Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Carbon tetrachloride

Valley Water Company

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

 

295

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND450ND
2015ND530ND
2016ND460ND
2017ND450ND
2018ND600ND
2019ND460ND

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
2014-05-059590-008-1030ND
2014-05-079588-002-1015ND
2014-05-079588-003-0900ND
2014-05-079588-004-0915ND
2014-05-079588-005-0945ND
2014-05-129590-008-1015ND
2014-05-199590-008-0800ND
2014-05-279590-008-0815ND
2014-06-029590-008-0730ND
2014-06-049588-002-1030ND
2014-06-049588-003-0905ND
2014-06-049588-004-0925ND
2014-06-049588-005-0925ND
2014-06-099590-008-0800ND
2014-06-169590-008-0800ND
2014-06-239590-008-0815ND
2014-07-029588-002-0905ND
2014-07-029588-003-0920ND
2014-07-029588-004-0955ND
2014-07-029588-005-1025ND
2014-07-029590-008-0910ND
2014-07-079590-008-0830ND
2014-07-149590-008-0800ND
2014-07-219590-008-0840ND
2014-07-289590-008-0830ND
2014-08-049590-008-0845ND
2014-08-059588-002-1055ND
2014-08-059588-003-0910ND
2014-08-059588-004-1030ND
2014-08-059588-005-0940ND
2014-08-119590-008-0730ND
2014-08-189590-008-0815ND
2014-08-259590-008-0850ND
2014-09-029590-008-0900ND
2014-09-039590-002-0810ND
2014-09-039590-003-0830ND
2014-09-099590-008-0800ND
2014-09-159590-008-0830ND
2014-09-229590-008-0830ND
2014-09-299590-008-0800ND
2014-10-069590-008-0730ND
2014-10-079590-003-0915ND
2014-10-139590-008-0830ND
2014-10-209590-008-0800ND
2014-10-279590-008-0730ND
2015-04-069590-008-1115ND
2015-04-109590-002-1030ND
2015-04-139590-008-0900ND
2015-04-209590-008-0800ND
2015-04-279590-008-0820ND
2015-05-049590-008-0900ND
2015-05-089590-008-1455ND
2015-05-119590-008-0815ND
2015-05-189590-008-0910ND
2015-05-269590-008-0830ND
2015-06-019588-002-1000ND
2015-06-019588-003-1030ND
2015-06-019588-004-0930ND
2015-06-019588-005-1055ND
2015-06-019590-008-1120ND
2015-06-049590-008-1335ND
2015-06-089590-008-1110ND
2015-06-159590-008-0815ND
2015-06-229590-008-0800ND
2015-06-299590-008-0830ND
2015-07-019588-002-1020ND
2015-07-019588-004-0950ND
2015-07-019588-005-0910ND
2015-07-069590-008-1120ND
2015-07-139590-008-0730ND
2015-07-209590-008-0740ND
2015-07-279590-008-0840ND
2015-08-039590-008-1045ND
2015-08-049588-002-0905ND
2015-08-049588-003-1025ND
2015-08-049588-004-0955ND
2015-08-049588-005-0915ND
2015-08-109590-008-1040ND
2015-08-179590-008-0800ND
2015-08-249590-008-0745ND
2015-08-319590-008-0830ND
2015-09-029590-003-1000ND
2015-09-089590-008-0800ND
2015-09-099590-002-1020ND
2015-09-099590-005-1110ND
2015-09-109590-008-1340ND
2015-09-149590-008-0800ND
2015-09-219590-008-1115ND
2015-09-289590-008-0800ND
2015-10-059590-002-0945ND
2015-10-059590-003-0850ND
2015-10-059590-008-0815ND
2015-10-129590-008-1100ND
2015-10-199590-008-0830ND
2015-10-269590-008-0805ND
2015-11-029590-002-0915ND
2015-11-029590-003-0930ND
2015-11-029590-008-0945ND
2016-03-019590-003-0810ND
2016-03-019590-008-0820ND
2016-04-049590-005-1215ND
2016-04-049590-008-1225ND
2016-04-119590-008-0810ND
2016-04-189590-008-0750ND
2016-04-259590-008-0815ND
2016-05-029590-008-0800ND
2016-05-049590-005-0815ND
2016-05-099590-008-0815ND
2016-05-139588-002-0930ND
2016-05-139588-003-1035ND
2016-05-139588-004-1010ND
2016-05-139588-005-0900ND
2016-05-169590-008-0840ND
2016-05-179590-003-1055ND
2016-05-179590-008-1115ND
2016-05-239590-008-0800ND
2016-06-019588-002-1025ND
2016-06-019588-003-0905ND
2016-06-019588-004-0930ND
2016-06-019588-005-0955ND
2016-06-019590-008-0820ND
2016-07-019588-002-0920ND
2016-07-019588-003-0930ND
2016-07-019588-004-1000ND
2016-07-019588-005-1030ND
2016-07-059590-008-0835ND
2016-07-119590-008-0815ND
2016-07-189590-008-0845ND
2016-07-259590-008-0815ND
2016-08-019590-008-0915ND
2016-08-039588-002-0900ND
2016-08-039588-003-0910ND
2016-08-039588-004-0935ND
2016-08-039588-005-1010ND
2016-08-089590-008-0820ND
2016-08-159590-008-0800ND
2016-08-229590-008-0840ND
2016-08-299590-008-0815ND
2016-10-039590-008-0820ND
2016-10-109590-008-0820ND
2016-10-189590-002-0815ND
