This document has been prepared to allow toxicological evaluation of the unregulated contaminants titanium (leached from mined or natural products, or from titanium alloys) and titanium dioxide in drinking water, as extractants from one or more drinking water system components tested under NSF/ANSI 61 (2004), or as contaminants in drinking water treatment chemicals evaluated under NSF/ANSI 60 (2004). Both non-cancer and cancer endpoints have been considered, and risk assessment methodology developed by the U.S. Environmental Protection Agency (U.S. EPA) has been used.

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