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EWG's Tap Water Database — 2021 UPDATE

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Toluene

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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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-03-12AD36992ND
2014-05-12AD39686ND
2014-09-17AD45599ND
2014-12-03AD48889ND
2015-03-17AD53075ND
2015-04-07AD53852ND
2015-09-10AD60706ND
2015-12-02AD67147ND
2016-02-10AD70498ND
2016-04-26AD74870ND
2016-09-13AD82303ND
2016-10-11AD83445ND
2017-03-08AD90864ND
2017-04-18AD92785ND
2017-07-19AD97732ND
2017-11-07AE03211ND
2018-02-27AE08318ND
2018-06-14AE13735ND
2018-09-05AE17680ND
2018-11-14AE21351ND
2019-03-07AE26871ND
2019-05-06AE29805ND
2019-08-06AE34770ND
2019-11-13AE40149ND