Know Your Environment. Protect Your Health.

Bromoform

South Grayson 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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

34

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.57 ppb771.16 ppb - 4.26 ppb
20192.66 ppb65ND - 6.80 ppb
20202.70 ppb64ND - 8.31 ppb
20212.95 ppb65ND - 6.77 ppb
20222.98 ppb97ND - 9.03 ppb
20236.39 ppb662.75 ppb - 15.0 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
2018-02-06Q18049740013.30 ppb
2018-05-04Q18182590042.73 ppb
2018-05-04Q18182590092.02 ppb
2018-10-15Q18408620072.39 ppb
2018-10-15Q18408620091.16 ppb
2018-10-15Q18408620112.16 ppb
2018-10-15Q18408620134.26 ppb
2019-08-13Q19542360163.28 ppb
2019-08-13Q19542360182.53 ppb
2019-08-13Q19542360146.80 ppb
2019-08-13Q19542360121.52 ppb
2019-08-13Q1954236010ND
2019-08-13Q19542360081.85 ppb
2020-08-06Q20311940094.54 ppb
2020-08-06Q2031194011ND
2020-08-06Q20311940138.31 ppb
2020-08-06Q2031194015ND
2020-08-06Q20311940172.05 ppb
2020-08-06Q20311940421.31 ppb
2021-06-16Q21157710082.78 ppb
2021-11-10Q21316310102.52 ppb
2021-11-10Q21316310184.03 ppb
2021-11-10Q21316310166.77 ppb
2021-11-10Q2131631012ND
2021-11-10Q21316310141.61 ppb
2022-02-08Q2204251002ND
2022-04-26Q22124660079.03 ppb
2022-04-26Q22124660095.72 ppb
2022-04-26Q22124660113.66 ppb
2022-04-26Q2212466013ND
2022-04-26Q22124660151.87 ppb
2022-06-15Q22166900022.22 ppb
2022-08-17Q22243600012.19 ppb
2022-10-19Q22318310012.14 ppb
2023-05-16Q23184390072.81 ppb
2023-05-16Q23184390092.75 ppb
2023-05-16Q231843901115.0 ppb
2023-05-16Q23184390137.89 ppb
2023-05-16Q23184390153.63 ppb
2023-05-16Q23184390396.28 ppb