p-Dichlorobenzene
Connecticut Water Company - Northern Region-Western System
p-Dichlorobenzene is a carcinogenic insecticide used in mothballs, and added to deodorant blocks made for trash cans and toilets. Long-term exposure can cause liver damage and kidney problems.
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 | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 8 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 6 ppb
The EWG Health Guideline of 6 ppb for p-dichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
EPA Maximum Contaminant
Level (MCL): 75 ppb
The legal limit for p-dichlorobenzene, established in 1987, was based on toxicity studies conducted in laboratory animals in the 1980s. This limit may not fully protect against the risk of cancer due to p-dichlorobenzene exposure.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-23 | BZ78888VOC1 | ND |
| 2018-01-31 | BZ82950VOC1 | ND |
| 2018-07-13 | CA89901 | ND |
| 2019-01-02 | VOC1 200517309 | ND |
| 2019-03-15 | VOC1 200524883 | ND |
| 2020-01-02 | VOC1 200561504 | ND |
| 2020-06-29 | VOC1 200580772 | ND |
| 2020-08-11 | VOC1 200586573 | ND |
| 2020-09-21 | VOC1 200591014 | ND |
| 2020-10-07 | VOC1 200593218 | ND |
| 2021-03-05 | VOC1 200608707 | ND |
| 2021-09-14 | 300059932 300059934 | ND |
| 2022-01-24 | CK22294 | ND |
| 2022-01-25 | CK23175 | ND |
| 2022-01-25 | CK23176 | ND |
| 2022-02-01 | CK27428 | ND |
| 2022-02-16 | CK69359 | ND |
| 2022-08-26 | CM16199 | ND |
| 2022-09-08 | CM25672 | ND |
| 2022-09-20 | CM37295 | ND |
| 2023-01-17 | CN24238 | ND |
| 2023-12-13 | CP67269 | ND |