1,2-Dibromo-3-chloropropane (DBCP)
Tully Mobile Estates
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.0826 ppb | 35 | 12 | ND - 0.290 ppb |
| 2019 | 0.0961 ppb | 36 | 15 | ND - 0.280 ppb |
| 2020 | 0.0728 ppb | 36 | 12 | ND - 0.250 ppb |
| 2021 | 0.0667 ppb | 36 | 12 | ND - 0.220 ppb |
| 2022 | 0.0628 ppb | 36 | 12 | ND - 0.240 ppb |
| 2023 | 0.0193 ppb | 28 | 3 | ND - 0.200 ppb |
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 |
|---|---|---|
| 2018-01-17 | CA5000067_004_004-201801171441 | ND |
| 2018-01-17 | CA5000067_DST_005-201801171434 | ND |
| 2018-02-20 | CA5000067_004_004-201802201313 | ND |
| 2018-02-20 | CA5000067_001_001-201802201320 | 0.230 ppb |
| 2018-02-20 | CA5000067_DST_005-201802201308 | ND |
| 2018-03-13 | CA5000067_DST_005-201803131224 | ND |
| 2018-03-13 | CA5000067_004_004-201803131215 | ND |
| 2018-03-13 | CA5000067_001_001-201803131221 | 0.260 ppb |
| 2018-04-09 | CA5000067_004_004-201804090830 | ND |
| 2018-04-09 | CA5000067_001_001-201804090838 | 0.290 ppb |
| 2018-04-09 | CA5000067_DST_005-201804090842 | ND |
| 2018-05-22 | CA5000067_004_004-201805220850 | ND |
| 2018-05-22 | CA5000067_001_001-201805220856 | 0.260 ppb |
| 2018-05-22 | CA5000067_DST_005-201805220912 | ND |
| 2018-06-27 | CA5000067_001_001-201806270920 | 0.240 ppb |
| 2018-06-27 | CA5000067_004_004-201806270914 | ND |
| 2018-06-27 | CA5000067_DST_005-201806270905 | ND |
| 2018-07-18 | CA5000067_004_004-201807180941 | ND |
| 2018-07-18 | CA5000067_001_001-201807180939 | 0.270 ppb |
| 2018-07-18 | CA5000067_DST_005-201807180937 | ND |
| 2018-08-06 | CA5000067_DST_005-201808061216 | ND |
| 2018-08-06 | CA5000067_004_004-201808061212 | ND |
| 2018-08-06 | CA5000067_001_001-201808061202 | 0.240 ppb |
| 2018-09-28 | CA5000067_001_001-201809280900 | 0.210 ppb |
| 2018-09-28 | CA5000067_004_004-201809280848 | 0.140 ppb |
| 2018-09-28 | CA5000067_DST_005-201809280853 | ND |
| 2018-10-24 | CA5000067_DST_005-201810241020 | ND |
| 2018-10-24 | CA5000067_001_001-201810241029 | 0.210 ppb |
| 2018-10-24 | CA5000067_004_004-201810241033 | ND |
| 2018-11-20 | CA5000067_004_004-201811201017 | ND |
| 2018-11-20 | CA5000067_DST_005-201811201018 | ND |
| 2018-11-20 | CA5000067_001_001-201811201016 | 0.270 ppb |
| 2018-12-13 | CA5000067_004_004-201812131201 | ND |
| 2018-12-13 | CA5000067_DST_005-201812131200 | ND |
| 2018-12-13 | CA5000067_001_001-201812131203 | 0.270 ppb |
| 2019-01-16 | CA5000067_DST_005-201901161028 | ND |
| 2019-01-16 | CA5000067_001_001-201901161026 | 0.260 ppb |
| 2019-01-16 | CA5000067_004_004-201901161030 | ND |
| 2019-02-07 | CA5000067_004_004-201902071502 | ND |
| 2019-02-07 | CA5000067_DST_005-201902071503 | ND |
| 2019-02-07 | CA5000067_001_001-201902071501 | 0.270 ppb |
| 2019-03-19 | CA5000067_001_001-201903191101 | 0.280 ppb |
| 2019-03-19 | CA5000067_DST_005-201903191107 | ND |
| 2019-03-19 | CA5000067_004_004-201903191104 | ND |
| 2019-04-17 | CA5000067_DST_005-201904171445 | ND |
