Know Your Environment. Protect Your Health.

Bromoform

City of Frost

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.

 

55

Samples

0

Samples exceeding legal limit (MCL)

34

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.82 ppb86ND - 10.5 ppb
20191.39 ppb115ND - 5.26 ppb
20200.462 ppb93ND - 1.52 ppb
20210.569 ppb94ND - 1.42 ppb
20221.90 ppb97ND - 3.56 ppb
20231.47 ppb991.08 ppb - 1.92 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
2018-02-08Q1805370002ND
2018-02-08Q1805370001ND
2018-04-19Q18161140025.62 ppb
2018-04-19Q18161140017.42 ppb
2018-07-17Q18285900073.42 ppb
2018-07-17Q18285900083.62 ppb
2018-10-25Q18427750017.96 ppb
2018-10-25Q184277500210.5 ppb
2019-02-06Q1905804002ND
2019-02-06Q1905804004ND
2019-04-18Q1915789001ND
2019-04-18Q1915789003ND
2019-04-18Q19157890052.32 ppb
2019-07-29Q19486660021.52 ppb
2019-07-29Q1948666005ND
2019-07-29Q1948666001ND
2019-10-22Q19732120015.26 ppb
2019-10-22Q19732120022.47 ppb
2019-10-22Q19732120033.77 ppb
2020-01-23Q20027530011.28 ppb
2020-01-23Q20027530081.36 ppb
2020-01-23Q20027530091.52 ppb
2020-04-09Q2014413001ND
2020-04-09Q2014413002ND
2020-07-21Q2028405001ND
2020-07-21Q2028405002ND
2020-10-23Q2041394002ND
2020-10-23Q2041394001ND
2021-01-20Q2101382001ND
2021-01-20Q2101382002ND
2021-05-18Q21129350011.12 ppb
2021-05-18Q21129350021.40 ppb
2021-09-16Q21254440061.18 ppb
2021-09-16Q21254440071.42 ppb
2021-09-16Q2125444008ND
2021-11-01Q2130518001ND
2021-11-01Q2130518002ND
2022-03-10Q2208296001ND
2022-03-10Q2208296002ND
2022-05-03Q22134430011.72 ppb
2022-05-03Q22134430021.91 ppb
2022-08-23Q22249910022.34 ppb
2022-08-23Q22249910042.23 ppb
2022-08-23Q22249910032.09 ppb
2022-11-15Q22343110023.56 ppb
2022-11-15Q22343110033.25 ppb
2023-03-22Q23108530021.30 ppb
2023-03-22Q23108530081.14 ppb
2023-03-22Q23108530091.08 ppb
2023-05-31Q23203500011.62 ppb
2023-05-31Q23203500021.92 ppb
2023-07-31Q23308390011.48 ppb
2023-07-31Q23308390021.37 ppb
2023-10-04Q23427050011.77 ppb
2023-10-04Q23427050021.57 ppb