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Two maps of the Chesapeake Bay Watershed showing septic locations

By Environmental Health Program 2017 (approx.)
Two maps of the Chesapeake Bay Watershed showing locations of septic systems (left) and regulated facilities (right).
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Detailed Description

Two maps of the Chesapeake Bay Watershed showing locations of septic systems (left) and regulated facilities (right). Extensive databases detailing contaminant sources from local, state, and federal partners are used to understand source-sink linkages with observational field data.

Sources/Usage

Public Domain.