Forensic evidence record · ev-ca4110023-f-san-bruno-lithium
Lithium
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
40 µg/LReported measurementSource observations (12)
- lithium — Sample date: 2024-10-10
Below reporting limit. < Result value not available µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2410B18-001A · Method EPA 200.7
- lithium — Sample date: 2025-01-07
Below reporting limit. < Result value not available µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2501443-001A · Method EPA 200.7
- lithium — Sample date: 2025-04-10
Below reporting limit. < Result value not available µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2504D69-001A · Method EPA 200.7
- lithium — Sample date: 2025-07-08
Below reporting limit. < Result value not available µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2507693-001A · Method EPA 200.7
- lithium — Sample date: 2024-10-10
Detected above reporting limit. = 27 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2410B18-002A · Method EPA 200.7
- lithium — Sample date: 2025-04-10
Detected above reporting limit. = 33 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2504D69-002A · Method EPA 200.7
- lithium — Sample date: 2024-10-10
Detected above reporting limit. = 33 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2410B18-003A · Method EPA 200.7
- lithium — Sample date: 2025-04-10
Detected above reporting limit. = 40 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2504D69-003A · Method EPA 200.7
- lithium — Sample date: 2024-10-10
Detected above reporting limit. = 24 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2410B18-004A · Method EPA 200.7
- lithium — Sample date: 2025-04-10
Detected above reporting limit. = 28 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2504D69-004A · Method EPA 200.7
- lithium — Sample date: 2024-10-10
Detected above reporting limit. = 25 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2410B18-005A · Method EPA 200.7
- lithium — Sample date: 2025-04-10
Detected above reporting limit. = 31 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 2504D69-005A · Method EPA 200.7
Measurement evidence
- Analyte
- Lithium
- Result qualifier
- =
- Reference basis
- 10.0 µg/L EPA health reference level (screening, not a legal limit)
- Sampling location
- Entry Point to Distribution
- Water system ID
- CA4110023
- 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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