Know Your Environment. Protect Your Health.

Toluene

Mountain Springs Water Supply Corporation

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND50ND
2021ND40ND
2022ND40ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-13Q1810191003ND
2018-03-13Q1810191005ND
2018-03-13Q1810191001ND
2018-06-28Q1826059002ND
2019-01-28Q1904051006ND
2019-01-28Q1904051008ND
2019-01-28Q1904051010ND
2019-01-28Q1904051012ND
2020-05-13Q2019339010ND
2020-09-29Q2038336001ND
2020-11-05Q2043235022ND
2020-11-05Q2043235008ND
2020-11-05Q2043235004ND
2021-11-16Q2132004001ND
2021-11-16Q2132004003ND
2021-11-16Q2132004005ND
2021-11-16Q2132004007ND
2022-10-18Q2231735009ND
2022-10-18Q2231735011ND
2022-10-18Q2231735013ND
2022-10-18Q2231735015ND
2023-11-30Q2351033007ND
2023-11-30Q2351033009ND
2023-11-30Q2351033011ND
2023-12-13Q2353413003ND