Know Your Environment. Protect Your Health.

Bromoform

Horseshoe Bend 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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.67 ppb32ND - 4.55 ppb
20196.85 ppb32ND - 11.6 ppb
202011.1 ppb32ND - 19.2 ppb
202122.4 ppb54ND - 41.8 ppb
202212.6 ppb31ND - 37.7 ppb
20233.65 ppb42ND - 7.79 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
2018-09-24Q18380170093.45 ppb
2018-09-24Q18380170114.55 ppb
2018-09-24Q1838017002ND
2019-09-17Q19658450018.94 ppb
2019-09-17Q1965845003ND
2019-09-17Q196584500911.6 ppb
2020-06-22Q202498600114.0 ppb
2020-06-22Q2024986003ND
2020-06-22Q202498601019.2 ppb
2021-03-31Q2108169007ND
2021-03-31Q210816900539.4 ppb
2021-08-11Q21214330022.13 ppb
2021-08-11Q212143300328.9 ppb
2021-12-27Q213623800141.8 ppb
2022-09-21Q2228264002ND
2022-11-30Q223589400437.7 ppb
2022-11-30Q2235894006ND
2023-06-08Q2321714001ND
2023-06-08Q2321714008ND
2023-06-08Q23217140097.79 ppb
2023-07-31Q23308290016.82 ppb