1,1-Dichloroethylene
Norwich Public Utilities
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
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 |
|---|---|---|---|---|
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 3 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-09-18 | PH-0453-6304497VOC1 | ND |
| 2018-09-18 | PH-0453-6304496VOC1 | ND |
| 2018-10-03 | PH-0453-6304498VOC1 | ND |
| 2019-08-29 | PH-0453-6305609VOC1 | ND |
| 2019-08-29 | PH-0453-6305611VOC1 | ND |
| 2019-09-16 | PH-0453-6305610VOC1 | ND |
| 2020-07-09 | PH-0453-6306438VOC1 | ND |
| 2020-07-09 | PH-0453-6306437VOC1 | ND |
| 2020-07-09 | PH-0453-6306436VOC1 | ND |
| 2021-06-07 | PH-0453-6307352VOC1 | ND |
| 2021-06-23 | PH-0453-6307354VOC1 | ND |
| 2022-01-18 | PH-0453-6307960VOC1 | ND |
| 2022-02-03 | PH-0453-6307962VOC1 | ND |
| 2022-11-29 | PH-0453-6307961VOC1 | ND |
| 2023-11-14 | D3K1545-01VOC | ND |
| 2023-11-14 | D3K1545-02VOC | ND |
| 2023-11-14 | D3K1545-03VOC | ND |