p-Dichlorobenzene
Westerly Water Department
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 |
|---|---|---|---|---|
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 4 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 14 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
|---|---|---|
| 2014-05-01 | BG39529-VOC | ND |
| 2014-05-01 | BG39528-VOC | ND |
| 2014-05-02 | BG40111-VOC | ND |
| 2014-05-02 | BG40109-VOC | ND |
| 2014-05-06 | BG41004-VOC | ND |
| 2014-05-08 | BG42439-VOC | ND |
| 2014-05-13 | BG43968-VOC | ND |
| 2014-05-14 | BG44525-VOC | ND |
| 2014-05-15 | BG45214-VOC | ND |
| 2014-08-13 | BG93035_TO12 | ND |
| 2014-08-13 | BG93034_TO12 | ND |
| 2014-10-14 | BH27157_TO12 | ND |
| 2015-04-14 | BJ02109_TO12 | ND |
| 2015-07-23 | BJ62467_TO12 | ND |
| 2015-07-23 | BJ62466_TO12 | ND |
| 2015-11-05 | BK18734_TO12 | ND |
| 2016-04-21 | BN17550_TO12 | ND |
| 2016-09-01 | BV01410_TO12 | ND |
| 2016-09-01 | BV01409_TO12 | ND |
| 2016-10-18 | BV54591_TO12 | ND |
| 2016-12-08 | BX01644_TO12 | ND |
| 2017-04-26 | BY10336_TO12 | ND |
| 2017-04-27 | BY11118_TO12 | ND |
| 2017-04-28 | BY11763_TO12 | ND |
| 2017-04-28 | BY11766_TO12 | ND |
| 2017-05-02 | BY13338_TO12 | ND |
| 2017-05-03 | BY14008_TO12 | ND |
| 2017-05-03 | BY14011_TO12 | ND |
| 2017-05-16 | BY21039_TO12 | ND |
| 2017-05-30 | BY30473_TO12 | ND |
| 2017-05-30 | BY30472_TO12 | ND |
| 2017-05-30 | BY30474_TO12 | ND |
| 2017-07-20 | BY68550_TO12 | ND |
| 2017-07-20 | BY68549_TO12 | ND |
| 2017-11-09 | BZ38811_TO12 | ND |
| 2018-05-30 | CA60979_TO12 | ND |
| 2018-09-04 | CB23931_TO12 | ND |
| 2018-12-19 | CC17412_TO12 | ND |
| 2019-05-14 | CD12482_TO12 | ND |
| 2019-08-01 | CD69857_TO12 | ND |
| 2019-11-07 | CE56488_TO12 | ND |