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EWG's Tap Water Database — 2021 UPDATE

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MTBE

Cal 20 Village and Meadow Pointe Park

MTBE was used as gasoline oxygenation additive to boost the octane number. In 2005, MTBE was replaced by ethanol as a gasoline additive. MTBE causes cancers in rats.

MORE ABOUT THIS CONTAMINANT

 

64

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201437.0 ppb1137.0 ppb
2015N/A00N/A
2016N/A00N/A
20175.27 ppb238ND - 22.0 ppb
20185.60 ppb206ND - 25.0 ppb
20191.20 ppb204ND - 21.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 13 ppb

The EWG Health Guideline of 13 ppb for MTBE was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-131610-001-070037.0 ppb
2017-04-281610-001-11008.70 ppb
2017-05-041610-002-1030ND
2017-05-261610-002-0710ND
2017-05-311610-001-074513.0 ppb
2017-06-121233-001-13405.60 ppb
2017-06-121233-004-133018.0 ppb
2017-06-121233-002-1250ND
2017-06-191610-001-071018.0 ppb
2017-06-191610-002-0725ND
2017-07-131610-002-0700ND
2017-08-111610-002-0645ND
2017-09-065867-002-0845ND
2017-09-261233-002-1315ND
2017-09-261233-004-1340ND
2017-09-261233-001-134522.0 ppb
2017-10-301610-002-0805ND
2017-11-101610-002-0950ND
2017-12-011610-002-0930ND
2017-12-151610-004-0750ND
2017-12-151610-001-072517.0 ppb
2017-12-181233-002-1125ND
2017-12-181233-004-1155ND
2017-12-181233-001-120519.0 ppb
2018-01-041610-002-0700ND
2018-02-231610-002-0715ND
2018-03-081233-001-134515.0 ppb
2018-03-081233-004-1340ND
2018-03-231610-002-1400ND
2018-03-231610-001-142018.0 ppb
2018-03-301610-001-071515.0 ppb
2018-04-301610-002-1030ND
2018-05-311610-002-0730ND
2018-06-191610-002-1100ND
2018-06-251233-001-134021.0 ppb
2018-06-251233-004-1330ND
2018-07-241610-002-0700ND
2018-08-311610-002-0720ND
2018-09-241233-004-1200ND
2018-09-241233-001-121018.0 ppb
2018-10-171610-002-0905ND
2018-12-171233-004-1330ND
2018-12-171233-001-134025.0 ppb
2018-12-301610-002-1840ND
2019-01-071233-006-11200.740 ppb
2019-01-071233-002-1115ND
2019-02-121233-006-1230ND
2019-02-121233-002-1220ND
2019-03-131233-004-1215ND
2019-03-131233-001-120521.0 ppb
2019-03-131233-005-1145ND
2019-03-131233-002-1135ND
2019-04-101233-002-1225ND
2019-04-101233-005-1230ND
2019-05-231233-002-1430ND
2019-05-231233-005-14400.530 ppb
2019-06-051233-005-1030ND
2019-06-251233-005-0910ND
2019-06-251233-002-0900ND
2019-06-251610-002-1930ND
2019-07-291233-002-1110ND
2019-07-291233-005-1120ND
2019-12-051644-006-11401.70 ppb
2019-12-051644-002-1130ND