Know Your Environment. Protect Your Health.

Carbon tetrachloride

Walnut Grove Utilities

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.

 

71

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND120ND
2020ND90ND
2021ND130ND
2022ND180ND
20230.1000 ppb141ND - 1.40 ppb

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

Date Lab ID Result
2018-03-07282520-2018-DWND
2018-06-06287632-2018-DWND
2018-08-15292292-2018-DWVND
2018-08-15292293-2018-DWVND
2018-10-16295667-2018-DWVND
2019-02-26301436-2019-DWVND
2019-02-26301437-2019-DWND
2019-03-05301698-2019-DWVND
2019-03-05301699-2019-DWND
2019-03-12302098-2019-DWND
2019-03-12302099-2019-DWAND
2019-03-12302100-2019-DWVND
2019-04-02303159-2019-DWVND
2019-04-09303654-2019-DWND
2019-08-13310365-2019DWND
2019-12-03317113-2019-DWND
2019-12-04317121-2019-DWAND
2020-03-12321782-2020-DWVND
2020-03-12321782-2020-DWVND
2020-03-18322191-2020-DWVND
2020-06-11326414-2020-DWVND
2020-06-11326413-2020-DWND
2020-08-24331119-2020-DWND
2020-08-24331118-2020-DWND
2020-11-17335914-2020-DWVND
2020-11-24336266-2020-DWND
2021-03-187364282001VND
2021-03-187364280001ND
2021-04-227368589001ND
2021-05-137371332001VND
2021-07-217380944003AND
2021-08-121085142-01ND
2021-08-167384685001VND
2021-09-077387721001AND
2021-12-21810-11091-2ND
2021-12-21810-11047-1ND
2021-12-21810-11087-1ND
2021-12-21810-11089-1ND
2021-12-21810-11091-1ND
2022-03-08810-17576-1ND
2022-03-08810-17508-1ND
2022-03-08810-17505-1ND
2022-03-08810-17573-1ND
2022-03-09FWC0111CND
2022-03-09810-18451-1ND
2022-03-14FWC0176-01VND
2022-03-23810-18980-1ND
2022-05-16FWF0001-01CND
2022-05-16FWE0091-01ND
2022-05-16FWE0082-01BND
2022-05-23FWE0088ND
2022-07-11FWG0325AND
2022-07-11FWG0324ND
2022-07-11FWG0306ND
2022-10-26FWJ0181-01ND
2022-11-14FWJ0184ND
2022-11-15FWJ0191ND
2023-02-07FXB0061-01ND
2023-02-07FXB0070-01ND
2023-02-09FXB0077-01ND
2023-04-04FXC0510ND
2023-04-04FXC0539-01ND
2023-04-05FXC0546-01ND
2023-04-05FXC0561-011.40 ppb
2023-04-06FXC0504-01ND
2023-04-06FXD0264-01ND
2023-08-02FXF0580-01ND
2023-08-07FXH0354ND
2023-08-07FXH0356-01ND
2023-11-1468354501ND
2023-11-1468354601ND