Know Your Environment. Protect Your Health.

Bromoform

North Slope Borough - Point Hope

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND30ND
2020ND40ND
20210.590 ppb440.560 ppb - 0.600 ppb
20220.290 ppb42ND - 0.630 ppb
20231.45 ppb53ND - 5.00 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
2018-01-16DT*3855918ND
2018-04-26DT*3923878ND
2018-07-26DT*4009242ND
2018-10-18DT*4099270ND
2019-04-234276134ND
2019-07-234369157ND
2019-10-084450657ND
2020-01-234552448ND
2020-04-164612710ND
2020-07-214681279ND
2020-10-134752321ND
2021-01-2148235040.600 ppb
2021-04-2148873880.600 ppb
2021-07-1549635430.600 ppb
2021-10-21810-6307-10.560 ppb
2022-01-11810-12202-10.530 ppb
2022-04-14810-21636-1T0.630 ppb
2022-07-19810-31563-1ND
2022-10-13810-41936-A-1ND
2023-01-05810-49927-B-1ND
2023-04-20810-61172-A-1ND
2023-07-13810-70639-C-10.940 ppb
2023-07-27810-72452-B-11.30 ppb
2023-10-05810-81238-D-15.00 ppb