Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

San Diego Municipal Utility District 1

1,1,1-Trichloroethane is a solvent and a degreasing agent used for manufacturing metal products and as ingredient in cleaners and aerosols. Exposure to 1,1,1-trichloroethane can harm the nervous system, liver and circulatory system.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 200 ppb

The legal limit for 1,1,1-trichloroethane, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-12AE13322ND
2018-06-04AE28555ND
2019-02-11AE53819ND
2019-05-06AE64908ND
2020-06-04AF14192ND
2020-06-04AF14196ND
2021-06-07AF57519ND
2021-07-22AF63070ND
2021-11-29AF77508ND
2021-11-29AF77520ND
2022-01-20AF80982ND
2022-01-20AF81002ND
2023-02-22AG29940ND
2023-04-24AG37704ND
2023-07-24AG49832ND
2023-11-15AG63792ND