1,1,1-Trichloroethane
Red Creek Municipal Utility District
NOTE: Red Creek Municipal Utility District purchases water from City of San Angelo which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by City of San Angelo.
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 | ND | 9 | 0 | ND |
| 2015 | ND | 1 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 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: Red Creek Municipal Utility District purchases water from City of San Angelo which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by City of San Angelo.
| Date | Lab ID | Result |
|---|---|---|
| 2014-04-29 | AC52069 | ND |
| 2014-04-29 | AC52067 | ND |
| 2014-04-29 | AC52065 | ND |
| 2014-04-29 | AC52063 | ND |
| 2014-04-29 | AC52037 | ND |
| 2014-04-29 | AC52059 | ND |
| 2014-04-29 | AC52039 | ND |
| 2014-04-29 | AC52071 | ND |
| 2014-08-11 | AC63095 | ND |
| 2015-08-12 | AD03968 | ND |
| 2016-02-17 | AD24323 | ND |
| 2016-05-17 | AD37069 | ND |
| 2016-07-20 | AD45007 | ND |
| 2016-11-09 | AD57412 | ND |
| 2017-05-09 | Q1719085002 | ND |
| 2018-02-28 | Q1808687007 | ND |
| 2019-05-07 | Q1920785002 | ND |