Know Your Environment. Protect Your Health.

Bromoform

Hilly-greenwood Water System

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20191.35 ppb440.890 ppb - 1.80 ppb
2020ND20ND
20211.89 ppb220.870 ppb - 2.90 ppb
20222.68 ppb220.550 ppb - 4.80 ppb
20232.80 ppb220.790 ppb - 4.80 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
2018-06-1835399876001ND
2018-06-1835399876002ND
2018-06-1835399876001ND
2018-06-1835399876002ND
2019-06-12354755330011.80 ppb
2019-06-12354755330020.890 ppb
2019-06-12354755330011.80 ppb
2019-06-12354755330020.890 ppb
2020-06-0435554848001ND
2020-06-0435554848002ND
2021-06-28356438130012.90 ppb
2021-06-28356438130020.870 ppb
2022-06-02357224290014.80 ppb
2022-06-02357224290020.550 ppb
2023-06-14358067650014.80 ppb
2023-06-14358067650020.790 ppb