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EWG's Tap Water Database — 2019 UPDATE

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

St. Louis City

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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND40ND
2014ND60ND
2015ND60ND
2016ND90ND
2017ND60ND

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
2012-03-21HBCB032112M504ND
2012-03-23CRCW032312M504ND
2012-05-31CRCW053112M504ND
2012-06-01HBCB060112M504ND
2012-08-30CRCW083012M504ND
2012-08-30HBCB083012M504ND
2012-10-17HBCB101712M504ND
2012-10-23CRCW102312M504ND
2013-03-19HBCB031913M504ND
2013-03-19CRCW031913M504ND
2013-09-27CRCW092713M504ND
2013-09-27HBCB092713M504ND
2014-03-27CRCW032714M504ND
2014-03-27HBCB032714M504ND
2014-05-28AC26115ND
2014-05-28AC26114ND
2014-12-23HBCB122314M504ND
2014-12-30CRCW123014M504ND
2015-06-01AC47391ND
2015-06-01AC47390ND
2015-09-22HBCB092215M504ND
2015-09-22CRCW092215M504ND
2015-12-02HBCB120215M504ND
2015-12-04CRCW120415M504ND
2016-02-17HBCB021716M504ND
2016-02-23CRCW022316M504ND
2016-06-06AC75867ND
2016-06-06AC75866ND
2016-06-06AC77510ND
2016-08-16CRCW081616M504ND
2016-08-16HBCB081616M504ND
2016-10-20CRCW102016M504ND
2016-10-20HBCB102016M504ND
2017-01-30CRCW013017M504ND
2017-01-30HBCB013017M504ND
2017-08-02HBCB080217M504ND
2017-08-02CRCW080217M504ND
2017-11-07HBCB110717M504ND
2017-11-07CRCW110717M504ND