Forensic evidence record · ev-ca4410011-f-watsonville-lithium
Lithium
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
27.3 µg/LReported measurementSource observations (28)
- lithium — Sample date: 2024-07-09
Detected above reporting limit. = 26.6 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-103901-1 · Method EPA 200.7
- lithium — Sample date: 2024-10-01
Detected above reporting limit. = 27.3 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-116267-1 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 22.4 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-1 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 19.7 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-1 · Method EPA 200.7
- lithium — Sample date: 2024-07-22
Detected above reporting limit. = 19.4 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-105605-1 · Method EPA 200.7
- lithium — Sample date: 2025-01-22
Detected above reporting limit. = 19.2 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-132044-1 · Method EPA 200.7
- lithium — Sample date: 2024-07-22
Detected above reporting limit. = 18 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-105605-2 · Method EPA 200.7
- lithium — Sample date: 2025-01-22
Detected above reporting limit. = 18.1 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-132044-2 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 22.7 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-3 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 19.6 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-4 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 15.6 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-2 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 14.2 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-5 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 22.8 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-4 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 21.7 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-6 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 22.3 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-5 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 19.4 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-7 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 19.5 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-6 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 17.4 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-8 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 20.2 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-7 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 13.4 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-9 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 14 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-8 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 16.5 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-10 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 14.3 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-9 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
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 380-117446-11 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 18.8 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-10 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
Detected above reporting limit. = 16.2 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-117446-12 · Method EPA 200.7
- lithium — Sample date: 2024-04-15
Detected above reporting limit. = 18.6 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample 380-91966-11 · Method EPA 200.7
- lithium — Sample date: 2024-10-09
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 380-117446-13 · 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
- CA4410011
- 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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