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EWG's Tap Water Database — 2021 UPDATE

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Toluene

Sativa-L.A. County Water District

Toluene is a volatile solvent that harms the nervous and immune systems, damages the liver and may increase the risk of miscarriage and birth defects. Read More.

Toluene is a petroleum-derived chemical found in gasoline and used as a solvent in paints, adhesives and cleaning supplies. Toluene is highly neurotoxic. Exposure can cause fatigue and nausea, and may lead to nervous system disorders.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND30ND
2016ND30ND
2017ND30ND
2018ND20ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 150 ppb

The EWG Health Guideline of 150 ppb for toluene 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 1,000 ppb

The legal limit for toluene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-279588-001-1153ND
2014-04-079588-005-1145ND
2014-04-079588-002-1200ND
2014-04-249588-005-1050ND
2014-04-249588-002-1110ND
2015-01-059588-001-0950ND
2015-04-069588-005-0940ND
2015-09-189588-002-0850ND
2016-03-229588-001-1110ND
2016-04-049588-005-1010ND
2016-07-119588-002-1020ND
2017-02-079588-001-1000ND
2017-05-019588-005-0955ND
2017-07-149588-002-1010ND
2018-04-129588-005-1035ND
2018-07-319588-002-0940ND
2019-04-019588-005-0858ND
2019-07-019588-002-0957ND