Know Your Environment. Protect Your Health.

Bromodichloromethane

Crescent Bay Improvement Company

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.35 ppb41ND - 5.40 ppb
20196.80 ppb43ND - 12.0 ppb
20204.20 ppb43ND - 7.20 ppb
20214.20 ppb42ND - 9.20 ppb
20222.97 ppb41ND - 11.9 ppb
20235.96 ppb42ND - 12.7 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
2018-03-29CA1700519_DST_004-201803291731ND
2018-06-28CA1700519_DST_004-201806280548ND
2018-08-27CA1700519_DST_004-201808270448ND
2018-11-26CA1700519_DST_004-2018112607505.40 ppb
2019-02-27CA1700519_DST_004-2019022708103.20 ppb
2019-05-31CA1700519_DST_004-20190531080012.0 ppb
2019-08-23CA1700519_DST_004-20190823083012.0 ppb
2019-11-25CA1700519_DST_004-201911250700ND
2020-02-20CA1700519_DST_004-202002200615ND
2020-05-19CA1700519_DST_004-2020051906455.80 ppb
2020-08-18CA1700519_DST_004-2020081804307.20 ppb
2020-11-16CA1700519_DST_004-2020111608303.80 ppb
2021-02-16CA1700519_DST_004-2021021607159.20 ppb
2021-05-18CA1700519_DST_004-2021051807007.60 ppb
2021-08-30CA1700519_DST_004-202108300940ND
2021-11-16CA1700519_DST_004-202111160630ND
2022-02-25CA1700519_DST_004-202202250617ND
2022-05-20CA1700519_DST_004-202205200710ND
2022-08-31CA1700519_DST_004-202208310800ND
2022-11-23CA1700519_DST_004-20221123084511.9 ppb
2023-02-28CA1700519_DST_004-202302281030ND
2023-05-30CA1700519_DST_004-202305300930ND
2023-08-16CA1700519_DST_004-20230816081412.7 ppb
2023-12-13CA1700519_DST_004-20231213085711.2 ppb