National Private Well Protection Act of 2005 - Requires any private property owner whose property includes a well that has fewer than 15 service connections and does not regularly serve at least 25 individuals for at least 60 days each year to: (1) conduct tests on such wells to determine the level of contaminants in the well water; (2) disclose the results of such tests to any prospective buyer or lessee of the property; and (3) provide the results of such tests to the Environmental Protection Agency (EPA). Allows civil remedies and penalties for nondisclosure of test results to prospective buyers or lessees or to the EPA.
Requires the EPA Administrator to collect, compile, and maintain the results of such tests and make them available to the public.