Know Your Environment. Protect Your Health.

Dibromoacetic acid

Unalaska Water System

Dibromoacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

12

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
20200.550 ppb21ND - 1.10 ppb
2021ND20ND
2022ND20ND
20230.500 ppb21ND - 1.000 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.03 ppb

The EWG Health Guideline of 0.03 ppb for dibromoacetic acid was defined by 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 and harm to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-09-18DH*4064098ND
2018-11-28DH*4140750ND
2019-09-164429127ND
2019-11-184497871ND
2020-09-1447291411.10 ppb
2020-11-184784728ND
2021-08-164994754ND
2021-10-18810-5965-1ND
2022-07-25810-32235-A-2-BND
2022-12-01810-46951-A-1-AND
2023-08-21810-76088-A-1-BND
2023-11-28DA60399-11.000 ppb