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EWG's Tap Water Database — 2019 UPDATE

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Carbon tetrachloride

Garden City Water and Sewer System

Carbon tetrachloride, a volatile carcinogenic solvent, has been used in industrial chemical production and as a dry cleaning ingredient. Read More.

Carbon tetrachloride is no longer permitted in products intended for home use in the U.S. In the past, it was widely used as a dry cleaning ingredient, fire extinguishing chemical, pesticide and chemical intermediate for manufacturing refrigerants. Carbon tetrachloride does not break down easily and can remain in groundwater for years. In addition to increasing cancer risk, carbon tetrachloride harms the liver and causes central nervous system depression, irregular heart rate, and kidney damage. Maternal exposure to carbon tetrachloride in drinking water has been associated with a risk of birth defects.

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 0.1 ppb

The EWG Health Guideline of 0.1 ppb for carbon tetrachloride 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) 5 ppb

The legal limit for carbon tetrachloride, established in 1987, was based on analytical detection limits at the time that the standard was set. This limit does not fully protect against the risk of cancer due to carbon tetrachloride 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