Know Your Environment. Protect Your Health.

Bromoform

Warden City Of

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.88 ppb41ND - 7.50 ppb
20193.50 ppb31ND - 10.5 ppb
2020N/A00N/A
20210.633 ppb31ND - 1.90 ppb
20222.60 ppb332.60 ppb
20231.72 ppb52ND - 4.40 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
2018-04-10ND
2018-07-25ND
2018-08-087.50 ppb
2018-10-31ND
2019-04-08ND
2019-06-11ND
2019-08-0510.5 ppb
2021-03-294100649ND
2021-06-024164639ND
2021-08-1241637631.90 ppb
2022-03-0342546242.60 ppb
2022-03-0342546242.60 ppb
2022-03-0342546242.60 ppb
2023-04-114478121ND
2023-09-204524656ND
2023-09-2045247424.22 ppb
2023-09-2045247434.40 ppb
2023-10-244539329ND