, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
April 18, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
April 18, 2025 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
January 1, 2025 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Unaddressed
January 1, 2025 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Unaddressed
January 1, 2025 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Unaddressed
October 18, 2024 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
October 18, 2024 Public Notice Public Notification Violation for NPDWR Violation Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Unaddressed
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Unaddressed
September 29, 2024 Lead and Copper Rule Lead Consumer Notice Unaddressed
September 29, 2024 Lead and Copper Rule Lead Consumer Notice Unaddressed
September 29, 2024 Lead and Copper Rule Lead Consumer Notice Unaddressed
July 2, 2024 Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Unaddressed
July 1, 2024 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2024 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2024 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2024 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Unaddressed
July 1, 2024 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Unaddressed
May 1, 2024 Public Notice Public Notification Violation for NPDWR Violation Resolved
May 1, 2024 Public Notice Public Notification Violation for NPDWR Violation Resolved
March 31, 2024 Lead and Copper Rule Lead Consumer Notice Unaddressed
March 31, 2024 Lead and Copper Rule Lead Consumer Notice Unaddressed
March 31, 2024 Lead and Copper Rule Lead Consumer Notice Unaddressed
March 31, 2024 Public Notice Public Notification Violation for NPDWR Violation Resolved
March 31, 2024 Public Notice Public Notification Violation for NPDWR Violation Resolved
August 1, 2023 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
August 1, 2023 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
August 1, 2023 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
July 16, 2023 Public Notice Public Notification Violation for NPDWR Violation Resolved
July 16, 2023 Public Notice Public Notification Violation for NPDWR Violation Resolved
July 1, 2023 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2023 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2023 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2023 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
February 1, 2023 Public Notice Public Notification Violation for NPDWR Violation Resolved
February 1, 2023 Public Notice Public Notification Violation for NPDWR Violation Resolved
October 1, 2022 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
October 1, 2022 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
October 1, 2022 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
October 1, 2022 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2022 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Resolved
July 1, 2022 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Resolved
July 1, 2022 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Resolved
May 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
May 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
May 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
May 1, 2022 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
March 31, 2022 Public Notice Public Notification Violation for NPDWR Violation Resolved
March 31, 2022 Public Notice Public Notification Violation for NPDWR Violation Resolved
January 1, 2022 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
January 1, 2022 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
January 1, 2022 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
January 1, 2022 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
September 1, 2021 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
September 1, 2021 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
September 1, 2021 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
September 1, 2021 Revised Total Coliform Rule Monitoring, Routine (RTCR) Resolved
September 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
September 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
September 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
September 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
August 19, 2021 Public Notice Public Notification Violation for NPDWR Violation Resolved
August 19, 2021 Public Notice Public Notification Violation for NPDWR Violation Resolved
July 1, 2021 Carbon, Total Monitoring and Reporting (DBP) Resolved
July 1, 2021 Carbon, Total Monitoring and Reporting (DBP) Resolved
July 1, 2021 Carbon, Total Monitoring and Reporting (DBP) Resolved
July 1, 2021 Carbon, Total Monitoring and Reporting (DBP) Resolved
July 1, 2021 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Resolved
July 1, 2021 Consumer Confidence Rule Consumer Confidence Report Complete Failure to Report Resolved
June 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
June 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
June 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
June 1, 2021 Interim Enhanced Surface Water Treatment Rule Monitoring, Turbidity (Enhanced SWTR) Resolved
5 older violation s (5-10 years ago) · all paperwork (monitoring/reporting), none health-based , all resolved
Violations 5-10 years ago (5 total)
Period start Relates to Item Measured level Status
July 1, 2020 Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Resolved
July 1, 2020 Consumer Confidence Rule Consumer Confidence Report Inadequate Reporting Resolved
December 30, 2019 Lead and Copper Rule Lead Consumer Notice Resolved
December 30, 2019 Lead and Copper Rule Lead Consumer Notice Resolved
December 30, 2019 Lead and Copper Rule Lead Consumer Notice Resolved

Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.

Where to see every contaminant this utility tested for

EPA's bulk SDWIS dataset gives MyTapWater.us per-system measured values for lead and copper, plus violation records for everything else. To see every regulated contaminant this utility tested for in the past year (TTHMs, HAA5, nitrate, arsenic, fluoride, chromium, etc.) with measured values, read the utility's Consumer Confidence Report (CCR).

Every community water system is required by EPA to publish a CCR annually, by July 1, listing every contaminant they sampled, the measured value, the federal limit, and any health-based exceedances. Most utilities post the report online; some mail it with your bill.

How to find CITY OF LA GRULLA's CCR:

Compare nearby utilities by population served.

Contact this utility

Public administrative contact information for this water system, as filed with the EPA. Use this to ask about your service line, request your home's lead status, or report a water quality issue.

Administrator
VILLARREAL, MARCARIO
Phone
956-487-3341
Mailing address
PO BOX 197
LA GRULLA, TX 78548-0197

Where this page's data comes from

Bundle released 2026-Q2, regenerated May 24, 2026. Each section above also shows its own source date so you can tell at a glance how fresh that part of the page is.

Every value on this page is cross-verified before publication; read our methodology for the verification steps and corrections process.