Know Your Environment. Protect Your Health.

Styrene

Sand Flat Water Supply Corporation

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
2018-03-05Q1808890006ND
2018-03-05Q1808890008ND
2018-03-05Q1808890004ND
2019-08-22Q1958681002ND
2019-08-22Q1958681004ND
2019-08-22Q1958681006ND
2020-06-11Q2023583005ND
2020-06-11Q2023583007ND
2020-10-08Q2039611001ND
2021-08-05Q2120790006ND
2021-08-05Q2120790010ND
2021-08-05Q2120790008ND
2022-05-19Q2214818003ND
2022-05-19Q2214818005ND
2022-05-19Q2214818007ND
2023-06-01Q2320545005ND
2023-06-01Q2320545007ND
2023-06-01Q2320545009ND