Know Your Environment. Protect Your Health.

Bromoform

Gonzales County Water Supply Corporation

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.

 

72

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.992 ppb129ND - 1.50 ppb
20191.15 ppb106ND - 5.60 ppb
20200.393 ppb154ND - 1.80 ppb
20210.0923 ppb131ND - 1.20 ppb
20220.420 ppb104ND - 1.20 ppb
2023ND120ND

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
2018-02-08AE129811.50 ppb
2018-02-08AE129801.40 ppb
2018-02-08AE13037ND
2018-03-12AE17842ND
2018-03-12AE178821.20 ppb
2018-03-12AE17864ND
2018-05-03AE250121.10 ppb
2018-05-03AE250551.50 ppb
2018-08-16AE373171.30 ppb
2018-08-16AE373181.50 ppb
2018-12-12AE486321.20 ppb
2018-12-12AE486331.20 ppb
2019-01-09AE49237ND
2019-01-09AE49241ND
2019-03-05AE571161.000 ppb
2019-03-05AE571175.60 ppb
2019-04-02AE60853ND
2019-04-02AE608581.20 ppb
2019-07-12AE743521.10 ppb
2019-07-12AE74353ND
2019-10-14AE864371.20 ppb
2019-10-14AE864391.40 ppb
2020-01-21AE94302ND
2020-01-21AE94304ND
2020-01-21AE943311.70 ppb
2020-01-21AE943711.80 ppb
2020-03-10AF02001ND
2020-03-10AF02005ND
2020-04-13AF06460ND
2020-04-13AF06461ND
2020-04-13AF06483ND
2020-08-24AF24854ND
2020-08-24AF248551.000 ppb
2020-08-24AF24889ND
2020-11-13AF348991.40 ppb
2020-11-13AF34874ND
2020-11-13AF34876ND
2021-01-13AF39103ND
2021-01-13AF39104ND
2021-01-13AF39134ND
2021-01-13AF39136ND
2021-01-13AF39142ND
2021-04-01AF48828ND
2021-04-01AF48829ND
2021-04-01AF488481.20 ppb
2021-08-18AF66871ND
2021-08-18AF66912ND
2021-08-18AF66873ND
2021-10-05AF72258ND
2021-10-05AF72260ND
2022-02-09AF83956ND
2022-02-09AF839571.000 ppb
2022-02-09AF840221.000 ppb
2022-04-20AF938701.20 ppb
2022-04-20AF93902ND
2022-04-20AF938711.000 ppb
2022-04-20AF93900ND
2022-09-30AG15663ND
2022-09-30AG15664ND
2022-12-09AG21487ND
2023-03-15AG33167ND
2023-03-15AG33168ND
2023-03-29AG34756ND
2023-06-21AG45238ND
2023-06-21Q2324807003ND
2023-06-21Q2324807001ND
2023-06-21AG45313ND
2023-06-21AG45239ND
2023-09-11AG55537ND
2023-09-11AG55539ND
2023-11-28AG64588ND
2023-11-28AG64590ND