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National Drinking Water Database


Ethyl-t-butyl ether (ETBE) in California


Ethyl-t-butyl ether is a synthetic chemical used as a fuel additive and an octane enhancer for gasoline.

The Most Polluted Communities in California

2 water utilities reported detecting Ethyl-t-butyl ether (ETBE) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Ethyl-t-butyl ether (ETBE) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1California Water Service-S San Francisco
South San Francisco, CA
54,0601 of 20.35 ppb
(0 to 0.7 ppb)
2South Tahoe Pud - Main
South Lake Tahoe, CA
60,0001 of 178< 0.01 ppb
(0 to 0.25 ppb)

Health Based Limits for Ethyl-t-butyl ether (ETBE)

There are no health based standards that EWG is using for this chemical

Violation Summary for Ethyl-t-butyl ether (ETBE) in California

There are no violations reported for this contaminant in California