No open health-based violations on EPA record in the last 10 years.
Serves about 8,698 people (5,817 connections) with surface water from its own intake.
From EPA's record for TX2270092. PurityMap is independent of City of Lago Vista.
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3 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From August 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Resolved |
| From July 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Resolved |
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2024 to February 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 10 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-03-19 to 2024-12-16 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorobutanoic acid (PFBA) | 7.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 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 | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 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 | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 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 | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 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 | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 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 | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-16 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-16 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| 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 | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-16 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-16 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2025-02-10 | UCMR5 Analytical Results: CITY OF LAGO VISTA (TX2270092) |
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 →City of Lago Vista's phone number on EPA record is 512-267-1155. Its mailing address is PO BOX 4727, LAGO VISTA, TX 78645-0008.
According to EPA's record, City of Lago Vista uses surface water from its own intake.
EPA's record shows 3 health-based violations for City of Lago Vista in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 15 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in City of Lago Vista's latest lead and copper round, which ended in December 2025, was 1.86 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for City of Lago Vista. Its phone number on EPA record is 512-267-1155. Its mailing address on EPA record is PO BOX 4727, LAGO VISTA, TX 78645-0008. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.