1,1,1-Trichloroethane
Exeter Water Department
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.
17
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 2 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 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 | Lab ID | Result |
|---|---|---|
| 2014-07-09 | 133509.01 | ND |
| 2014-10-09 | 136708.02 | ND |
| 2015-07-16 | 145750.01 | ND |
| 2015-09-09 | 147823.01 | ND |
| 2015-11-18 | 150486.01 | ND |
| 2016-01-13 | 152193.01 | ND |
| 2016-04-07 | 154592.01 | ND |
| 2016-07-13 | 158246.01 | ND |
| 2016-07-21 | 158588.01 | ND |
| 2016-10-04 | 161298.01 | ND |
| 2017-07-11 | 170940.01 | ND |
| 2017-10-03 | 174234.01 | ND |
| 2018-07-11 | 184059.01 | ND |
| 2018-07-31 | 184895.01 | ND |
| 2018-10-03 | 187376.01 | ND |
| 2019-07-10 | 197719.01 | ND |
| 2019-10-08 | 201538.01 | ND |