Know Your Environment. Protect Your Health.

Bromoform

Swta - Main System

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

50

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.856 ppb1614ND - 1.60 ppb
20190.169 ppb162ND - 1.60 ppb
20200.681 ppb167ND - 2.10 ppb
20210.900 ppb1611ND - 2.40 ppb
20220.600 ppb168ND - 1.60 ppb
20230.700 ppb168ND - 2.10 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
2018-01-098012267-041.000 ppb
2018-01-098012267-031.000 ppb
2018-01-098012267-010.600 ppb
2018-01-098012267-02ND
2018-04-108042614-030.900 ppb
2018-04-108042614-010.900 ppb
2018-04-108042614-040.700 ppb
2018-04-108042614-020.900 ppb
2018-07-108072827-030.600 ppb
2018-07-108072827-040.600 ppb
2018-07-118073005-011.40 ppb
2018-07-118073005-021.000 ppb
2018-10-098102508-021.30 ppb
2018-10-098102508-031.20 ppb
2018-10-098102508-04ND
2018-10-098102508-011.60 ppb
2019-01-089012197-02ND
2019-01-089012197-04ND
2019-01-089012197-03ND
2019-01-089012197-01ND
2019-04-099042571-03ND
2019-04-099042571-02ND
2019-04-099042571-01ND
2019-04-099042571-04ND
2019-07-099072786-01ND
2019-07-099072786-04ND
2019-07-099072786-03ND
2019-07-099072786-021.60 ppb
2019-10-089102250-04ND
2019-10-089102250-03ND
2019-10-089102250-021.10 ppb
2019-10-089102250-01ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-01-07ND
2020-04-14ND
2020-04-14ND
2020-04-14ND
2020-04-14ND
2020-07-141.50 ppb
2020-07-14ND
2020-07-141.30 ppb
2020-07-141.50 ppb
2020-10-131.40 ppb
2020-10-131.40 ppb
2020-10-131.70 ppb
2020-10-132.10 ppb
2021-01-12ND
2021-01-12ND
2021-01-12ND
2021-01-121.10 ppb
2021-04-131.20 ppb
2021-04-131.10 ppb
2021-04-131.000 ppb
2021-04-130.900 ppb
2021-07-131.70 ppb
2021-07-13ND
2021-07-131.20 ppb
2021-07-132.40 ppb
2021-10-121.40 ppb
2021-10-121.30 ppb
2021-10-12ND
2021-10-121.10 ppb
2022-01-11ND
2022-01-11ND
2022-01-11ND
2022-01-11ND
2022-04-12ND
2022-04-12ND
2022-04-12ND
2022-04-12ND
2022-07-121.60 ppb
2022-07-121.000 ppb
2022-07-121.000 ppb
2022-07-120.900 ppb
2022-10-111.10 ppb
2022-10-111.40 ppb
2022-10-111.20 ppb
2022-10-111.40 ppb
2023-01-09ND
2023-01-10ND
2023-01-101.30 ppb
2023-01-10ND
2023-04-11ND
2023-04-111.000 ppb
2023-04-11ND
2023-04-11ND
2023-07-111.50 ppb
2023-07-11ND
2023-07-111.10 ppb
2023-07-112.10 ppb
2023-10-101.60 ppb
2023-10-101.30 ppb
2023-10-10ND
2023-10-101.30 ppb