Forensic evidence record · ev-ma4122000-f-hanover-lead
Lead (90th percentile)
A single published measurement record with its qualifier, sampling context, source identifier, method note, and stated limitations kept together.
Published evidence record
4 µg/LReported measurementMeasurement evidence
- Analyte
- Lead (90th percentile)
- Result qualifier
- =
- Reference basis
- 15 µg/L federal action level
- Sampling location
- Distribution System Tap
- Water system ID
- MA4122000
- Source ID
- src-sdwis-lcr
Laboratory context
No laboratory method note was published with this record.
Sampling context
This result represents a distribution system tap sample. It does not establish the condition at every distribution point or household tap.
Record limitation
A compliance summary across sampled distribution-system or household-tap locations; it does not describe the water at any single tap.
Source provenance
State SDWIS Compliance Record
Safe Drinking Water Information System (SDWIS) — Lead & Copper Rule 90th-percentile results
U.S. Environmental Protection Agency · Published 2024
90th-percentile lead results reported to SDWIS under the Lead & Copper Rule. A 90th-percentile summary describes sampled household taps across a system; individual homes with lead service lines or fixtures can differ.
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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