Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

North Wales 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.

 

69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND130ND
2019ND120ND
2020ND120ND
2021ND110ND
2022ND110ND
2023ND100ND

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
2018-03-1220180932ND
2018-03-1220180940ND
2018-03-1220180939ND
2018-03-1220180938ND
2018-03-1220180937ND
2018-03-1220180936ND
2018-03-1220180935ND
2018-03-1220180934ND
2018-03-1220180933ND
2018-03-1320180956ND
2018-06-0520182148ND
2018-09-0420183373ND
2018-12-1820184775ND
2019-03-0520190857ND
2019-03-1220190960ND
2019-03-1220190956ND
2019-03-1220190964ND
2019-03-1220190957ND
2019-03-1220190963ND
2019-03-1220190962ND
2019-03-1220190958ND
2019-03-1220190961ND
2019-03-1220190959ND
2019-09-0320193443ND
2019-12-0320194748ND
2020-03-0321849469.00ND
2020-03-0321849448.00ND
2020-03-0321849427.00ND
2020-03-0321849490.00ND
2020-03-0321849511.00ND
2020-03-0321849532.00ND
2020-03-0321849406.00ND
2020-03-0321849553.00ND
2020-06-0222418582.00ND
2020-06-0222418603.00ND
2020-09-0123001537.00ND
2020-12-0123539411.00ND
2021-03-0124062312.00ND
2021-03-0124062396.00ND
2021-03-0124062270.00ND
2021-03-0124062375.00ND
2021-03-0124062354.00ND
2021-03-0124062333.00ND
2021-03-0124062291.00ND
2021-03-0224062417.00ND
2021-06-0124640230.00ND
2021-09-0925222349.00ND
2021-12-1425766379.00ND
2022-03-0126289333.00ND
2022-03-0926289249.00ND
2022-03-0926289312.00ND
2022-03-0926289291.00ND
2022-03-0926289186.00ND
2022-03-0926289228.00ND
2022-03-0926289207.00ND
2022-03-0926289270.00ND
2022-06-0726844662.00ND
2022-09-2027443454.00ND
2022-12-0628000360.00ND
2023-03-0728523012.00ND
2023-03-0828522949.00ND
2023-03-0828522907.00ND
2023-03-0828522991.00ND
2023-03-0828522970.00ND
2023-03-0828522928.00ND
2023-06-0529110408.00ND
2023-06-1929110357.00ND
2023-09-1229701908.00ND
2023-11-1730073310.00ND