Forensic evidence record · ev-ok2001412-f-moore-pfos

Perfluorooctanesulfonic acid (PFOS)

A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.

Published evidence record

Non-Detect (ND)Reported measurement
Back to water-system profile
Non-Detect (ND)reported result
4 ng/Lreporting limit
Sample date: 2023-08-31 to 2024-06-10sample date
2026-10-15publication date
Source observations (47)
  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-01B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-15B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-03B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-17B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-05B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-19B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-01B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-21B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-03B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-23B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-05B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-07B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-19B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-09B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-21B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-11B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-23B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-13B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-07B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-15B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-09B · Method EPA 533

  • PFOS — Sample date: 2023-08-31

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI01009-17B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-11B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-01B · Method EPA 533

  • PFOS — Sample date: 2024-03-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC05085-13B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-03B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-15B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-05C · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-17B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-07B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-09B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-11B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-09B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-13B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-11B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-15B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-13B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-17B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-03B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-19B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-05B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-21B · Method EPA 533

  • PFOS — Sample date: 2023-12-04

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FL05095-01B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-07B · Method EPA 533

  • PFOS — Sample date: 2024-06-10

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GF11120-01B · Method EPA 533

  • PFOS — Sample date: 2023-09-18

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample FI19136-23B · Method EPA 533

  • PFOS — Sample date: 2024-03-13

    Below reporting limit. < Result value not available µg/L

    Reporting limit: 0.004 µg/L. Detection limit: Not available. Benchmark unavailable

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample GC14070-01B · Method EPA 533

Measurement evidence

Analyte
Perfluorooctanesulfonic acid (PFOS)
Result qualifier
ND
Reference basis
4.0 ng/L federal MCL (2024)
Sampling location
Entry Point to Distribution
Water system ID
OK2001412
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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