| 2019-04-17 | CA5000067_004_004-201904171450 | 0.170 ppb |
| 2019-04-17 | CA5000067_001_001-201904171500 | 0.210 ppb |
| 2019-05-22 | CA5000067_DST_005-201905221425 | ND |
| 2019-05-22 | CA5000067_001_001-201905221420 | 0.220 ppb |
| 2019-05-22 | CA5000067_004_004-201905221415 | ND |
| 2019-06-19 | CA5000067_004_004-201906191440 | 0.190 ppb |
| 2019-06-19 | CA5000067_DST_005-201906191440 | ND |
| 2019-06-19 | CA5000067_001_001-201906191440 | 0.230 ppb |
| 2019-07-16 | CA5000067_004_004-201907161140 | 0.190 ppb |
| 2019-07-16 | CA5000067_001_001-201907161140 | 0.260 ppb |
| 2019-07-16 | CA5000067_DST_005-201907161140 | ND |
| 2019-08-27 | CA5000067_001_001-201908271335 | 0.220 ppb |
| 2019-08-27 | CA5000067_004_004-201908271335 | ND |
| 2019-08-27 | CA5000067_DST_005-201908271335 | ND |
| 2019-09-09 | CA5000067_001_001-201909091035 | 0.250 ppb |
| 2019-09-09 | CA5000067_004_004-201909091035 | ND |
| 2019-09-09 | CA5000067_DST_005-201909091035 | ND |
| 2019-10-23 | CA5000067_004_004-201910231015 | ND |
| 2019-10-23 | CA5000067_001_001-201910231015 | 0.250 ppb |
| 2019-10-23 | CA5000067_DST_005-201910231015 | ND |
| 2019-11-05 | CA5000067_001_001-201911051020 | 0.230 ppb |
| 2019-11-05 | CA5000067_DST_005-201911051020 | ND |
| 2019-11-05 | CA5000067_004_004-201911051020 | ND |
| 2019-12-04 | CA5000067_004_004-201912041100 | ND |
| 2019-12-04 | CA5000067_001_001-201912041100 | 0.230 ppb |
| 2019-12-04 | CA5000067_DST_005-201912041100 | ND |
| 2020-01-07 | CA5000067_DST_005-202001071105 | ND |
| 2020-01-07 | CA5000067_001_001-202001071105 | 0.220 ppb |
| 2020-01-07 | CA5000067_004_004-202001071105 | ND |
| 2020-02-19 | CA5000067_001_001-202002191030 | 0.190 ppb |
| 2020-02-19 | CA5000067_004_004-202002191030 | ND |
| 2020-02-19 | CA5000067_DST_005-202002191030 | ND |
| 2020-03-11 | CA5000067_004_004-202003111030 | ND |
| 2020-03-11 | CA5000067_DST_005-202003111030 | ND |
| 2020-03-11 | CA5000067_001_001-202003111030 | 0.240 ppb |
| 2020-04-07 | CA5000067_DST_005-202004071045 | ND |
| 2020-04-07 | CA5000067_004_004-202004071045 | ND |
| 2020-04-07 | CA5000067_001_001-202004071045 | 0.230 ppb |
| 2020-05-05 | CA5000067_DST_005-202005051010 | ND |
| 2020-05-05 | CA5000067_004_004-202005051010 | ND |
| 2020-05-05 | CA5000067_001_001-202005051010 | 0.230 ppb |
| 2020-06-02 | CA5000067_DST_005-202006020950 | ND |
| 2020-06-02 | CA5000067_001_001-202006020950 | 0.250 ppb |
| 2020-06-02 | CA5000067_004_004-202006020950 | ND |
| 2020-07-07 | CA5000067_001_001-202007070925 | 0.180 ppb |
| 2020-07-07 | CA5000067_DST_005-202007070925 | ND |
| 2020-07-07 | CA5000067_004_004-202007070925 | ND |
| 2020-08-12 | CA5000067_004_004-202008121030 | ND |
| 2020-08-12 | CA5000067_001_001-202008121025 | 0.240 ppb |
| 2020-08-12 | CA5000067_DST_005-202008121040 | ND |
| 2020-09-16 | CA5000067_001_001-202009161025 | 0.210 ppb |
| 2020-09-16 | CA5000067_004_004-202009161035 | ND |
| 2020-09-16 | CA5000067_DST_005-202009161040 | ND |
| 2020-10-15 | CA5000067_001_001-202010150930 | 0.220 ppb |
