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EWG's Tap Water Database — 2021 UPDATE

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1,1,1-Trichloroethane

Decker Hills

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
2014ND10ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-04-15AC50585ND
2015-09-23AD08265ND
2015-09-23AD08263ND
2015-09-23AD08267ND
2015-09-23AD08259ND
2016-06-01AD38987ND
2016-06-01AD38989ND
2016-06-01AD38973ND
2016-06-01AD38981ND
2017-08-25AD94469ND
2017-08-25AD94483ND
2017-08-25AD94481ND
2017-08-25AD94475ND
2018-07-09AE32630ND
2018-07-09AE32626ND
2018-07-09AE32644ND
2018-07-09AE32636ND
2019-03-19AE59057ND
2019-03-19AE59039ND
2019-03-19AE59055ND
2019-03-19AE59037ND