Know Your Environment. Protect Your Health.

Bromoform

City of Richwood

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.

 

66

Samples

0

Samples exceeding legal limit (MCL)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.391 ppb112ND - 2.80 ppb
20190.227 ppb112ND - 1.30 ppb
20200.436 ppb114ND - 1.30 ppb
20210.864 ppb115ND - 2.30 ppb
20222.55 ppb118ND - 5.80 ppb
20232.20 ppb115ND - 6.70 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
2018-02-07AE12998ND
2018-02-07AE12967ND
2018-02-07AE130211.50 ppb
2018-04-05AE21414ND
2018-04-05AE21468ND
2018-04-05AE21466ND
2018-04-05AE214242.80 ppb
2018-07-12AE33126ND
2018-07-12AE33131ND
2018-10-30AE44868ND
2018-10-30AE44871ND
2019-01-09AE49225ND
2019-01-09AE49239ND
2019-02-12AE54053ND
2019-02-12AE54065ND
2019-02-12AE54138ND
2019-04-01AE606631.30 ppb
2019-04-01AE606641.20 ppb
2019-07-22AE75267ND
2019-07-22AE75273ND
2019-10-29AE87852ND
2019-10-29AE87853ND
2020-01-27AE95308ND
2020-01-27AE95315ND
2020-03-17AF03253ND
2020-03-17AF03269ND
2020-03-17AF03293ND
2020-04-06AF058621.20 ppb
2020-04-06AF058661.10 ppb
2020-07-02AF17967ND
2020-07-02AF17971ND
2020-10-15AF308071.30 ppb
2020-10-15AF308081.20 ppb
2021-01-11AF38493ND
2021-01-11AF38497ND
2021-04-08AF494982.20 ppb
2021-04-08AF494992.00 ppb
2021-04-08AF495642.30 ppb
2021-04-08AF495681.80 ppb
2021-04-08AF49570ND
2021-07-21AF62794ND
2021-07-21AF62796ND
2021-10-14AF73515ND
2021-10-14AF735171.20 ppb
2022-01-18AF804231.40 ppb
2022-01-18AF804241.30 ppb
2022-03-28AF907302.50 ppb
2022-03-28AF90732ND
2022-03-28AF90734ND
2022-05-09AF959161.50 ppb
2022-05-09AF95915ND
2022-09-12AG124365.10 ppb
2022-09-12AG124404.90 ppb
2022-10-13AG169995.50 ppb
2022-10-13AG170005.80 ppb
2023-01-19AG25232ND
2023-01-19AG25236ND
2023-01-19AG25294ND
2023-01-19AG25296ND
2023-01-19AG25306ND
2023-04-03AG350852.70 ppb
2023-04-03AG350862.70 ppb
2023-09-12AG559456.70 ppb
2023-09-12AG559536.70 ppb
2023-10-24AG60820ND
2023-10-24AG608215.40 ppb