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EWG's Tap Water Database — 2019 UPDATE

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Styrene

Garden City Water and Sewer System

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND30ND
2014ND10ND
2015ND10ND
2016ND90ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2012-05-15V1214184ND
2013-05-13V1320406ND
2013-05-13V1320403ND
2013-05-14V1320582ND
2014-05-21V1418260ND
2015-05-28V1520664ND
2016-05-26V1622949ND
2016-05-26V1622899ND
2016-05-26V1622901ND
2016-05-26V1622947ND
2016-05-26V1622903ND
2016-05-27V1623033ND
2016-05-27V1623037ND
2016-08-09V1635724ND
2016-11-10V1651744ND
2017-02-13V1705738ND
2017-05-10V1719304ND
2017-05-17V1720632ND
2017-07-12V1730455ND
2017-10-02V1745702ND