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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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND20ND
2016ND50ND
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
2015-09-02880412ND
2015-11-02892158ND
2016-03-01242831001ND
2016-03-22700328ND
2016-05-17255444001ND
2016-08-16272520001ND
2016-11-28290673001ND
2017-02-27301660001ND
2017-06-05319870001ND
2017-08-30339189001ND
2017-12-26360676001ND
2018-03-14371423001ND
2018-05-29385147001ND
2018-08-22403173001ND
2018-10-23199879ND
2019-03-20436653001ND
2019-06-24453752001ND
2019-08-19464655001ND
2019-12-18487030001ND