1,1,1-Trichloroethane
Upper Hanover Water Authority
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.
50
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 |
|---|---|---|---|---|
| 2018 | 0.533 ppb | 6 | 4 | ND - 0.800 ppb |
| 2019 | 0.540 ppb | 5 | 3 | ND - 1.000 ppb |
| 2020 | 0.511 ppb | 9 | 5 | ND - 1.000 ppb |
| 2021 | 0.170 ppb | 10 | 2 | ND - 0.900 ppb |
| 2022 | ND | 13 | 0 | ND |
| 2023 | ND | 7 | 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
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-30 | 8001978-01 | 0.800 ppb |
| 2018-04-25 | 8008140-01 | 0.800 ppb |
| 2018-07-17 | 8017906-01 | 0.800 ppb |
| 2018-07-25 | 8019752-01 | ND |
| 2018-07-25 | 8019752-02 | ND |
| 2018-10-10 | 8028641-01 | 0.800 ppb |
| 2019-01-23 | 8038660-01 | 0.800 ppb |
| 2019-05-07 | 9009685-01 | 1.000 ppb |
| 2019-08-21 | 8038658-01 | ND |
| 2019-09-24 | 9034252-01 | ND |
| 2019-12-11 | 9033962-01 | 0.900 ppb |
| 2020-03-18 | 21847899.00 | 1.000 ppb |
| 2020-03-20 | 21847934.00 | 1.000 ppb |
| 2020-03-20 | 21847933.00 | ND |
| 2020-04-28 | 22024175.00 | 0.900 ppb |
| 2020-04-28 | 22024174.00 | ND |
| 2020-06-24 | 22417309.00 | ND |
| 2020-07-01 | 22417310.00 | 0.900 ppb |
| 2020-10-06 | 23183414.00 | 0.800 ppb |
| 2020-11-20 | 23362971.00 | ND |
| 2021-03-16 | 24061102.00 | ND |
| 2021-03-19 | 24061103.00 | 0.800 ppb |
| 2021-04-21 | 24248448.00 | ND |
| 2021-04-30 | 24248600.00 | ND |
| 2021-07-06 | 24829859.00 | ND |
| 2021-07-09 | 24830012.00 | ND |
| 2021-10-05 | 25405593.00 | 0.900 ppb |
| 2021-10-29 | 25405750.00 | ND |
| 2021-12-29 | 25765028.00 | ND |
| 2021-12-29 | 25765007.00 | ND |
| 2022-02-01 | 25943625.00 | ND |
| 2022-02-01 | 25943624.00 | ND |
| 2022-02-01 | 25943626.00 | ND |
| 2022-02-23 | 26118551.00 | ND |
| 2022-02-23 | 26118552.00 | ND |
| 2022-05-05 | 26649370.00 | ND |
| 2022-05-06 | 26649371.00 | ND |
| 2022-06-02 | 26649548.00 | ND |
| 2022-06-03 | 26649549.00 | ND |
| 2022-07-07 | 27037989.00 | ND |
| 2022-07-08 | 27037990.00 | ND |
| 2022-12-01 | 27999418.00 | ND |
| 2022-12-02 | 27999419.00 | ND |
| 2023-01-04 | 28173532.00 | ND |
| 2023-04-10 | 28703172.00 | ND |
| 2023-04-11 | 28703171.00 | ND |
| 2023-04-11 | 28703170.00 | ND |
| 2023-07-03 | 29302593.00 | ND |
| 2023-10-03 | 29700867.00 | ND |
| 2023-11-28 | 30246504.00 | ND |