p-Dichlorobenzene
Red Hill Water Authority
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 | 6 | 0 | ND |
| 2015 | ND | 5 | 0 | ND |
| 2016 | ND | 3 | 0 | ND |
| 2017 | ND | 9 | 0 | ND |
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 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 |
|---|---|---|
| 2014-03-12 | 140010197 | ND |
| 2014-03-12 | 140010198 | ND |
| 2014-03-12 | 140010199 | ND |
| 2014-05-14 | 140020004 | ND |
| 2014-07-23 | 140032263 | ND |
| 2014-11-05 | 140050162 | ND |
| 2015-02-18 | 12402518 | ND |
| 2015-03-04 | 12516316 | ND |
| 2015-04-22 | 12633996 | ND |
| 2015-07-29 | 13013715 | ND |
| 2015-11-18 | 13515016 | ND |
| 2016-02-03 | 13871055 | ND |
| 2016-02-03 | 13871076 | ND |
| 2016-11-10 | 15227181 | ND |
| 2017-02-08 | 15656510 | ND |
| 2017-02-08 | 15656511 | ND |
| 2017-02-08 | 15656512 | ND |
| 2017-03-29 | 15796772 | ND |
| 2017-05-31 | 16095728 | ND |
| 2017-07-26 | 16414768 | ND |
| 2017-09-26 | 16727973 | ND |
| 2017-09-26 | 16727974 | ND |
| 2017-10-18 | 16881225 | ND |
| 2018-02-07 | 8001980-01 | ND |
| 2018-04-25 | 8008151-01 | ND |
| 2018-07-17 | 8017901-01 | ND |
| 2018-08-07 | 8021854-01 | ND |
| 2018-10-22 | 8028636-01 | ND |
| 2019-02-06 | 9002686-01 | ND |
| 2019-05-07 | 9009679-01 | ND |
| 2019-06-25 | 9022004-01 | ND |
| 2019-08-21 | 9025620-01 | ND |
| 2019-09-24 | 9021809-01 | ND |
| 2019-12-16 | 9033958-01 | ND |