No health-based violations on EPA record since 2016.
Serves about 7,794 people (2,598 connections) with groundwater from its own wells, and buys water from San Antonio Water System.
From EPA's record for TX0150178. PurityMap is independent of City of Leon Valley.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2024 to August 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanesulfonic acid (PFBS) | 3.1 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| 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 | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| 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 | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| 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 | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| 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 | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| 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 | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-06 to 2024-08-13 | UCMR5 Analytical Results: CITY OF LEON VALLEY (TX0150178) |
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 Leon Valley's phone number on EPA record is 210-684-1391. Its mailing address is 6400 EL VERDE RD, LEON VALLEY, TX 78238-2322.
According to EPA's record, City of Leon Valley uses groundwater from its own wells, and buys water from San Antonio Water System.
No health-based violations on EPA record since 2016. EPA also lists 65 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 Leon Valley's latest lead and copper round, which ended in December 2024, was 1 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for City of Leon Valley. Its phone number on EPA record is 210-684-1391. Its mailing address on EPA record is 6400 EL VERDE RD, LEON VALLEY, TX 78238-2322. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.