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EWG's Tap Water Database — 2019 UPDATE

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

City of Baltimore

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.

 

35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND70ND
2014ND60ND
2015ND50ND
2016ND80ND
2017ND50ND

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
2012-04-300300002_01_TREATND
2012-04-300300002_02_TREATND
2012-07-100300002_01_00008ND
2012-07-100300002_02_00008ND
2013-01-250300002_01_TREATND
2013-01-250300002_02_TREATND
2013-01-250300002_02_TREATND
2013-02-280300002_02_00419ND
2013-02-280300002_01_00419ND
2013-09-030300002_02_COB09ND
2013-09-030300002_02_TREATND
2014-01-290300002_01_00348ND
2014-01-290300002_02_00348ND
2014-02-040300002_01_TREATND
2014-02-110300002_02_TREATND
2014-02-120300002_02_TREATND
2014-04-28030000202TREATEDND
2015-06-22E15004053003ND
2015-06-22E15004053001ND
2015-07-200300002_07202015ND
2015-07-200300002_07202015ND
2015-07-200300002_07202015ND
2016-05-23E16004413002ND
2016-05-23E16004413004ND
2016-05-23E16004413006ND
2016-07-19TREATED_AND
2016-07-19PLTS_1ND
2016-07-20PLTS_1_AND
2016-10-27TREATED_T1+T4ND
2016-10-27TREATED_A_AND
2017-04-20TREATED_A_1ND
2017-04-20TREATED_T4_AND
2017-04-20TREATED_T1ND
2017-06-20E17005034001ND
2017-06-20E17005035001ND