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EWG's Tap Water Database — 2021 UPDATE

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

Roslyn WD

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.

MORE ABOUT THIS CONTAMINANT

 

44

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND40ND
2016ND70ND
2017ND30ND
2018ND90ND
2019ND100ND

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
2014-01-081401261-002-POCSND
2014-02-111402494-002-PRIND
2014-03-271403J26-002-POCSND
2014-04-141404A24-002-POCSND
2014-05-081405607-002-POCSND
2014-06-121406931-002-POCSND
2014-07-211407E34-002ND
2014-09-111409892-002ND
2014-10-221410E31-002-POCSND
2014-11-211411E96-002-POCSND
2014-12-051412410-002-POCSND
2015-01-151501871-002-POCSND
2015-02-101502633-001-PRIND
2015-04-231504I52-002-PRIND
2015-05-281505K32-002-POCSND
2016-02-111602918-002ND
2016-02-111602918-001ND
2016-07-181607D67-002ND
2016-08-161608E60-002ND
2016-09-291609P72-001ND
2016-10-25702896002-SOCSND
2016-12-14706837001-SOCND
2017-02-157011343002ND
2017-04-067015144002ND
2017-05-107018231002ND
2018-02-277043967002-POCND
2018-03-137045126002ND
2018-05-307053122001-SECND
2018-07-267059540002-POCND
2018-08-077060662002-POCND
2018-09-177065090001ND
2018-10-257069045002ND
2018-11-287072146002ND
2018-12-047072741002ND
2019-01-087075818002ND
2019-02-147079548002ND
2019-03-047081159002ND
2019-04-117085552002ND
2019-06-137093546002ND
2019-07-257098830002-POCND
2019-08-1470101279002ND
2019-09-1270104647001ND
2019-10-1670108611002ND
2019-11-1370111657002ND