Monobromoacetic acid
Oak Creek Waterworks
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 | 0.0750 ppb | 6 | 1 | ND - 0.450 ppb |
| 2015 | 0.166 ppb | 10 | 3 | ND - 0.810 ppb |
| 2016 | 0.523 ppb | 8 | 4 | ND - 1.60 ppb |
| 2017 | 0.784 ppb | 8 | 8 | 0.440 ppb - 1.40 ppb |
| 2018 | 0.611 ppb | 8 | 8 | 0.330 ppb - 0.890 ppb |
| 2019 | 0.646 ppb | 8 | 8 | 0.320 ppb - 1.20 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 |
|---|---|---|
| 2014-04-08 | 778647 | ND |
| 2014-04-08 | 778648 | ND |
| 2014-07-09 | 801947 | ND |
| 2014-07-09 | 801948 | 0.450 ppb |
| 2014-10-08 | 824266 | ND |
| 2014-10-08 | 824265 | ND |
| 2015-01-13 | 838787 | ND |
| 2015-01-13 | 838722 | ND |
| 2015-01-13 | 838788 | 0.310 ppb |
| 2015-01-13 | 838723 | 0.810 ppb |
| 2015-04-16 | 854986 | ND |
| 2015-04-16 | 854985 | ND |
| 2015-07-06 | 869081 | ND |
| 2015-07-06 | 869082 | ND |
| 2015-10-06 | 887546 | 0.540 ppb |
| 2015-10-06 | 887547 | ND |
| 2016-01-06 | 900472 | ND |
| 2016-01-06 | 900473 | ND |
| 2016-04-05 | 913818 | ND |
| 2016-04-05 | 913817 | ND |
| 2016-07-12 | 932612 | 0.570 ppb |
| 2016-07-12 | 932611 | 0.610 ppb |
| 2016-10-10 | 952380 | 1.40 ppb |
| 2016-10-10 | 952379 | 1.60 ppb |
| 2017-01-11 | 969499 | 1.40 ppb |
| 2017-01-11 | 969500 | 1.000 ppb |
| 2017-04-11 | 982506 | 0.670 ppb |
| 2017-04-11 | 982507 | 0.690 ppb |
| 2017-07-12 | 1003624 | 0.510 ppb |
| 2017-07-12 | 1003623 | 0.570 ppb |
| 2017-10-10 | 1023463 | 0.440 ppb |
| 2017-10-10 | 1023462 | 0.990 ppb |
| 2018-01-10 | 1036681 | 0.330 ppb |
| 2018-01-10 | 1036680 | 0.370 ppb |
| 2018-04-11 | 1049748 | 0.480 ppb |
| 2018-04-11 | 1049749 | 0.890 ppb |
| 2018-07-11 | 1066446 | 0.580 ppb |
| 2018-07-11 | 1066445 | 0.800 ppb |
| 2018-10-09 | 1086089 | 0.580 ppb |
| 2018-10-09 | 1086088 | 0.860 ppb |
| 2019-01-14 | 1101061 | 0.320 ppb |
| 2019-01-14 | 1101060 | 0.350 ppb |
| 2019-04-09 | 1114195 | 0.470 ppb |
| 2019-04-09 | 1114194 | 0.570 ppb |
| 2019-07-10 | 1133496 | 0.570 ppb |
| 2019-07-10 | 1133495 | 0.750 ppb |
| 2019-10-03 | 1153202 | 0.940 ppb |
| 2019-10-03 | 1153203 | 1.20 ppb |