1,1,1-Trichloroethane

Bellingham Dpw Water Sewer Div.

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2013	N/A	0	N/A
2014	ND	12	ND
2015	ND	12	ND
2016	N/A	0	N/A
2017	ND	11	ND
2018	ND	5	ND
2019	ND	11	ND

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	Result
2014-05-19	ND
2014-05-19	ND
2014-05-19	ND
2014-05-19	ND
2014-05-19	ND
2014-05-19	ND
2014-05-21	ND
2014-05-21	ND
2014-06-16	ND
2014-06-16	ND
2014-06-16	ND
2014-06-16	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-15	ND
2015-06-29	ND
2015-06-29	ND
2015-06-29	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-05-15	ND
2017-09-18	ND
2018-05-31	ND
2018-05-31	ND
2018-09-17	ND
2018-12-17	ND
2018-12-17	ND
2019-03-11	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND
2019-04-26	ND