Know Your Environment. Protect Your Health.

Bromoform

San Martin County 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND20ND
20230.905 ppb220.710 ppb - 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
2018-06-14CA4300542_DST_900-201806141025ND
2018-06-14CA4300542_DST_901-201806141002ND
2019-06-25CA4300542_DST_901-201906251329ND
2019-06-25CA4300542_DST_900-201906251346ND
2020-06-10CA4300542_DST_901-202006101152ND
2020-06-10CA4300542_DST_900-202006101129ND
2021-06-09CA4300542_DST_901-202106091330ND
2021-06-09CA4300542_DST_900-202106091345ND
2022-06-20CA4300542_DST_901-202206201324ND
2022-06-20CA4300542_DST_900-202206201407ND
2023-06-12CA4300542_DST_901-2023061213101.10 ppb
2023-06-12CA4300542_DST_900-2023061213490.710 ppb