Know Your Environment. Protect Your Health.

Bromoform

Cross Valley Water District

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

 

95

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0238 ppb211ND - 0.500 ppb
20190.0273 ppb221ND - 0.600 ppb
2020N/A00N/A
20210.150 ppb164ND - 0.800 ppb
20220.135 ppb204ND - 0.800 ppb
20230.213 ppb164ND - 1.10 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform is 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, harm to reproduction and child development, and change to fetal growth and development .

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-06-13ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-10-240.500 ppb
2018-10-24ND
2018-10-24ND
2018-10-24ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-07-03ND
2019-07-03ND
2019-07-03ND
2019-07-03ND
2019-09-04ND
2019-09-04ND
2019-09-04ND
2019-10-02ND
2019-10-02ND
2019-10-020.600 ppb
2019-10-02ND
2019-12-17ND
2019-12-17ND
2019-12-17ND
2021-03-1740907020.500 ppb
2021-03-174090649ND
2021-03-174090647ND
2021-03-174090695ND
2021-05-1241141490.600 ppb
2021-05-124114147ND
2021-05-124114145ND
2021-05-124114143ND
2021-07-144145120ND
2021-07-1441451250.500 ppb
2021-07-144145123ND
2021-07-144145118ND
2021-10-1241977600.800 ppb
2021-10-124197764ND
2021-10-124197762ND
2021-10-124197758ND
2022-01-314254478ND
2022-01-314254442ND
2022-01-314254465ND
2022-02-2342474250.700 ppb
2022-04-214284282ND
2022-04-2143331690.500 ppb
2022-04-214284280ND
2022-04-214284284ND
2022-07-224323689ND
2022-07-224323707ND
2022-07-2243236910.800 ppb
2022-07-224323710ND
2022-08-104339525ND
2022-08-104339518ND
2022-08-1043395140.700 ppb
2022-08-104339521ND
2022-12-084389376ND
2022-12-084389384ND
2022-12-084389389ND
2022-12-084389380ND
2023-02-1644229230.600 ppb
2023-02-164422914ND
2023-02-164422917ND
2023-02-164422928ND
2023-04-124439733ND
2023-04-124439737ND
2023-04-1244397350.600 ppb
2023-04-124439762ND
2023-07-2544908111.10 ppb
2023-07-254490813ND
2023-07-254490807ND
2023-07-254490809ND
2023-10-244539812ND
2023-10-244539828ND
2023-10-244539807ND
2023-10-2445398231.10 ppb