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Forensic evidence record · ev-md0080049-f-waldorf-charles-county-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

5.1 ng/LReported measurement
Back to water-system profile
5.1 ng/Lreported result
Not verified from sourcereporting limit
Sample date: 2024-07-15 to 2026-05-19sample date
2026-01-15publication date
Source observations (37)
  • PFHxA — Sample date: 2024-07-15

    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 2407A68-001B · Method EPA 533

  • PFHxA — Sample date: 2025-01-08

    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 2501721-001B · 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 2407F48-001B · Method EPA 533

  • PFHxA — Sample date: 2025-01-13

    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 2501718-002B · Method EPA 533

  • PFHxA — Sample date: 2024-08-28

    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 2408P16-003A · Method EPA 533

  • PFHxA — Sample date: 2025-01-08

    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 2501721-004B · 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 2407F48-002B · Method EPA 533

  • PFHxA — Sample date: 2025-01-13

    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 2501718-005B · 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 2407F48-003B · Method EPA 533

  • PFHxA — Sample date: 2025-01-13

    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 2501718-004B · Method EPA 533

  • PFHxA — Sample date: 2024-07-15

    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 2407A68-003B · Method EPA 533

  • PFHxA — Sample date: 2025-01-22

    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 2501D25-001B · 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 2407F48-004B · Method EPA 533

  • PFHxA — Sample date: 2025-01-13

    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 2501718-006B · Method EPA 533

  • PFHxA — Sample date: 2024-07-29

    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 2407K89-001B · Method EPA 533

  • PFHxA — Sample date: 2025-01-22

    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 2501D25-002B · Method EPA 533

  • PFHxA — Sample date: 2024-07-29

    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 2407K89-002B · Method EPA 533

  • PFHxA — Sample date: 2025-01-22

    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 2501D25-004B · Method EPA 533

  • PFHxA — Sample date: 2024-07-29

    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 2407K89-003B · Method EPA 533

  • PFHxA — Sample date: 2025-02-24

    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 2502H25-001A · Method EPA 533

  • PFHxA — Sample date: 2025-12-09

    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 2512842-001B · Method EPA 533

  • PFHxA — Sample date: 2026-05-19

    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 2605D06-001B · Method EPA 533

  • PFHxA — Sample date: 2024-08-28

    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 2408P16-001A · Method EPA 533

  • PFHxA — Sample date: 2025-01-13

    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 2501718-001B · Method EPA 533

  • PFHxA — Sample date: 2024-07-29

    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 2407K89-004B · Method EPA 533

  • PFHxA — Sample date: 2024-07-15

    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 2407A68-006B · Method EPA 533

  • PFHxA — Sample date: 2025-01-08

    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 2501721-005B · Method EPA 533

  • PFHxA — Sample date: 2024-09-24

    Detected above reporting limit. = 0.0051 µg/L

    Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2409H94-001B · Method EPA 533

  • PFHxA — Sample date: 2024-10-29

    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 2410M26-001A · Method EPA 533

  • PFHxA — Sample date: 2025-01-08

    Detected at or below reporting limit. = 0.003 µg/L

    Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2501721-002B · Method EPA 533

  • PFHxA — Sample date: 2025-04-07

    Detected at or below reporting limit. = 0.003 µg/L

    Reporting limit: 0.003 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2504681-001B · Method EPA 533

  • PFHxA — Sample date: 2024-07-15

    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 2407A68-004B · Method EPA 533

  • PFHxA — Sample date: 2025-01-08

    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 2501721-003B · Method EPA 533

  • PFHxA — Sample date: 2024-08-28

    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 2408P16-002A · Method EPA 533

  • PFHxA — Sample date: 2025-01-13

    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 2501718-003B · Method EPA 533

  • PFHxA — Sample date: 2024-07-29

    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 2407K89-005B · Method EPA 533

  • PFHxA — Sample date: 2025-01-22

    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 2501D25-003B · 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
MD0080049
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.

Open source profile →Original record

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 →

Related intelligence

Water-system profileData sourcesMethodologyEvidence verification