Know Your Environment. Protect Your Health.

Bromoform

Hanson Water Department

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.

 

62

Samples

0

Samples exceeding legal limit (MCL)

20

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.690 ppb206ND - 3.10 ppb
20190.400 ppb186ND - 1.40 ppb
20200.367 ppb94ND - 1.000 ppb
2021ND90ND
20221.37 ppb32ND - 2.20 ppb
20230.433 ppb32ND - 0.700 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 Result
2018-02-26ND
2018-02-261.50 ppb
2018-02-26ND
2018-02-261.50 ppb
2018-05-152.30 ppb
2018-05-152.30 ppb
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-06-11ND
2018-08-273.10 ppb
2018-08-273.10 ppb
2018-08-27ND
2018-08-27ND
2018-11-26ND
2018-11-26ND
2018-11-26ND
2018-11-26ND
2019-02-111.40 ppb
2019-02-111.40 ppb
2019-02-11ND
2019-02-11ND
2019-06-03ND
2019-06-030.900 ppb
2019-06-030.900 ppb
2019-06-03ND
2019-06-03ND
2019-06-03ND
2019-06-03ND
2019-06-03ND
2019-08-20ND
2019-08-20ND
2019-08-201.30 ppb
2019-08-201.30 ppb
2019-11-18ND
2019-11-18ND
2020-01-29ND
2020-02-180.600 ppb
2020-06-020.800 ppb
2020-06-10ND
2020-06-10ND
2020-06-10ND
2020-08-041.000 ppb
2020-08-040.900 ppb
2020-10-06ND
2021-02-17ND
2021-05-12ND
2021-05-12ND
2021-06-28ND
2021-08-05ND
2021-08-09ND
2021-08-10ND
2021-08-10ND
2021-12-07ND
2022-05-04ND
2022-08-151.90 ppb
2022-08-152.20 ppb
2023-05-30ND
2023-08-080.700 ppb
2023-08-080.600 ppb