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EWG's Tap Water Database — 2021 UPDATE

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Carbon tetrachloride

City of South Pasadena

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.

MORE ABOUT THIS CONTAMINANT

 

214

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND520ND
2015ND520ND
2016ND450ND
2017ND510ND
2018ND140ND
2019N/A00N/A

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
2014-01-079590-007-0906ND
2014-01-149590-007-0942ND
2014-01-219590-007-0958ND
2014-01-289590-007-1010ND
2014-02-049590-007-1010ND
2014-02-119590-007-0905ND
2014-02-189590-007-0910ND
2014-02-259590-007-0959ND
2014-03-049590-007-0934ND
2014-03-119590-007-1000ND
2014-03-189590-007-1000ND
2014-03-259590-007-0910ND
2014-04-019590-007-0925ND
2014-04-089590-007-0933ND
2014-04-159590-007-0950ND
2014-04-229590-007-1010ND
2014-04-299590-007-1000ND
2014-05-069590-007-0917ND
2014-05-139590-007-0910ND
2014-05-209590-007-1000ND
2014-05-279590-007-0935ND
2014-06-039590-007-0957ND
2014-06-109590-007-0942ND
2014-06-179590-007-0920ND
2014-06-249590-007-0932ND
2014-07-019590-007-1009ND
2014-07-089590-007-1000ND
2014-07-159590-007-1030ND
2014-07-229590-007-1005ND
2014-07-299590-007-0915ND
2014-08-059590-007-0902ND
2014-08-129590-007-0956ND
2014-08-199590-007-1005ND
2014-08-269590-007-1005ND
2014-09-029590-007-1025ND
2014-09-099590-007-0916ND
2014-09-169590-007-0907ND
2014-09-239590-007-1000ND
2014-09-309590-007-0932ND
2014-10-079590-007-1015ND
2014-10-149590-007-1010ND
2014-10-219590-007-0920ND
2014-10-289590-007-0914ND
2014-11-049590-007-0950ND
2014-11-129590-007-1000ND
2014-11-189590-007-1000ND
2014-11-249590-007-1115ND
2014-12-019590-007-1431ND
2014-12-099590-007-0915ND
2014-12-159590-007-1003ND
2014-12-239590-007-0943ND
2014-12-309590-007-1010ND
2015-01-069590-007-1010ND
2015-01-139590-007-1040ND
2015-01-209590-007-0947ND
2015-01-279590-007-1010ND
2015-02-039590-007-0958ND
2015-02-109590-007-1030ND
2015-02-179590-007-0750ND
2015-02-249590-007-0854ND
2015-03-039590-007-0900ND
2015-03-109590-007-0953ND
2015-03-179590-007-1000ND
2015-03-249590-007-1010ND
2015-03-319590-007-1005ND
2015-04-079590-007-0900ND
2015-04-149590-007-0904ND
2015-04-219590-007-1010ND
2015-04-289590-007-1010ND
2015-05-059590-007-0905ND
2015-05-129590-007-0940ND
2015-05-199590-007-0852ND
2015-05-269590-007-0855ND
2015-06-029590-007-0930ND
2015-06-099590-007-0915ND
2015-06-169590-007-0844ND
2015-06-239590-007-1030ND
2015-06-309590-007-0912ND
2015-07-079590-007-0953ND
2015-07-149590-007-0945ND
2015-07-229590-007-0930ND
2015-07-289590-007-0930ND
2015-08-049590-007-1010ND
2015-08-119590-007-0847ND
2015-08-189590-007-0857ND
2015-08-259590-007-0925ND
2015-09-019590-007-0935ND
2015-09-089590-007-1020ND
2015-09-149590-007-1200ND
2015-09-219590-007-0900ND
2015-09-299590-007-0845ND
2015-10-069590-007-0925ND
2015-10-139590-007-1000ND
2015-10-209590-007-1010ND
2015-10-279590-007-1020ND
2015-11-029590-007-0935ND
2015-11-109590-007-0945ND
2015-11-179590-007-0850ND