| 2020-10-15 | CA5000067_DST_005-202010150930 | ND |
| 2020-10-15 | CA5000067_004_004-202010150930 | ND |
| 2020-11-11 | CA5000067_001_001-202011111050 | 0.200 ppb |
| 2020-11-11 | CA5000067_DST_005-202011111050 | ND |
| 2020-11-11 | CA5000067_004_004-202011111050 | ND |
| 2020-12-07 | CA5000067_004_004-202012071115 | ND |
| 2020-12-07 | CA5000067_001_001-202012071110 | 0.210 ppb |
| 2020-12-07 | CA5000067_DST_005-202012071120 | ND |
| 2021-01-20 | CA5000067_001_001-202101201020 | 0.200 ppb |
| 2021-01-20 | CA5000067_004_004-202101201020 | ND |
| 2021-01-20 | CA5000067_DST_005-202101201020 | ND |
| 2021-02-10 | CA5000067_004_004-202102101115 | ND |
| 2021-02-10 | CA5000067_DST_005-202102101120 | ND |
| 2021-02-10 | CA5000067_001_001-202102101110 | 0.210 ppb |
| 2021-03-10 | CA5000067_001_001-202103101135 | 0.200 ppb |
| 2021-03-10 | CA5000067_DST_005-202103101135 | ND |
| 2021-03-10 | CA5000067_004_004-202103101135 | ND |
| 2021-04-27 | CA5000067_DST_005-202104271340 | ND |
| 2021-04-27 | CA5000067_001_001-202104271320 | 0.180 ppb |
| 2021-04-27 | CA5000067_004_004-202104271330 | ND |
| 2021-05-19 | CA5000067_001_001-202105191225 | 0.190 ppb |
| 2021-05-19 | CA5000067_DST_005-202105191225 | ND |
| 2021-05-19 | CA5000067_004_004-202105191225 | ND |
| 2021-06-22 | CA5000067_001_001-202106220935 | 0.200 ppb |
| 2021-06-22 | CA5000067_004_004-202106220945 | ND |
| 2021-06-22 | CA5000067_DST_005-202106221000 | ND |
| 2021-07-19 | CA5000067_001_001-202107190940 | 0.220 ppb |
| 2021-07-19 | CA5000067_004_004-202107190945 | ND |
| 2021-07-19 | CA5000067_DST_005-202107190950 | ND |
| 2021-08-17 | CA5000067_004_004-202108171055 | ND |
| 2021-08-17 | CA5000067_001_001-202108171050 | 0.200 ppb |
| 2021-08-17 | CA5000067_DST_005-202108171105 | ND |
| 2021-09-13 | CA5000067_001_001-202109130920 | 0.220 ppb |
| 2021-09-13 | CA5000067_004_004-202109130930 | ND |
| 2021-09-13 | CA5000067_DST_005-202109130940 | ND |
| 2021-10-26 | CA5000067_004_004-202110261015 | ND |
| 2021-10-26 | CA5000067_001_001-202110261010 | 0.180 ppb |
| 2021-10-26 | CA5000067_DST_005-202110261025 | ND |
| 2021-11-09 | CA5000067_004_004-202111091000 | ND |
| 2021-11-09 | CA5000067_DST_005-202111091010 | ND |
| 2021-11-09 | CA5000067_001_001-202111090950 | 0.210 ppb |
| 2021-12-22 | CA5000067_001_001-202112221218 | 0.190 ppb |
| 2021-12-22 | CA5000067_004_004-202112221223 | ND |
| 2021-12-22 | CA5000067_DST_005-202112221230 | ND |
| 2022-01-25 | CA5000067_004_004-202201250930 | ND |
| 2022-01-25 | CA5000067_001_001-202201250920 | 0.200 ppb |
| 2022-01-25 | CA5000067_DST_005-202201250935 | ND |
| 2022-02-15 | CA5000067_DST_005-202202151025 | ND |
| 2022-02-15 | CA5000067_001_001-202202150955 | 0.190 ppb |
| 2022-02-15 | CA5000067_004_004-202202151010 | ND |
| 2022-03-23 | CA5000067_001_001-202203231120 | 0.220 ppb |
| 2022-03-23 | CA5000067_004_004-202203231125 | ND |
| 2022-03-23 | CA5000067_DST_005-202203231130 | ND |
