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EWG's Tap Water Database — 2019 UPDATE

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Toluene

City of South Houston

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND50ND
2016ND50ND
2017ND50ND

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
2015-01-21AC77109ND
2015-01-21AC77099ND
2015-01-21AC77093ND
2015-01-21AC77095ND
2015-01-21AC77101ND
2016-01-14AD18215ND
2016-01-14AD18219ND
2016-01-14AD18221ND
2016-01-14AD18205ND
2016-01-14AD18207ND
2017-01-06AD63617ND
2017-03-01AD72753ND
2017-03-01AD72765ND
2017-03-01AD72763ND
2017-03-01AD72785ND