Dibromoacetic acid
Lisbon 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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 1.26 ppb | 16 | 16 | 0.950 ppb - 1.60 ppb |
| 2019 | 1.46 ppb | 16 | 16 | 1.000 ppb - 2.00 ppb |
| 2020 | 0.848 ppb | 8 | 8 | 0.790 ppb - 0.900 ppb |
| 2021 | 0.856 ppb | 8 | 7 | ND - 1.50 ppb |
| 2022 | 1.06 ppb | 8 | 8 | 0.700 ppb - 1.50 ppb |
| 2023 | 0.961 ppb | 8 | 8 | 0.660 ppb - 1.20 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 |
|---|---|---|
| 2018-01-22 | 35370652002 | 0.950 ppb |
| 2018-01-22 | 35370652001 | 0.960 ppb |
| 2018-01-22 | 35370652002 | 0.950 ppb |
| 2018-01-22 | 35370652001 | 0.960 ppb |
| 2018-04-12 | 35386428001 | 1.60 ppb |
| 2018-04-12 | 35386428002 | 1.60 ppb |
| 2018-04-12 | 35386428002 | 1.60 ppb |
| 2018-04-12 | 35386428001 | 1.60 ppb |
| 2018-07-02 | 35402623001 | 1.30 ppb |
| 2018-07-02 | 35402623002 | 1.30 ppb |
| 2018-07-02 | 35402623002 | 1.30 ppb |
| 2018-07-02 | 35402623001 | 1.30 ppb |
| 2018-10-01 | 35422550001 | 1.20 ppb |
| 2018-10-01 | 35422550002 | 1.20 ppb |
| 2018-10-01 | 35422550002 | 1.20 ppb |
| 2018-10-01 | 35422550001 | 1.20 ppb |
| 2019-01-07 | 35441816002 | 2.00 ppb |
| 2019-01-07 | 35441816001 | 1.70 ppb |
| 2019-01-07 | 35441816002 | 2.00 ppb |
| 2019-01-07 | 35441816001 | 1.70 ppb |
| 2019-04-08 | 35461542002 | 1.50 ppb |
| 2019-04-08 | 35461542002 | 1.50 ppb |
| 2019-04-08 | 35461542001 | 1.40 ppb |
| 2019-04-08 | 35461542001 | 1.40 ppb |
| 2019-07-08 | 35481739002 | 1.50 ppb |
| 2019-07-08 | 35481739001 | 1.30 ppb |
| 2019-07-08 | 35481739001 | 1.30 ppb |
| 2019-07-08 | 35481739002 | 1.50 ppb |
| 2019-10-14 | 35505800001 | 1.000 ppb |
| 2019-10-14 | 35505800001 | 1.000 ppb |
| 2019-10-23 | 35507247001 | 1.30 ppb |
| 2019-10-23 | 35507247001 | 1.30 ppb |
| 2020-01-06 | 35522634002 | 0.830 ppb |
| 2020-01-06 | 35522634001 | 0.790 ppb |
| 2020-04-21 | 35545508001 | 0.870 ppb |
| 2020-04-21 | 35545508002 | 0.870 ppb |
| 2020-07-10 | 35562402001 | 0.860 ppb |
| 2020-07-10 | 35562402002 | 0.820 ppb |
| 2020-10-20 | 35586456001 | 0.840 ppb |
| 2020-10-20 | 35586456002 | 0.900 ppb |
| 2021-01-15 | 35605247001 | 0.830 ppb |
| 2021-01-15 | 35605247002 | 0.850 ppb |
| 2021-04-27 | 35629786001 | ND |
| 2021-04-27 | 35629786002 | 0.960 ppb |
| 2021-07-27 | 35651708001 | 1.50 ppb |
| 2021-07-27 | 35651708002 | 1.20 ppb |
| 2021-10-20 | 35674035001 | 0.780 ppb |
| 2021-10-20 | 35674035002 | 0.730 ppb |
| 2022-01-25 | 35693530002 | 1.30 ppb |
| 2022-01-25 | 35693530001 | 1.20 ppb |
| 2022-04-12 | 35710578002 | 0.860 ppb |
| 2022-04-12 | 35710578001 | 0.800 ppb |
| 2022-07-18 | 35733686001 | 1.30 ppb |
| 2022-07-18 | 35733686002 | 1.50 ppb |
| 2022-10-21 | 35755611001 | 0.830 ppb |
| 2022-10-21 | 35755611002 | 0.700 ppb |
| 2023-01-05 | 35770996001 | 0.870 ppb |
| 2023-01-05 | 35770996002 | 0.990 ppb |
| 2023-04-24 | 35795672002 | 1.20 ppb |
| 2023-04-25 | 35795672001 | 1.10 ppb |
| 2023-07-26 | 35816436001 | 1.20 ppb |
| 2023-08-21 | 35823462001 | 0.930 ppb |
| 2023-10-20 | 35836319001 | 0.660 ppb |
| 2023-10-20 | 35836319002 | 0.740 ppb |