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EWG's Tap Water Database — 2019 UPDATE

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1,1,1-Trichloroethane

City of Ridgeland

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND10ND
2014ND10ND
2015ND60ND
2016ND20ND
2017ND10ND

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
2012-01-23120124-003VOND
2012-04-09120410-009VOND
2012-08-27120828-001VOND
2012-10-22121023-004VOND
2013-06-03130604-004VOND
2014-06-23140624-002VOND
2015-07-28150729-005VOND
2015-08-31150901-018VOND
2015-08-31150901-017VOND
2015-08-31150901-016VOND
2015-08-31150901-012VOND
2015-08-31150901-011VOND
2016-07-18160719-021VOND
2016-09-26160927-008VOND
2017-08-28170829-010VOND