Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Guilford Water Authority

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND10ND
2020ND30ND
2021ND50ND
2022ND10ND
2023ND70ND

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
2018-05-29(104)ND
2018-09-04(104)ND
2018-12-11(104)ND
2019-03-05(104)ND
2020-11-0223491229.00ND
2020-11-0223491208.00ND
2020-11-0223491187.00ND
2021-03-0924197200.00ND
2021-03-0924197221.00ND
2021-03-2924197243.00ND
2021-03-2924197264.00ND
2021-11-0425719757.00ND
2022-04-2526601198.00ND
2023-05-1729053148.00ND
2023-05-1729053169.00ND
2023-05-2429053219.00ND
2023-05-2429053198.00ND
2023-08-0129447934.00ND
2023-08-0129447954.00ND
2023-08-0129447914.00ND