Know Your Environment. Protect Your Health.

Bromodichloromethane

Comanche Harbor & Port Ocall

Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

36

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.680 ppb63ND - 1.63 ppb
20193.37 ppb65ND - 13.6 ppb
20201.50 ppb63ND - 3.18 ppb
20218.44 ppb65ND - 25.5 ppb
20229.78 ppb63ND - 37.9 ppb
20239.08 ppb661.79 ppb - 36.3 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.06 ppb

The EWG Health Guideline of 0.06 ppb for bromodichloromethane was based on the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-22Q1802344003ND
2018-01-22Q1802344001ND
2018-01-22Q18023440181.45 ppb
2018-05-31Q18216320011.63 ppb
2018-07-23Q18290500011.000 ppb
2018-10-03Q1839558001ND
2019-01-30Q19045790011.15 ppb
2019-04-18Q1915699002ND
2019-04-18Q19156990031.20 ppb
2019-04-18Q19156990081.30 ppb
2019-08-27Q195986000113.6 ppb
2019-11-06Q19760210012.97 ppb
2020-01-28Q2003195001ND
2020-04-27Q2016257001ND
2020-07-30Q2029893001ND
2020-07-30Q20298930032.81 ppb
2020-07-30Q20298930072.99 ppb
2020-10-07Q20393260013.18 ppb
2021-03-08Q21059300011.29 ppb
2021-04-14Q2109651015ND
2021-04-14Q21096510173.48 ppb
2021-04-14Q21096510127.19 ppb
2021-08-09Q212100500113.2 ppb
2021-10-21Q212978500125.5 ppb
2022-02-17Q2205935005ND
2022-02-17Q2205935007ND
2022-02-17Q2205935009ND
2022-04-28Q22127500016.75 ppb
2022-07-18Q222053400137.9 ppb
2022-10-31Q223305300114.0 ppb
2023-01-26Q23037210013.82 ppb
2023-04-12Q23136310011.79 ppb
2023-08-15Q233403300236.3 ppb
2023-08-15Q23340330031.83 ppb
2023-08-15Q23340330058.76 ppb
2023-11-30Q23510530011.99 ppb