No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting July 2022.
Serves about 8,952 people (2,393 connections) with surface water from its own intake.
From EPA's record for TX0310026. PurityMap is independent of Olmito WSC.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jul–Sep 2022 | 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 February 2024 to January 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 77 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 | 2024-02-05 to 2024-11-06 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorooctanesulfonic acid (PFOS) | 4.5 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorohexanesulfonic acid (PFHxS) | 3.6 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorohexanoic acid (PFHxA) | 4.9 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorobutanoic acid (PFBA) | 10.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoropentanoic acid (PFPeA) | 5.3 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 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 | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 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 | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 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 | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 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 | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 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 | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-11-06 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-11-06 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| 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 | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-11-06 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2024-11-06 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-05 to 2025-01-15 | UCMR5 Analytical Results: OLMITO WSC (TX0310026) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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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.
Get PurityMap updates about this water system.
Follow this water →Olmito WSC's phone number on EPA record is 956-350-4099. Its mailing address is PO BOX 36, OLMITO, TX 78575-0036.
According to EPA's record, Olmito WSC uses surface water from its own intake.
EPA's record shows 1 health-based violation for Olmito WSC in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting July 2022. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Olmito WSC's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Olmito WSC. Its phone number on EPA record is 956-350-4099. Its mailing address on EPA record is PO BOX 36, OLMITO, TX 78575-0036. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.