1,1,1-Trichloroethane
Dedham Westwood Water District
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.
35
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 6 | 0 | ND |
| 2015 | ND | 6 | 0 | ND |
| 2016 | ND | 6 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 0 | 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 |
|---|---|
| 2014-01-07 | ND |
| 2014-01-07 | ND |
| 2014-04-08 | ND |
| 2014-07-22 | ND |
| 2014-07-22 | ND |
| 2014-10-22 | ND |
| 2015-03-11 | ND |
| 2015-03-11 | ND |
| 2015-04-07 | ND |
| 2015-07-28 | ND |
| 2015-07-29 | ND |
| 2015-11-17 | ND |
| 2016-01-05 | ND |
| 2016-01-05 | ND |
| 2016-04-05 | ND |
| 2016-07-12 | ND |
| 2016-07-12 | ND |
| 2016-10-04 | ND |
| 2017-01-04 | ND |
| 2017-01-04 | ND |
| 2017-04-04 | ND |
| 2017-08-04 | ND |
| 2017-08-04 | ND |
| 2017-10-19 | ND |
| 2018-01-24 | ND |
| 2018-01-24 | ND |
| 2018-04-02 | ND |
| 2018-07-11 | ND |
| 2018-10-26 | ND |
| 2019-01-30 | ND |
| 2019-01-30 | ND |
| 2019-05-16 | ND |
| 2019-08-28 | ND |
| 2019-08-28 | ND |
| 2019-10-23 | ND |