Total trihalomethanes (TTHM) above the legal limit in the period starting April 2026; 2 open health-based violations on EPA record.
Serves about 14,000 people (5,166 connections) with surface water from its own intake.
From EPA's record for TX1780005. PurityMap is independent of Nueces County WCID 3.
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13 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2026 | Total trihalomethanes (TTHM) | 0.084 mg/L | 0.080 mg/L | Unaddressed |
| From April 2026 | Arsenic | 0.011 mg/L | 0.010 mg/L | Unaddressed |
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.082 mg/L | 0.080 mg/L | Archived |
| From January 2026 | Arsenic | 0.011 mg/L | 0.010 mg/L | Archived |
| From October 2025 | Arsenic | 0.011 mg/L | 0.010 mg/L | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2022 | Total trihalomethanes (TTHM) | 0.083 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.082 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 0.083 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2018 | Total trihalomethanes (TTHM) | 0.087 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2018 | Total trihalomethanes (TTHM) | 0.096 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2017 | Total trihalomethanes (TTHM) | 0.098 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2017 | Total trihalomethanes (TTHM) | 0.089 mg/L | 0.080 mg/L | Resolved |
| Jul–Sep 2017 | Total trihalomethanes (TTHM) | 0.085 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2023 to October 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 34.7 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorobutanoic acid (PFBA) | 12 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-30 to 2023-10-23 | UCMR5 Analytical Results: NUECES COUNTY WCID 3 (TX1780005) |
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
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Follow this water →Nueces County WCID 3's phone number on EPA record is 361-387-4549. Its mailing address is PO BOX 1147, ROBSTOWN, TX 78380-1147.
According to EPA's record, Nueces County WCID 3 uses surface water from its own intake.
EPA's record shows 13 health-based violations for Nueces County WCID 3 in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting April 2026. EPA's record also shows 2 open health-based violations. EPA also lists 3 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Nueces County WCID 3's latest lead and copper round, which ended in December 2025, was 2.38 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Nueces County WCID 3. Its phone number on EPA record is 361-387-4549. Its mailing address on EPA record is PO BOX 1147, ROBSTOWN, TX 78380-1147. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.