Forensic evidence record · ev-ca3310006-f-banning-pfba

Perfluorobutanoic acid (PFBA)

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

Published evidence record

8 ng/LReported measurement

Back to water-system profile

8 ng/Lreported result

Not verified from sourcereporting limit

Sample date: 2023-09-13 to 2024-03-27sample date

2026-10-15publication date

Source observations (24)

PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-01 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-01 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-03 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-03 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-05 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-05 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-07 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-07 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-09 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-09 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-15 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-11 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-17 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-13 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-19 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-15 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-21 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-17 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-23 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-19RE1 · Method EPA 533
PFBA — Sample date: 2023-09-13
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-11 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-21 · Method EPA 533
PFBA — Sample date: 2023-09-13
Detected above reporting limit. = 0.008 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3I1717-13 · Method EPA 533
PFBA — Sample date: 2024-03-27
Below reporting limit. < Result value not available µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4C3339-23 · Method EPA 533

Measurement evidence

Analyte: Perfluorobutanoic acid (PFBA)
Result qualifier: =
Reference basis: No federal or state limit; shown for transparency
Sampling location: Entry Point to Distribution
Water system ID: CA3310006
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.

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