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EWG's Tap Water Database — 2021 UPDATE

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

Big Bear City CSD

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND110ND
2017ND20ND
2018N/A00N/A
2019ND110ND

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
2014-06-113761-010-1105ND
2014-06-113761-009-1120ND
2014-06-113761-003-0730ND
2014-06-113761-001-0845ND
2015-06-103761-016-1030ND
2015-06-103761-015-0910ND
2015-06-103761-014-1015ND
2015-06-103761-012-1000ND
2016-04-063761-014-0745ND
2016-04-133761-005-0845ND
2016-05-043761-003-0735ND
2016-05-113761-009-1100ND
2016-07-063761-010-0730ND
2016-07-133761-012-0925ND
2016-08-033761-004-0745ND
2016-08-103761-006-1015ND
2016-09-143761-008-0810ND
2016-10-053761-016-1120ND
2016-10-123761-015-0925ND
2017-01-183761-002-0815ND
2017-06-213761-001-0850ND
2019-05-083761-020-0755ND
2019-05-083761-021-0756ND
2019-05-083761-009-1025ND
2019-07-033761-012-1000ND
2019-07-033761-010-1020ND
2019-07-313761-006-0900ND
2019-07-313761-004-1020ND
2019-09-043761-008-1015ND
2019-09-043761-002-0830ND
2019-10-023761-015-0910ND
2019-10-023761-016-0849ND