Know Your Environment. Protect Your Health.

Carbon tetrachloride

Ventura County Waterworks District No. 19 - Somis

NOTE: Ventura County Waterworks District No. 19 - Somis purchases water from Calleguas Municipal Water District which is required to test for carbon tetrachloride. Sample information shown below was taken by Calleguas Municipal Water District.

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.

 

50

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: 0.1 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

NOTE: Ventura County Waterworks District No. 19 - Somis purchases water from Calleguas Municipal Water District which is required to test for carbon tetrachloride. Sample information shown below was taken by Calleguas Municipal Water District.

Date Lab ID Result
2018-02-13CA5610050_015_015-201802131050ND
2018-02-13CA5610050_016_016-201802130945ND
2018-02-26CA5610050_001_001-201802260830ND
2018-02-26CA5610050_004_004-201802260915ND
2018-03-07CA5610050_013_013-201803071320ND
2018-03-08CA5610050_014_014-201803081330ND
2018-03-08CA5610050_012_012-201803081000ND
2018-03-15CA5610050_001_001-201803151300ND
2018-04-30CA5610050_017_017-201804301030ND
2018-11-05CA5610050_004_004-201811050820ND
2019-01-29CA5610050_001_001-201901290900ND
2019-01-29CA5610050_004_004-201901290930ND
2019-02-04CA5610050_018_018-201902040945ND
2019-02-05CA5610050_022_022-201902051020ND
2019-02-05CA5610050_023_023-201902050945ND
2019-02-07CA5610050_020_020-201902070840ND
2019-02-19CA5610050_019_019-201902191100ND
2019-11-04CA5610050_004_004-201911040800ND
2020-01-03CA5610050_007_007-202001031030ND
2020-01-07CA5610050_008_008-202001071030ND
2020-01-30CA5610050_004_004-202001300930ND
2020-01-30CA5610050_001_001-202001300945ND
2020-02-03CA5610050_011_011-202002030945ND
2020-02-10CA5610050_009_009-202002101145ND
2020-02-10CA5610050_006_006-202002101005ND
2020-02-12CA5610050_010_010-202002121110ND
2020-11-04CA5610050_004_004-202011040830ND
2021-02-10CA5610050_015_015-202102100830ND
2021-02-11CA5610050_004_004-202102110920ND
2021-02-11CA5610050_001_001-202102110820ND
2021-02-17CA5610050_012_012-202102171000ND
2021-02-17CA5610050_017_017-202102171100ND
2021-02-19CA5610050_013_013-202102191040ND
2021-02-22CA5610050_016_016-202102221117ND
2021-02-23CA5610050_014_014-202102231000ND
2022-01-03CA5610050_001_001-202201030846ND
2022-01-03CA5610050_004_004-202201030920ND
2022-01-04CA5610050_019_019-202201040850ND
2022-01-06CA5610050_023_023-202201060920ND
2022-01-13CA5610050_020_020-202201130950ND
2022-01-19CA5610050_022_022-202201191200ND
2022-01-19CA5610050_018_018-202201191115ND
2022-07-27CA5610050_021_021-202207271040ND
2023-03-15CA5610050_001_001-202303150945ND
2023-03-15CA5610050_004_004-202303150900ND
2023-03-21CA5610050_006_006-202303211000ND
2023-03-21CA5610050_008_008-202303211100ND
2023-03-22CA5610050_009_009-202303221140ND
2023-03-23CA5610050_007_007-202303230830ND
2023-09-21CA5610050_010_010-202309211250ND