Forensic evidence record · ev-az0407091-f-el-mirage-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
6 ng/LReported measurementSource observations (18)
- PFHxA — Sample date: 2023-09-14
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 ALTO WELL EPDS001 (0 · Method EPA 533
- PFHxA — Sample date: 2024-03-06
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 24C0858-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-14
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 SUNNYVALE WELL EPDS0 · Method EPA 533
- PFHxA — Sample date: 2024-03-06
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 24C0855-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-13
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 ROCKWOOD WELL (EPDS0 · Method EPA 533
- PFHxA — Sample date: 2024-03-11
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 24C1356-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-12
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 COTTONWOOD WELL EPDS · Method EPA 533
- PFHxA — Sample date: 2024-05-20
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 24E2905-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-14
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 127TH LANE WELL EPDS · Method EPA 533
- PFHxA — Sample date: 2024-03-06
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 24C0850-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-13
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 DIETZ CRANE WELL (EP · Method EPA 533
- PFHxA — Sample date: 2024-05-23
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 24E3437-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-12
Detected above reporting limit. = 0.006 µg/L
Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample CANTERBURY WELL EPDS · Method EPA 533
- PFHxA — Sample date: 2024-03-06
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 24C0853-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-13
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 THOMPSON RANCH WELL · Method EPA 533
- PFHxA — Sample date: 2024-03-14
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 24C1956-02 · Method EPA 533
- PFHxA — Sample date: 2023-09-12
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 BRISAS WELL EPDS010 · Method EPA 533
- PFHxA — Sample date: 2024-03-11
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 24C1351-02 · 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
- AZ0407091
- 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.
Review finding states →