Know Your Environment. Protect Your Health.

Styrene

Foothills Mobile Home Ranch

Styrene is a volatile cancer-causing chemical used for manufacturing Styrofoam (polystyrene) and other plastics. Releases from industrial production sites and hazardous waste landfills cause styrene contamination in drinking water. Read More.

In addition to increasing the risk of cancer, styrene can also damage the liver and the nervous system. California set a public health goal for styrene in drinking water at 0.5 parts per billion. The federal Maximum Contaminant Level (MCL) allows up to 100 parts per billion of styrene in water, which is 200 times more than the California recommended level.

Click here to read more about carcinogenic VOCs.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND30ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for styrene 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 cancer.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for styrene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s. This limit may not fully protect against the risk of cancer due to styrene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-31AE11609ND
2018-01-31AE11611ND
2018-01-31AE11607ND
2019-03-11AE57833ND
2019-03-11AE57857ND
2019-03-11AE57871ND
2020-03-25AF04538ND
2020-03-25AF04544ND
2020-03-25AF04546ND
2021-02-03AF42462ND
2021-06-14AF57788ND
2021-06-14AF57792ND
2022-03-02AF87267ND
2022-06-29AG02797ND
2022-06-29AG02831ND
2023-03-07Q2309795001ND
2023-06-12AG44029ND
2023-06-12AG44031ND