Know Your Environment. Protect Your Health.

1,1,1-Trichloroethane

Westchester County Water District #3

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-09-24AU20759POCSND
2019-11-12AV23848POCSND
2020-04-28AW07856POCSND
2020-11-09AW21633POCSND
2020-12-15AW23893-POCSND
2020-12-15AW23891-POCSND
2021-04-06AX06359-POCSND
2021-09-20AX19180-POCS-WD3ND
2021-09-20AX19184-POCS-WD3ND
2021-11-09AX22573-POCSND
2021-11-09AX22576-POCSND
2022-04-11AY05984-POCSND
2022-10-24AY19125-POCS-WD3ND
2022-10-24AY19127-POCS-WD3ND
2022-11-01AY19681-POCSND
2022-11-01AY19679-POCSND
2023-04-25AZ07359--POCSND
2023-10-19AZ19385-POCS-WD3ND
2023-10-19AZ19384-POCS-WD3ND
2023-11-01AZ20238-POCSND
2023-11-01AZ20240-POCSND