This document has been prepared to allow toxicological evaluation of the unregulated contaminant g-butyrolactone in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2002), or as a contaminant in a drinking water treatment chemical evaluated under NSF/ANSI 60 (2002). 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.

This document has been prepared to allow toxicological evaluation of the unregulated contaminant n-butyl acetate in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2002), or as a contaminant in a drinking water treatment chemical evaluated under NSF/ANSI 60 (2002). 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.

This document has been prepared to allow toxicological evaluation of the unregulated contaminant di-tert-butyl peroxide in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2002), or as a contaminant in a drinking water treatment chemical evaluated under NSF/ANSI 60 (2002). 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.

This document has been prepared to allow toxicological evaluation of the unregulated contaminant t-butanol in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2002), or as a contaminant in a drinking water treatment chemical evaluated under NSF/ANSI 60 (2002). 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.

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.

This document has been prepared to allow toxicological evaluation of the unregulated contaminant p-chloro-m-cresol in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2002), or as a contaminant in a drinking water treatment chemical evaluated under NSF/ANSI 60 (2002). 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.

This document has been prepared to allow toxicological evaluation of the unregulated contaminant methyl isobutyl ketone in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2005), or as a contaminant in a drinking water treatment chemical evaluated under NSF/ANSI 60 (2005). 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.

This document has been prepared to allow toxicological evaluation of the unregulated contaminant mineral oil in drinking water, as an extractant from one or more drinking water system components evaluated under NSF/ANSI 61 (2003e), or as a drinking water treatment chemical evaluated under NSF/ANSI 60 (2003e). 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. USP grade, white, and commercial mineral oils will be evaluated using criteria developed in this document, with potential impurities in the lower grades evaluated separately under the requirements of NSF/ANSI 60 (2003e) or 61 (2003e).

This document has been prepared to allow toxicological evaluation of the
unregulated contaminant iodine in drinking water, as an extractant from one
or more drinking water system components tested under NSF/ANSI 61 (2002) or
as a contaminant in a drinking water treatment chemical under NSF/ANSI 60
(2002). Iodine has also been evaluated as a drinking water treatment
chemical for direct addition to water under NSF/ANSI 60 (2002). 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.