Know Your Environment. Protect Your Health.

Bromoform

Sandy Harbor Subdivision

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.40 ppb32ND - 3.70 ppb
20191.23 ppb43ND - 2.20 ppb
20201.33 ppb42ND - 4.00 ppb
20211.40 ppb42ND - 4.40 ppb
2022ND40ND
20231.18 ppb441.000 ppb - 1.30 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
2018-06-11AE292263.70 ppb
2018-08-14AE369043.50 ppb
2018-11-29AE47360ND
2019-02-22AE555221.70 ppb
2019-04-04AE61176ND
2019-08-13AE782651.000 ppb
2019-10-24AE875442.20 ppb
2020-02-10AE975571.30 ppb
2020-04-06AF05615ND
2020-07-15AF19390ND
2020-11-09AF335674.00 ppb
2021-02-01AF418744.40 ppb
2021-06-16AF582281.20 ppb
2021-08-23AF67338ND
2021-11-10AF76424ND
2022-03-02AF87201ND
2022-04-07AF92433ND
2022-08-15AG09106ND
2022-10-21AG17919ND
2023-03-14AG328041.000 ppb
2023-06-13AG441691.10 ppb
2023-09-07AG552641.30 ppb
2023-10-17AG600331.30 ppb