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EWG's Tap Water Database — 2021 UPDATE

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1,2-Dibromo-3-chloropropane (DBCP)

Paw Penn District

1,2-Dibromo-3-chloropropane is a pesticide fumigant banned in the 1970s after scientists discovered it caused sterility in men who worked with it. The chemical causes cancer in laboratory animals and may cause cancer in people. Read More.

This pesticide breaks down very slowly in the environment. It remains in groundwater and drinking water wells in the agricultural areas where it was sprayed in the past. Men exposed to this pesticide in the fields suffered from infertility and testicular damage, and tended to have fewer male babies.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015N/A00N/A
2016N/A00N/A
2017ND140ND
2018N/A00N/A
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0017 ppb

The EWG Health Guideline of 0.0017 ppb for 1,2-dibromo-3-chloropropane 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) 0.2 ppb

The legal limit for 1,2-dibromo-3-chloropropane, established in 1991, was based on analytical detection limits at the time that the standard was set. This limit does not fully protect against the risk of cancer due to 1,2-dibromo-3-chloropropane exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-0125337701ND
2014-04-0125337901ND
2014-04-0225337201ND
2014-04-0225338601ND
2014-04-0225337501ND
2014-04-0425337101ND
2014-04-0425338401ND
2014-04-0425338101ND
2014-07-0726114201ND
2014-07-0726113001ND
2014-07-0726113501ND
2014-07-0926113701ND
2014-07-0926114001ND
2014-07-0926113301ND
2014-07-0926113101ND
2014-09-0426113901ND
2017-04-0315975913ND
2017-04-0315975882ND
2017-04-0315975851ND
2017-04-0315975822ND
2017-04-0315975791ND
2017-04-0315975944ND
2017-04-0315975762ND
2017-07-0616450239ND
2017-07-0616450268ND
2017-07-0616450299ND
2017-07-0616450361ND
2017-07-1116450181ND
2017-07-1116450330ND
2017-07-1116450210ND
2019-07-1545716201ND
2019-10-3143999701ND