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Federal
Safe Drinking Water Information System (SDWIS)
U.S. Environmental Protection Agency —
The Safe Drinking Water Information System (SDWIS) contains information about public water systems and their violations of EPA's drinking water regulations. -
Federal
Office of Water Linked Data
U.S. Environmental Protection Agency —
The Office of Water Linked Data (OWLD) dataset stores EPA Water program information indexed to several National Hydrography Dataset frameworks. Indexing may be... -
Federal
National Listing of Fish Advisories
U.S. Environmental Protection Agency —
The National Listing of Fish Advisories (NLFA) is an online database that includes available information describing state-, tribal-, and federally-issued fish...