p-Dichlorobenzene
City of Post Falls
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 | N/A | 0 | 0 | N/A |
| 2019 | ND | 7 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 10 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|---|
| 2019-11-12 | V210892 | ND |
| 2019-11-13 | V210942 | ND |
| 2019-11-18 | V211063 | ND |
| 2019-11-18 | V211060 | ND |
| 2019-11-19 | V211104 | ND |
| 2019-12-09 | V211717 | ND |
| 2019-12-16 | V211918 | ND |
| 2021-11-30 | V202111052502 | ND |
| 2022-02-09 | V202202020202 | ND |
| 2022-03-09 | V202203020202 | ND |
| 2022-03-09 | V202203020101 | ND |
| 2022-03-14 | V202203025402 | ND |
| 2022-03-14 | V202203025302 | ND |
| 2022-04-27 | V202204053602 | ND |
| 2022-06-06 | V2022060086 | ND |
| 2022-06-07 | V2022060100 | ND |
| 2022-07-13 | V202207033802 | ND |
| 2022-11-01 | V202211003902 | ND |
| 2023-01-25 | V202301040802 | ND |
| 2023-05-15 | V202305028802 | ND |
| 2023-07-25 | VMDG08170102 | ND |
| 2023-07-25 | VMDG08170302 | ND |
| 2023-07-25 | VMDG08170502 | ND |
| 2023-07-25 | VMDG08170702 | ND |
| 2023-12-13 | V202312023502 | ND |