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Forensic evidence record · ev-ca3910004-f-lodi-pfbs

Perfluorobutanesulfonic acid (PFBS)

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

Published evidence record

17 ng/LReported measurement
Back to water-system profile
17 ng/Lreported result
Not verified from sourcereporting limit
Sample date: 2023-11-13 to 2025-07-28sample date
2026-10-15publication date
Source observations (50)
  • PFBS — Sample date: 2023-11-14

    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 AGK2133-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-21

    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 AHE3220-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-14

    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 AGK2134-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-21

    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 AHE3218-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-14

    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 AGK2136-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-14

    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 AHE2046-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-15

    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 AGK2261-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-16

    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 AHE2577-01 · Method EPA 533

  • PFBS — Sample date: 2024-07-11

    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 AHG1967-01 · Method EPA 533

  • PFBS — Sample date: 2025-01-21

    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 AIA3219-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-15

    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 AGK2251-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-15

    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 AGK2258-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-21

    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 AHE3222-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-14

    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 AHE2030-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-15

    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 AGK2257-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-21

    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 AHE3217-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-13

    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 AGK1704-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-16

    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 AHE2576-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-13

    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 AGK1706-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-15

    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 AHE2507-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-28

    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 AGK3521-01 · Method EPA 533

  • PFBS — Sample date: 2024-08-26

    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 AHH3679-01 · Method EPA 533

  • PFBS — Sample date: 2024-02-15

    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 AHB2449-01 · Method EPA 533

  • PFBS — Sample date: 2024-08-26

    Detected above reporting limit. = 0.0036 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample AHH3677-01 · Method EPA 533

  • PFBS — Sample date: 2025-01-21

    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 AIA3216-01 · Method EPA 533

  • PFBS — Sample date: 2025-07-28

    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 AIG3785-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-14

    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 AGK1864-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-22

    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 AHE3435-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-28

    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 AGK3520-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-23

    Detected above reporting limit. = 0.0033 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample AHE3510-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-15

    Detected above reporting limit. = 0.017 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample AGK2253-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-23

    Detected above reporting limit. = 0.012 µg/L

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

    Source: src-ucmr5-2024 · UCMR5_All.txt · Sample AHE3503-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-13

    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 AGK1710-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-22

    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 AHE3434-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-28

    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 AGK3519-01 · Method EPA 533

  • PFBS — 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 AHE3508-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-13

    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 AGK1708-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-15

    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 AHE2499-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-15

    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 AGK2213-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-22

    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 AHE3433-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-14

    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 AGK2138-01 · Method EPA 533

  • PFBS — 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 AHE3505-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-14

    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 AGK2135-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-22

    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 AHE3431-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-14

    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 AGK2137-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-28

    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 AHE3794-01 · Method EPA 533

  • PFBS — Sample date: 2023-11-13

    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 AGK1866-01 · Method EPA 533

  • PFBS — Sample date: 2024-02-01

    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 AHB0173-01 · Method EPA 533

  • PFBS — Sample date: 2024-05-28

    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 AHE3796-01 · Method EPA 533

  • PFBS — Sample date: 2025-01-21

    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 AIA3221-01 · Method EPA 533

Measurement evidence

Analyte
Perfluorobutanesulfonic acid (PFBS)
Result qualifier
=
Reference basis
2000.0 ng/L EPA health advisory (screening, not a legal limit)
Sampling location
Entry Point to Distribution
Water system ID
CA3910004
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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