Know Your Environment. Protect Your Health.

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

Terra Bella Irrigation District - Tbt

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND90ND
2020ND80ND
2021ND70ND
2022ND30ND
2023ND60ND

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

Date Lab ID Result
2018-09-24CA5410038_032_032-201809241300ND
2018-09-24CA5410038_027_027-201809241445ND
2018-12-27CA5410038_032_032-201812271200ND
2018-12-27CA5410038_027_027-201812271250ND
2019-02-26CA5410038_032_032-201902261152ND
2019-02-26CA5410038_027_027-201902261318ND
2019-05-10CA5410038_032_032-201905101155ND
2019-05-10CA5410038_027_027-201905101310ND
2019-08-29CA5410038_032_032-201908291208ND
2019-08-29CA5410038_027_027-201908291340ND
2019-08-29CA5410038_025_025-201908291300ND
2019-11-21CA5410038_032_032-201911211158ND
2019-11-21CA5410038_027_027-201911211338ND
2020-08-27CA5410038_001_001-202008271300ND
2020-08-31CA5410038_002_002-202008311202ND
2020-08-31CA5410038_009_009-202008311210ND
2020-08-31CA5410038_020_020-202008311215ND
2020-08-31CA5410038_016_016-202008311150ND
2020-08-31CA5410038_024_024-202008311304ND
2020-11-30CA5410038_024_024-202011301225ND
2020-12-29CA5410038_028_028-202012291250ND
2021-02-19CA5410038_032_032-202102191100ND
2021-02-19CA5410038_027_027-202102191215ND
2021-02-19CA5410038_028_028-202102191125ND
2021-05-27CA5410038_028_028-202105271235ND
2021-09-13CA5410038_009_009-202109131205ND
2021-09-13CA5410038_028_028-202109131325ND
2021-11-15CA5410038_028_028-202111151325ND
2022-03-29CA5410038_028_028-202203291115ND
2022-09-19CA5410038_028_028-202209191305ND
2022-09-19CA5410038_025_025-202209191232ND
2023-07-24CA5410038_001_001-202307241220ND
2023-09-12CA5410038_020_020-202309121147ND
2023-09-12CA5410038_024_024-202309121220ND
2023-09-12CA5410038_016_016-202309121138ND
2023-09-12CA5410038_002_002-202309121152ND
2023-12-04CA5410038_028_028-202312041315ND