Forensic evidence record · ev-ca3310025-f-norco-lithium
Lithium
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
35.9 µg/LReported measurementSource observations (14)
- lithium — Sample date: 2023-09-12
Detected above reporting limit. = 35.9 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-62546-1 · Method EPA 200.7
- lithium — Sample date: 2023-12-05
Detected above reporting limit. = 24.8 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-73590-1 · Method EPA 200.7
- lithium — Sample date: 2024-03-20
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 380-88041-1 · Method EPA 200.7
- lithium — Sample date: 2024-06-18
Detected above reporting limit. = 35.6 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-100406-1 · Method EPA 200.7
- lithium — Sample date: 2023-09-12
Detected above reporting limit. = 10.8 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-62546-2 · Method EPA 200.7
- lithium — Sample date: 2024-03-20
Detected above reporting limit. = 11.2 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-88041-2 · Method EPA 200.7
- lithium — Sample date: 2023-09-12
Detected above reporting limit. = 10.3 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-62546-3 · Method EPA 200.7
- lithium — Sample date: 2024-03-20
Detected above reporting limit. = 11.3 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-88041-3 · Method EPA 200.7
- lithium — Sample date: 2023-09-12
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 380-62546-4 · Method EPA 200.7
- lithium — Sample date: 2024-03-20
Detected above reporting limit. = 10.8 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-88041-4 · Method EPA 200.7
- lithium — Sample date: 2023-09-12
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 380-62546-5 · Method EPA 200.7
- lithium — Sample date: 2024-03-20
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 380-88041-5 · Method EPA 200.7
- lithium — Sample date: 2023-09-12
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 380-62546-6 · Method EPA 200.7
- lithium — Sample date: 2024-03-20
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 380-88041-6 · 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
- CA3310025
- 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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