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EWG's Tap Water Database — 2021 UPDATE

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Toluene

Stetsonville Waterworks

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.

 

21

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
2019ND10ND

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
2014-02-17770769ND
2014-04-29782833ND
2014-08-04807834ND
2014-10-15825536ND
2015-02-16843801ND
2015-04-21855119ND
2015-07-15871238ND
2015-10-26890676ND
2016-01-18901621ND
2016-05-03919159ND
2016-08-03937060ND
2016-11-02956761ND
2017-03-09976843ND
2017-05-18991057ND
2017-07-241006015ND
2017-11-291031117ND
2018-03-081044130ND
2018-04-261052084ND
2018-08-211075087ND
2018-11-141092856ND
2019-08-131140463ND