| 2022-04-19 | CA5000067_DST_005-202204190940 | ND |
| 2022-04-19 | CA5000067_001_001-202204190920 | 0.150 ppb |
| 2022-04-19 | CA5000067_004_004-202204190930 | ND |
| 2022-05-17 | CA5000067_001_001-202205171000 | 0.200 ppb |
| 2022-05-17 | CA5000067_004_004-202205171010 | ND |
| 2022-05-17 | CA5000067_DST_005-202205171020 | ND |
| 2022-06-13 | CA5000067_004_004-202206130950 | ND |
| 2022-06-13 | CA5000067_DST_005-202206130955 | ND |
| 2022-06-13 | CA5000067_001_001-202206130945 | 0.180 ppb |
| 2022-07-14 | CA5000067_004_004-202207141200 | ND |
| 2022-07-14 | CA5000067_001_001-202207141155 | 0.180 ppb |
| 2022-07-14 | CA5000067_DST_005-202207141210 | ND |
| 2022-08-16 | CA5000067_001_001-202208160930 | 0.240 ppb |
| 2022-08-16 | CA5000067_004_004-202208160940 | ND |
| 2022-08-16 | CA5000067_DST_005-202208160955 | ND |
| 2022-09-19 | CA5000067_001_001-202209191020 | 0.180 ppb |
| 2022-09-19 | CA5000067_DST_005-202209191040 | ND |
| 2022-09-19 | CA5000067_004_004-202209191030 | ND |
| 2022-10-18 | CA5000067_004_004-202210180930 | ND |
| 2022-10-18 | CA5000067_001_001-202210180925 | 0.160 ppb |
| 2022-10-18 | CA5000067_DST_005-202210180935 | ND |
| 2022-11-16 | CA5000067_004_004-202211161345 | ND |
| 2022-11-16 | CA5000067_DST_005-202211161355 | ND |
| 2022-11-16 | CA5000067_001_001-202211161335 | 0.190 ppb |
| 2022-12-21 | CA5000067_004_004-202212211345 | ND |
| 2022-12-21 | CA5000067_DST_005-202212211255 | ND |
| 2022-12-21 | CA5000067_001_001-202212211245 | 0.170 ppb |
| 2023-01-17 | CA5000067_004_004-202301170930 | ND |
| 2023-01-17 | CA5000067_001_001-202301170920 | 0.160 ppb |
| 2023-01-17 | CA5000067_DST_005-202301170945 | ND |
| 2023-02-14 | CA5000067_DST_005-202302141430 | ND |
| 2023-02-14 | CA5000067_004_004-202302141430 | ND |
| 2023-03-15 | CA5000067_004_004-202303151035 | ND |
| 2023-03-15 | CA5000067_DST_005-202303151030 | ND |
| 2023-04-11 | CA5000067_DST_005-202304111410 | ND |
| 2023-04-11 | CA5000067_004_004-202304111345 | ND |
| 2023-05-09 | CA5000067_004_004-202305091000 | ND |
| 2023-05-09 | CA5000067_DST_005-202305091000 | ND |
| 2023-06-20 | CA5000067_DST_005-202306200950 | ND |
| 2023-06-20 | CA5000067_004_004-202306201000 | ND |
| 2023-06-29 | CA5000067_001_001-202306291230 | 0.200 ppb |
| 2023-07-18 | CA5000067_004_004-202307181215 | ND |
| 2023-07-18 | CA5000067_DST_005-202307181220 | ND |
| 2023-08-17 | CA5000067_004_004-202308170940 | ND |
| 2023-08-17 | CA5000067_DST_005-202308170950 | ND |
| 2023-08-31 | CA5000067_001_001-202308311050 | 0.180 ppb |
| 2023-09-14 | CA5000067_004_004-202309140915 | ND |
| 2023-09-14 | CA5000067_DST_005-202309140830 | ND |
| 2023-10-05 | CA5000067_DST_005-202310051400 | ND |
| 2023-10-05 | CA5000067_004_004-202310051415 | ND |
| 2023-11-02 | CA5000067_004_004-202311020955 | ND |
| 2023-11-02 | CA5000067_DST_005-202311021000 | ND |
| 2023-11-09 | CA5000067_001_001-202311091140 | ND |
| 2023-12-07 | CA5000067_004_004-202312070900 | ND |
| 2023-12-07 | CA5000067_DST_005-202312070840 | ND |