Know Your Environment. Protect Your Health.

Bromoform

Trinity Rural Water Supply Corporation 2

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.49 ppb86ND - 8.05 ppb
20192.42 ppb86ND - 4.41 ppb
20204.30 ppb881.81 ppb - 9.28 ppb
20210.994 ppb84ND - 2.20 ppb
20222.55 ppb87ND - 6.89 ppb
20233.18 ppb86ND - 7.66 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
2018-02-14Q18065440022.19 ppb
2018-02-14Q18065440011.88 ppb
2018-05-15Q18200410021.73 ppb
2018-05-15Q18200410011.45 ppb
2018-08-21Q18333920014.62 ppb
2018-08-21Q18333920028.05 ppb
2018-11-16Q1847082001ND
2018-11-16Q1847082002ND
2019-03-14Q19108490021.86 ppb
2019-03-14Q19108490032.14 ppb
2019-06-27Q1940976002ND
2019-06-27Q1940976003ND
2019-09-17Q19666950024.41 ppb
2019-09-17Q19666950013.90 ppb
2019-12-09Q19792610023.47 ppb
2019-12-09Q19792610033.59 ppb
2020-03-25Q20126760029.28 ppb
2020-03-25Q20126760039.20 ppb
2020-06-18Q20247870021.89 ppb
2020-06-18Q20247870031.93 ppb
2020-09-09Q20361290014.14 ppb
2020-09-09Q20361290024.10 ppb
2020-12-01Q20480150011.81 ppb
2020-12-01Q20480150022.01 ppb
2021-02-11Q2104196002ND
2021-02-11Q2104196003ND
2021-04-14Q21096720022.20 ppb
2021-04-14Q21096720032.11 ppb
2021-07-19Q2118846002ND
2021-07-19Q2118846003ND
2021-12-17Q21359120021.93 ppb
2021-12-17Q21359120031.71 ppb
2022-03-02Q22071960021.73 ppb
2022-03-02Q22071960031.81 ppb
2022-05-04Q22134270021.31 ppb
2022-05-04Q22134270031.31 ppb
2022-08-03Q22222360026.36 ppb
2022-08-03Q22222360036.89 ppb
2022-11-07Q2233512001ND
2022-11-07Q22335120021.000 ppb
2023-02-08Q2304963002ND
2023-02-08Q2304963003ND
2023-06-12Q23221110022.32 ppb
2023-06-12Q23221110032.30 ppb
2023-09-07Q23386140027.58 ppb
2023-09-07Q23386140037.66 ppb
2023-12-12Q23529550022.83 ppb
2023-12-12Q23529550032.73 ppb