1,1,1-Trichloroethane
Polk City Water Supply
NOTE: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Des Moines Water Works.
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 |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for 1,1,1-trichloroethane. Sample information shown below was taken by Des Moines Water Works.
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-09 | OE680202 | ND |
| 2018-07-16 | OE683859 | ND |
| 2018-10-08 | OE724008 | ND |
| 2019-07-09 | OE831885 | ND |
| 2019-07-16 | OE835743 | ND |
| 2019-08-21 | OE854920 | ND |
| 2020-10-12 | OE1332018 | ND |
| 2021-07-06 | OE1748365 | ND |
| 2021-07-06 | OE1748381 | ND |
| 2022-07-05 | OE2128016 | ND |
| 2022-07-05 | OE2128018 | ND |
| 2022-09-19 | OE2175664 | ND |
| 2023-10-16 | OE2350834 | ND |