Forensic evidence record · ev-tx0700034-f-sardis-lone-elm-pfhxa
Perfluorohexanoic acid (PFHxA)
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
5.6 ng/LReported measurementSource observations (28)
- PFHxA — Sample date: 2024-07-22
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198001 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374001 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887001 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387001 · Method EPA 533
- PFHxA — Sample date: 2024-07-22
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198003 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374003 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Detected above reporting limit. = 0.0034 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887002 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387003 · Method EPA 533
- PFHxA — Sample date: 2024-07-22
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198005 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374005 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887004 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387005 · Method EPA 533
- PFHxA — Sample date: 2024-07-22
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198007 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374007 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887006 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387007 · Method EPA 533
- PFHxA — Sample date: 2024-07-22
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198009 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374009 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Detected above reporting limit. = 0.0056 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887008 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Detected above reporting limit. = 0.0041 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387009 · Method EPA 533
- PFHxA — Sample date: 2024-07-22
Detected above reporting limit. = 0.0037 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198011 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374011 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887010 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Detected above reporting limit. = 0.0052 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387011 · Method EPA 533
- PFHxA — Sample date: 2024-07-22
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2431198013 · Method EPA 533
- PFHxA — Sample date: 2024-10-14
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2443374013 · Method EPA 533
- PFHxA — Sample date: 2025-01-20
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2501887012 · Method EPA 533
- PFHxA — Sample date: 2025-04-07
Detected above reporting limit. = 0.0044 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample Q2513387013 · Method EPA 533
Measurement evidence
- Analyte
- Perfluorohexanoic acid (PFHxA)
- Result qualifier
- =
- Reference basis
- 400000.0 ng/L Michigan EGLE state MCL (strictest US state)
- Sampling location
- Entry Point to Distribution
- Water system ID
- TX0700034
- Source ID
- src-ucmr5-2024
Laboratory context
No laboratory method note was published with this record.
Sampling context
This result represents a entry point to distribution sample. It does not establish the condition at every distribution point or household tap.
Record limitation
System-level entry-point monitoring; not a measurement of the water at an individual household tap.
Source provenance
UCMR5 Analytical Results
Fifth Unregulated Contaminant Monitoring Rule (UCMR5) — PFAS occurrence data
U.S. Environmental Protection Agency · Published 2024
Nationwide entry-point monitoring for 29 PFAS and lithium under the fifth UCMR cycle. Results are entry-point-to-distribution samples, not household-tap measurements.
How to interpret this record
This page preserves one measurement. Interpretation requires its qualifier, reporting limit, reference basis, date, sampling location, and limitations; the number alone is not a safety verdict.
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