Forensic evidence record · ev-tx0430037-f-bear-creek-sud-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
10.3 ng/LReported measurementSource observations (8)
- PFBA — Sample date: 2024-01-17
Detected above reporting limit. = 0.009 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 112315P · Method EPA 533
- PFBA — Sample date: 2024-04-17
Detected above reporting limit. = 0.0103 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 115960P · Method EPA 533
- PFBA — Sample date: 2024-07-16
Detected above reporting limit. = 0.0066 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 118554P · Method EPA 533
- PFBA — Sample date: 2024-10-09
Detected above reporting limit. = 0.0072 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 122147P · Method EPA 533
- PFBA — Sample date: 2024-01-17
Detected above reporting limit. = 0.0099 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 112316P · Method EPA 533
- PFBA — Sample date: 2024-04-17
Detected above reporting limit. = 0.0087 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 115961P · Method EPA 533
- PFBA — Sample date: 2024-07-16
Detected above reporting limit. = 0.0094 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 118555P · Method EPA 533
- PFBA — Sample date: 2024-10-09
Detected above reporting limit. = 0.0073 µg/L
Reporting limit: 0.005 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 122148P · 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
- TX0430037
- 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.
Review finding states →