Monobromoacetic acid
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Monobromoacetic 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 |
|---|---|---|---|---|
| 2014 | ND | 1 | 0 | ND |
| 2015 | 0.153 ppb | 8 | 4 | ND - 0.410 ppb |
| 2016 | 0.0213 ppb | 8 | 1 | ND - 0.170 ppb |
| 2017 | 0.163 ppb | 8 | 1 | ND - 1.30 ppb |
| 2018 | 0.0775 ppb | 8 | 1 | ND - 0.620 ppb |
| 2019 | 0.0638 ppb | 8 | 1 | ND - 0.510 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 25 ppb
The EWG Health Guideline of 25 ppb for monobromoacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against muscular degeneration.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-08-14 | 1408795-001A | ND |
| 2015-02-12 | 1502619-001B | ND |
| 2015-02-12 | 1502618-001B | ND |
| 2015-05-26 | 1505B39-001B | ND |
| 2015-05-26 | 1505B38-001B | ND |
| 2015-08-06 | 2015022661 | 0.410 ppb |
| 2015-08-06 | 2015022660 | 0.400 ppb |
| 2015-11-19 | 2015034533 | 0.210 ppb |
| 2015-11-19 | 2015034532 | 0.200 ppb |
| 2016-02-22 | 2016005133 | 0.170 ppb |
| 2016-02-22 | 2016005134 | ND |
| 2016-05-05 | 2016012718 | ND |
| 2016-05-05 | 2016012717 | ND |
| 2016-08-17 | 2016024305 | ND |
| 2016-08-17 | 2016024304 | ND |
| 2016-11-29 | 2016034251 | ND |
| 2016-11-29 | 2016034252 | ND |
| 2017-02-22 | 2017005506 | 1.30 ppb |
| 2017-02-22 | 2017005505 | ND |
| 2017-05-19 | 2017015722 | ND |
| 2017-05-23 | 2017015723 | ND |
| 2017-08-07 | 2017022771 | ND |
| 2017-08-07 | 2017022770 | ND |
| 2017-11-14 | 2017032577 | ND |
| 2017-11-14 | 2017032578 | ND |
| 2018-02-06 | 2018003752 | 0.620 ppb |
| 2018-02-06 | 2018003751 | ND |
| 2018-04-30 | 2018011873 | ND |
| 2018-04-30 | 2018011874 | ND |
| 2018-08-15 | 2018023017 | ND |
| 2018-08-15 | 2018023018 | ND |
| 2018-11-12 | 2018032062 | ND |
| 2018-11-12 | 2018032063 | ND |
| 2019-02-19 | 2019004270 | ND |
| 2019-02-19 | 2019004271 | ND |
| 2019-05-21 | 2019014163 | 0.510 ppb |
| 2019-05-21 | 2019014164 | ND |
| 2019-08-05 | 2019021579 | ND |
| 2019-08-05 | 2019021580 | ND |
| 2019-11-11 | 2019032113 | ND |
| 2019-11-11 | 2019032112 | ND |