1,1,1-Trichloroethane
Dewey Beach Water Department
NOTE: Dewey Beach Water Department purchases water from Rehoboth Beach Water Department which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Rehoboth Beach 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 1 | 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
NOTE: Dewey Beach Water Department purchases water from Rehoboth Beach Water Department which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Rehoboth Beach Water Department.
| Date | Lab ID | Result |
|---|---|---|
| 2015-11-17 | S637349 | ND |
| 2016-08-30 | S694033 | ND |
| 2016-12-21 | S694897 | ND |
| 2017-08-22 | S738553 | ND |
| 2018-11-29 | S850881 | ND |
| 2018-11-29 | S850883 | ND |
| 2018-11-29 | S850885 | ND |
| 2018-12-14 | S853797 | ND |
| 2019-07-09 | S895563 | ND |
| 2019-09-23 | S909181 | ND |