Know Your Environment. Protect Your Health.

1,1,2-Trichloroethane

CTWC - Unionville System

NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for 1,1,2-trichloroethane. Sample information shown below was taken by Metropolitan District Commission.

1,1,2-Trichloroethane is a volatile neurotoxic solvent used for manufacturing products such as plastic wrap and carpet backing. It causes liver tumors in animal studies. Read More.

The EPA classifies 1,1,2- trichloroethane as a possible human carcinogen. The California public health goal of 0.3 parts per billion, set to protect against cancer, is 16 times lower than the amount allowed by the federal government, which is a Maximum Contaminant Level of 5 parts per billion.

Click here to read more about carcinogenic VOCs.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020ND50ND
2021ND50ND
2022ND40ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.3 ppb

The EWG Health Guideline of 0.3 ppb for 1,1,2-trichloroethane 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 1,1,2-trichloroethane, established in 1992, was based on analytical detection limits at the time that the standard was set. This limit may not fully protect against the risk of cancer due to 1,1,2-trichloroethane exposure.

ppb = parts per billion

All test results

NOTE: CTWC - Unionville System purchases water from Metropolitan District Commission which is required to test for 1,1,2-trichloroethane. Sample information shown below was taken by Metropolitan District Commission.

Date Lab ID Result
2018-07-16AE00927GEND
2018-07-16AE00912GEND
2018-07-16AE00911GEND
2019-06-05AE29314GEND
2019-06-05AE29313GEND
2019-06-05AE29315GEND
2020-06-02AE59301GEND
2020-06-02AE59305GEND
2020-06-02AE59302GEND
2021-11-23V300107450 300107457ND
2021-11-23V300107451 300107463ND
2021-11-29V300109635 300109637ND
2022-12-15V300287053 300287060ND
2022-12-15V300287072 300287079ND
2022-12-15V300287100 300287107ND
2023-12-06V300456527 300456529ND
2023-12-06V300456525 300456531ND
2023-12-06V300456533 300456535ND