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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Ethyl-t-butyl ether (ETBE)


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

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

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
2
-
-
People Served
114,060
-
-

Health Concerns for Ethyl-t-butyl ether (ETBE):


Ethyl-t-butyl ether (ETBE) Exposure by State

Water utilities in 1 states have reported detecting Ethyl-t-butyl ether (ETBE) in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Ethyl-t-butyl ether (ETBE) contamination
SystemsPopulation
California2114,060
Total2114,060

The Most Polluted Communities

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)

Testing Summary for Ethyl-t-butyl ether (ETBE)

Are tests routinely required for Ethyl-t-butyl ether (ETBE) by federal law?No
Water suppliers reporting tests for Ethyl-t-butyl ether (ETBE) (2004-2009):1,875 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):1.2 per year

Organ system toxicity (non-reproductive)

Type of concern: Reference:
One or more animal studies show sense organ effects at low doses RTECS®- National Technical Information Service 7630

Occupational hazards

Type of concern: Reference:
Allowed workplace exposures restricted to moderate doses RTECS®- TLV/BEI,2007

Irritation (skin, eyes, or lungs)

Type of concern: Reference:
One or more animal studies show skin irritation at low doses RTECS®- National Technical Information Service 7630



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
RTECS®- TLV/BEI,2007PROPANE, 2-ETHOXY-2-METHYL• occupationally related - ACGIH TLV (human TWA)
RTECS®- National Technical Information Service 7630PROPANE, 2-ETHOXY-2-METHYL• sense organ - Primary eye irritant (rabbit )
• skin - Primary skin irritant (rabbit )



references

government/industry list/academic study reference
RTECS®- TLV/BEI,2007RTECS®- TLV/BEI,2007
RTECS®- National Technical Information Service 7630RTECS®- National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. OTS0557630

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