Know Your Environment. Protect Your Health.

Bromoform

Ayer DPW Water Division

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.

 

69

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND180ND
2019ND220ND
20200.0722 ppb91ND - 0.650 ppb
20210.0710 ppb101ND - 0.710 ppb
2022ND20ND
20230.153 ppb82ND - 0.800 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
2018-06-13ND
2018-06-13ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2018-08-14ND
2019-03-05ND
2019-03-05ND
2019-03-05ND
2019-03-05ND
2019-08-14ND
2019-08-14ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-12-10ND
2019-12-10ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-07ND
2020-07-070.650 ppb
2020-08-05ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-06ND
2021-08-060.710 ppb
2021-10-19ND
2021-12-02ND
2022-01-19ND
2022-04-25ND
2023-05-02ND
2023-07-270.420 ppb
2023-08-07ND
2023-08-07ND
2023-08-07ND
2023-08-07ND
2023-08-07ND
2023-08-220.800 ppb