Forensic evidence record · ev-mt0000241-f-helena-lithium
Lithium
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
78 µg/LReported measurementSource observations (9)
- lithium — Sample date: 2023-07-19
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 C3G2684-01 · Method EPA 200.7
- lithium — Sample date: 2024-02-21
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 C4B2936-01 · Method EPA 200.7
- lithium — Sample date: 2023-07-19
Detected above reporting limit. = 78 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3G2684-03 · Method EPA 200.7
- lithium — Sample date: 2023-10-11
Detected above reporting limit. = 58 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C3J2161-01 · Method EPA 200.7
- lithium — Sample date: 2024-05-08
Detected above reporting limit. = 62 µg/L
Reporting limit: 9 µg/L. Detection limit: Not available. Benchmark unavailable
Source: src-ucmr5-2024 · UCMR5_All.txt · Sample C4E1298-01RE1 · Method EPA 200.7
- lithium — Sample date: 2023-07-19
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 C3G2684-05 · Method EPA 200.7
- lithium — Sample date: 2023-10-04
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 C3J0900-03 · Method EPA 200.7
- lithium — Sample date: 2024-02-21
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 C4B2936-03 · Method EPA 200.7
- lithium — Sample date: 2024-05-08
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 C4E1298-03 · 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
- MT0000241
- 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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