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EWG's Tap Water Database — 2019 UPDATE

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

Los Angeles Department of Water and Power

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND20ND
2014ND70ND
2015N/A00N/A
2016N/A00N/A
2017ND40ND

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
2012-04-261200-159-0940ND
2012-07-231200-159-1000ND
2012-10-041200-159-1130ND
2013-06-281200-159-1125ND
2013-07-161200-159-1155ND
2014-02-271200-159-0850ND
2014-05-081200-011-0930ND
2014-05-081200-133-0815ND
2014-05-301200-159-1010ND
2014-07-251200-159-1050ND
2014-08-071200-011-1120ND
2014-08-201200-133-0900ND
2017-02-211200-133-1210ND
2017-02-211200-011-1140ND
2017-05-091200-011-0940ND
2017-05-171200-133-0941ND