South Dakota Water Science Center
USGS IN YOUR STATE
USGS Water Science Centers are located in each state.
MTBE Health Advisory NoticeSince this publication was issued, the U.S. Environmental Protection Agency (USEPA) has changed the advisory for methyl tert-butyl ether (MTBE). The updated advisory is 20-40 micrograms per liter and is termed a "drinking water advisory" (rather than the previously issued draft "drinking water health advisory"). The new advisory is described in USEPA publication EPA-822-F-97-009, Drinking Water Advisory: Consumer Acceptability Advice and Health Effects Analysis on Methyl Tertiary-Butyl Ether (MtBE), which is available on the World Wide Web at :
or by calling the USEPA Safe Drinking Water Hotline (1-800-426-4791).