Know Your Environment. Protect Your Health.

Bromoform

Chalk Hill Special Utility 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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.83 ppb52ND - 22.8 ppb
20191.78 ppb61ND - 10.7 ppb
20205.03 ppb62ND - 15.5 ppb
20212.48 ppb51ND - 12.4 ppb
20225.04 ppb52ND - 19.2 ppb
20234.86 ppb52ND - 22.6 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
2018-06-20Q182448700722.8 ppb
2018-06-20Q1824487009ND
2018-06-20Q1824487006ND
2018-08-30Q18349440011.33 ppb
2018-08-30Q1834944002ND
2019-01-10Q1901411003ND
2019-04-08Q1914000002ND
2019-04-08Q191400000510.7 ppb
2019-04-08Q1914000006ND
2019-07-25Q1947859001ND
2019-07-25Q1947859002ND
2020-03-23Q201218300315.5 ppb
2020-05-21Q202036900114.7 ppb
2020-09-17Q2037193001ND
2020-09-17Q2037193002ND
2020-12-17Q2050083008ND
2020-12-17Q2050083006ND
2021-09-21Q2125864001ND
2021-09-21Q2125864002ND
2021-11-09Q213135901212.4 ppb
2021-11-09Q2131359014ND
2021-11-09Q2131359016ND
2022-09-15Q2227711001ND
2022-09-15Q22277110025.99 ppb
2022-12-13Q2237298001ND
2022-12-13Q2237298003ND
2022-12-13Q223729800519.2 ppb
2023-03-20Q2310465003ND
2023-05-23Q2319409004ND
2023-05-23Q2319409005ND
2023-05-23Q231940900722.6 ppb
2023-05-23Q23194090171.68 ppb