2015-11-239590-007-1024ND
2015-12-019590-007-1005ND
2015-12-089590-007-1005ND
2015-12-159590-007-0920ND
2015-12-219590-007-1000ND
2015-12-289590-007-0940ND
2016-01-049590-007-0900ND
2016-01-129590-007-1020ND
2016-01-189590-007-1025ND
2016-01-269590-007-0912ND
2016-02-029590-007-0910ND
2016-02-099590-007-0900ND
2016-02-169590-007-1015ND
2016-02-239590-007-1015ND
2016-03-019590-007-1010ND
2016-03-089590-007-0700ND
2016-03-159590-007-0910ND
2016-03-229590-007-0930ND
2016-03-299590-007-0930ND
2016-04-059590-007-1000ND
2016-04-129590-007-1025ND
2016-04-199590-007-0900ND
2016-04-259590-007-0930ND
2016-05-029590-007-0935ND
2016-05-109590-007-0945ND
2016-05-179590-007-0827ND
2016-05-249590-007-0945ND
2016-05-319590-007-0912ND
2016-06-079590-007-0910ND
2016-06-149590-007-0940ND
2016-06-289590-007-1000ND
2016-07-059590-007-1030ND
2016-07-129590-007-0910ND
2016-07-199590-007-0905ND
2016-07-269590-007-0930ND
2016-08-029590-007-1030ND
2016-08-099590-007-0910ND
2016-08-169590-007-1030ND
2016-08-239590-007-0857ND
2016-09-069590-007-0930ND
2016-09-139590-007-0920ND
2016-10-049590-007-0915ND
2016-10-119590-007-0922ND
2016-10-189590-007-0930ND
2016-10-259590-007-0930ND
2016-11-019590-007-1005ND
2016-11-089590-007-1040ND
2016-11-159590-007-0900ND
2016-11-219590-007-0920ND
2016-11-299590-007-0920ND
2016-12-129590-007-1005ND
2017-01-109590-007-0915ND
2017-01-179590-007-0730ND
2017-01-249590-007-1010ND
2017-01-319590-007-1015ND
2017-02-079590-007-0935ND
2017-02-149590-007-0930ND
2017-02-219590-007-0930ND
2017-02-289590-007-0945ND
2017-03-069590-007-1005ND
2017-03-149590-007-1010ND
2017-03-209590-007-0905ND
2017-03-289590-007-0840ND
2017-04-049590-007-0930ND
2017-04-119590-007-0915ND
2017-04-189590-007-1010ND
2017-04-249590-007-1040ND
2017-05-029590-007-0925ND
2017-05-099590-007-0845ND
2017-05-169590-007-1020ND
2017-05-229590-007-0935ND
2017-05-309590-007-1055ND
2017-06-069590-007-1045ND
2017-06-139590-007-0852ND
2017-06-209590-007-0912ND
2017-06-279590-007-0910ND
2017-07-119590-007-1020ND
2017-07-189590-007-1030ND
2017-07-259590-007-0902ND
2017-08-019590-007-0855ND
2017-08-089590-007-0912ND
2017-08-159590-007-0852ND
2017-08-229590-007-1010ND
2017-08-299590-007-1100ND
2017-08-319590-007-1110ND
2017-09-059590-007-1010ND
2017-09-129590-007-0900ND
2017-09-199590-007-0940ND
2017-09-269590-007-0940ND
2017-10-039590-007-1015ND
2017-10-109590-007-0920ND
2017-10-179590-007-0935ND
2017-10-249590-007-0858ND
2017-10-319590-007-1020ND
2017-11-079590-007-0930ND
2017-11-149590-007-1025ND
2017-11-209590-007-1030ND
2017-11-289590-007-0907ND
2017-12-059590-007-0905ND
2017-12-129590-007-0845ND
2017-12-199590-007-1045ND
2017-12-262920-007-1045ND
2018-01-029590-007-1105ND
2018-01-109590-007-0905ND
2018-01-169590-007-0918ND
2018-01-239590-007-0930ND
2018-01-309590-007-0945ND
2018-02-069590-007-1020ND
2018-02-129590-007-1015ND
2018-02-209590-007-0852ND
2018-02-279590-007-0855ND
2018-03-069590-007-0945ND
2018-03-129590-007-1115ND
2018-03-192920-007-1100ND
2018-03-199590-007-1100ND
2018-03-279590-007-1040ND