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Forensic evidence record · ev-pa3390073-f-lca-wlsa-central-pfoa

Perfluorooctanoic acid (PFOA)

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

Published evidence record

4.4 ng/LReported measurement
Back to water-system profile
4.4 ng/Lreported result
Not verified from sourcereporting limit
Sample date: 2023-03-08 to 2024-01-31sample date
2026-01-15publication date
Source observations (30)
  • PFOA — Sample date: 2023-07-03

    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 3F06377-01 · Method EPA 533

  • PFOA — Sample date: 2023-09-07

    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 3H06460-01 · Method EPA 533

  • PFOA — Sample date: 2023-03-15

    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 3B04390-01 · Method EPA 533

  • PFOA — Sample date: 2023-10-24

    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 3J04382-01 · Method EPA 533

  • PFOA — Sample date: 2023-03-15

    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 3B04390-03 · Method EPA 533

  • PFOA — Sample date: 2023-11-29

    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 3K03810-01 · Method EPA 533

  • PFOA — Sample date: 2023-07-03

    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 3F06377-03 · Method EPA 533

  • PFOA — Sample date: 2023-09-07

    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 3H06460-03 · Method EPA 533

  • PFOA — Sample date: 2023-03-16

    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 3B04391-05 · Method EPA 533

  • PFOA — Sample date: 2023-10-25

    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 3J04443-05 · Method EPA 533

  • PFOA — Sample date: 2023-03-08

    Detected above reporting limit. = 0.0044 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 3B04389-05 · Method EPA 533

  • PFOA — Sample date: 2023-09-07

    Detected above reporting limit. = 0.0043 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 3H06460-05 · Method EPA 533

  • PFOA — Sample date: 2023-04-04

    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 3D02842-01 · Method EPA 533

  • PFOA — Sample date: 2023-11-29

    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 3K03809-01 · Method EPA 533

  • PFOA — Sample date: 2023-07-03

    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 3F06379-01 · Method EPA 533

  • PFOA — Sample date: 2023-10-25

    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 3J04443-01 · Method EPA 533

  • PFOA — Sample date: 2023-03-16

    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 3B04391-03 · Method EPA 533

  • PFOA — Sample date: 2023-10-25

    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 3J04443-03 · Method EPA 533

  • PFOA — Sample date: 2023-04-04

    Detected above reporting limit. = 0.0044 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 3D02842-03 · Method EPA 533

  • PFOA — Sample date: 2023-09-07

    Detected above reporting limit. = 0.0042 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 3H06460-09 · Method EPA 533

  • PFOA — Sample date: 2023-03-16

    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 3B04391-07 · Method EPA 533

  • PFOA — Sample date: 2023-10-05

    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 3I03897-01 · Method EPA 533

  • PFOA — Sample date: 2023-07-03

    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 3F06378-01 · Method EPA 533

  • PFOA — Sample date: 2023-10-24

    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 3J04382-05 · Method EPA 533

  • PFOA — Sample date: 2023-03-15

    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 3B04390-07 · Method EPA 533

  • PFOA — Sample date: 2023-10-24

    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 3J04382-07 · Method EPA 533

  • PFOA — Sample date: 2024-01-31

    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 4A05686-01 · Method EPA 533

  • PFOA — Sample date: 2023-06-07

    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 3E05362-01 · Method EPA 533

  • PFOA — Sample date: 2023-09-07

    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 3H06459-01 · Method EPA 533

  • PFOA — Sample date: 2023-11-29

    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 3K04429-01 · Method EPA 533

Measurement evidence

Analyte
Perfluorooctanoic acid (PFOA)
Result qualifier
=
Reference basis
4.0 ng/L federal MCL (2024)
Sampling location
Entry Point to Distribution
Water system ID
PA3390073
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