2016-10-189590-003-0815ND
2016-10-189590-008-0815ND
2016-10-259590-008-0830ND
2017-05-159590-008-0950ND
2017-05-179588-002-1025ND
2017-05-179588-003-0930ND
2017-05-179588-004-0955ND
2017-05-179588-005-1055ND
2017-05-199590-008-1300ND
2017-05-229590-008-0820ND
2017-05-309590-008-0810ND
2017-06-029588-002-1045ND
2017-06-029588-003-1100ND
2017-06-029588-004-1120ND
2017-06-029588-005-1150ND
2017-07-059590-008-0900ND
2017-07-109590-008-0845ND
2017-07-119588-002-0950ND
2017-07-119588-003-0935ND
2017-07-119588-005-1015ND
2017-07-139588-004-1145ND
2017-07-189590-008-0845ND
2017-07-249590-008-0800ND
2017-08-019590-008-0850ND
2017-08-029588-002-0940ND
2017-08-029588-003-0950ND
2017-08-029588-004-1015ND
2017-08-029588-005-1045ND
2017-08-079590-008-0820ND
2017-08-149590-008-0815ND
2017-08-219590-008-0850ND
2017-08-289590-008-0820ND
2017-09-059590-008-0820ND
2017-09-119590-008-0950ND
2017-09-189590-008-0800ND
2017-09-259590-008-0800ND
2017-09-289590-002-1530ND
2017-09-289590-003-1545ND
2017-10-029590-008-0815ND
2017-10-039590-002-0745ND
2017-10-039590-003-0800ND
2017-10-099590-008-0830ND
2017-10-169590-008-0815ND
2017-10-239590-008-0840ND
2017-10-309590-008-1015ND
2017-11-029590-002-0845ND
2017-11-029590-003-0855ND
2017-11-029590-008-0915ND
2018-03-129590-002-1005ND
2018-03-129590-003-1050ND
2018-03-129590-008-1345ND
2018-03-192920-008-0850ND
2018-03-269590-008-1110ND
2018-05-029588-002-0855ND
2018-05-029588-003-0910ND
2018-05-029588-004-0950ND
2018-05-029588-005-1000ND
2018-05-039590-008-0735ND
2018-05-079590-008-0800ND
2018-05-149590-008-0910ND
2018-05-229590-008-0905ND
2018-05-299590-008-1445ND
2018-06-049590-008-0800ND
2018-06-059588-002-0910ND
2018-06-059588-003-0920ND
2018-06-059588-004-0940ND
2018-06-059588-005-1010ND
2018-06-119590-008-0805ND
2018-06-189590-008-0840ND
2018-06-252920-008-0802ND
2018-06-259590-008-0802ND
2018-07-022920-008-0800ND
2018-07-029590-008-0800ND
2018-07-039588-002-0910ND
2018-07-039588-003-0920ND
2018-07-039588-004-0935ND
2018-07-039588-005-1000ND
2018-07-099590-008-0840ND
2018-07-162920-008-0815ND
2018-07-169590-008-0815ND
2018-07-239590-008-0800ND
2018-07-309590-008-0815ND
2018-08-019588-002-0920ND
2018-08-019588-003-0930ND
2018-08-019588-004-1005ND
2018-08-019588-005-1020ND
2018-08-062920-008-1515ND
2018-08-069590-008-1515ND
2018-08-139590-008-0800ND
2018-08-209590-008-0815ND
2018-08-279590-008-0820ND
2018-09-049590-002-0930ND
2018-09-049590-003-0910ND
2018-09-049590-008-0800ND
2018-09-109590-008-0800ND
2018-09-179590-008-0810ND
2018-09-249590-008-0800ND
2018-10-019590-008-1050ND
2018-10-039590-002-1010ND
2018-10-039590-003-1020ND
2018-10-089590-008-0820ND
2018-10-179590-008-0800ND
2018-10-229590-008-0800ND
2018-10-299590-008-0830ND
2018-11-059590-008-0800ND
2018-11-069590-002-0745ND
2018-11-069590-003-0850ND
2018-11-129590-008-0745ND
2019-05-069590-008-1315ND
2019-05-079588-002-0915ND
2019-05-079588-003-0925ND
2019-05-079588-004-0940ND
2019-05-079588-005-1010ND
2019-05-139590-008-0750ND
2019-05-209590-008-0800ND
2019-05-289590-008-0820ND
2019-06-039590-008-0830ND
2019-06-049588-002-0905ND
2019-06-049588-003-0915ND
2019-06-049588-004-0945ND
2019-06-049588-005-1010ND
2019-06-109590-008-0800ND
2019-06-179590-008-0810ND
2019-06-249590-008-0830ND
2019-07-019590-008-0800ND
2019-07-029588-002-0915ND
2019-07-029588-003-0925ND
2019-07-029588-004-0950ND
2019-07-089590-008-0810ND
2019-07-159590-008-0840ND
2019-07-229590-008-0800ND
2019-07-299590-008-0830ND
2019-08-059590-008-0855ND
2019-08-069588-002-0900ND
2019-08-069588-003-0910ND
2019-08-069588-004-0930ND
2019-08-129590-008-0845ND
2019-08-199590-008-0850ND
2019-08-269590-008-0825ND
2019-09-039590-002-0920ND
2019-09-039590-003-0930ND
2019-09-039588-005-1035ND
2019-09-039590-008-0800ND
2019-09-099590-008-0915ND
2019-09-169590-008-0810ND
2019-09-239590-008-0830ND
2019-10-019590-008-0807ND
2019-10-029590-002-1035ND
2019-10-029590-003-1010ND
2019-10-029588-005-0915ND
2019-10-079590-008-0845ND
2019-10-149590-008-0815ND
2019-10-219590-008-0820ND
2019-10-289590-008-0830ND