Know Your Environment. Protect Your Health.

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

Crofton, City of

NOTE: Crofton, City of purchases water from Cedar-Knox Rural Water Project which is required to test for 1,2-dibromo-3-chloropropane (dbcp). Sample information shown below was taken by Cedar-Knox Rural Water Project.

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND40ND
2021ND40ND
2022ND40ND
2023ND40ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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

NOTE: Crofton, City of purchases water from Cedar-Knox Rural Water Project which is required to test for 1,2-dibromo-3-chloropropane (dbcp). Sample information shown below was taken by Cedar-Knox Rural Water Project.

Date Lab ID Result
2018-01-09532167ND
2018-04-09543814ND
2018-07-10561733ND
2018-07-23560148ND
2018-10-10578338ND
2019-01-14590611ND
2019-04-08600529ND
2019-07-08622413ND
2019-07-08621229ND
2019-10-15638237ND
2020-01-13651187ND
2020-01-28650321ND
2020-04-13666994ND
2020-07-14681444ND
2020-07-20684271ND
2020-10-13701048ND
2021-01-11716861ND
2021-04-12727189ND
2021-07-12746409ND
2021-07-19745879ND
2021-10-12765318ND
2022-01-10780922ND
2022-04-18793736ND
2022-07-11812679ND
2022-10-10830056ND
2023-01-10841318ND
2023-01-10841913ND
2023-04-10858504ND
2023-07-10874267ND
2023-10-10891306ND