Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Toluene

Golden State Water Company (GSWC) - San Dimas

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND

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
2012-02-089588-051-0940ND
2012-05-149588-014-1000ND
2013-02-209588-051-0925ND
2013-06-279588-014-1015ND
2014-02-199588-051-0930ND
2014-05-149588-014-1010ND
2015-02-189588-051-0920ND
2015-05-189588-014-0915ND
2016-02-169588-051-0825ND
2016-05-129588-014-0925ND
2017-01-059588-051-0800ND
2017-05-159588-014-0905ND