Bromoform
Wallington Water Department
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.332 ppb | 16 | 8 | ND - 1.01 ppb |
| 2015 | 0.916 ppb | 16 | 11 | ND - 1.74 ppb |
| 2016 | 0.402 ppb | 16 | 9 | ND - 0.945 ppb |
| 2017 | 0.255 ppb | 16 | 6 | ND - 0.840 ppb |
| 2018 | 0.0319 ppb | 16 | 1 | ND - 0.510 ppb |
| 2019 | ND | 16 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.5 ppb
The EWG Health Guideline of 0.5 ppb for bromoform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-04 | AB46801TH | 0.595 ppb |
| 2014-02-04 | AB46802TH | ND |
| 2014-02-04 | AB46800TH | ND |
| 2014-02-04 | AB46803TH | 1.01 ppb |
| 2014-05-06 | AB50454TH | ND |
| 2014-05-06 | AB50452TH | ND |
| 2014-05-06 | AB50453TH | ND |
| 2014-05-06 | AB50455TH | ND |
| 2014-08-05 | AB54260TH | ND |
| 2014-08-05 | AB54258TH | 0.531 ppb |
| 2014-08-05 | AB54259TH | 0.581 ppb |
| 2014-08-05 | AB54261TH | ND |
| 2014-11-04 | AB57955TH | 0.551 ppb |
| 2014-11-04 | AB57957TH | 0.614 ppb |
| 2014-11-04 | AB57956TH | 0.698 ppb |
| 2014-11-04 | AB57958TH | 0.735 ppb |
| 2015-02-03 | AB61367TH | 1.60 ppb |
| 2015-02-03 | AB61366TH | 1.74 ppb |
| 2015-02-03 | AB61365TH | 1.56 ppb |
| 2015-02-03 | AB61364TH | 1.50 ppb |
| 2015-05-05 | AB65137TH | ND |
| 2015-05-05 | AB65135TH | 0.797 ppb |
| 2015-05-05 | AB65136TH | 0.732 ppb |
| 2015-05-05 | AB65134TH | 0.586 ppb |
| 2015-08-04 | AB69365TH | 1.68 ppb |
| 2015-08-04 | AB69363TH | 1.72 ppb |
| 2015-08-04 | AB69364TH | 1.28 ppb |
| 2015-08-04 | AB69362TH | 1.46 ppb |
| 2015-11-03 | AB73207TH | ND |
| 2015-11-03 | AB73209TH | ND |
| 2015-11-03 | AB73208TH | ND |
| 2015-11-03 | AB73206TH | ND |
| 2016-02-02 | AB76703TH | ND |
| 2016-02-02 | AB76701TH | 0.712 ppb |
| 2016-02-02 | AB76700TH | 0.540 ppb |
| 2016-02-02 | AB76702TH | ND |
| 2016-05-03 | AB80734TH | 0.945 ppb |
| 2016-05-03 | AB80733TH | 0.856 ppb |
| 2016-05-03 | AB80736TH | 0.916 ppb |
| 2016-05-03 | AB80735TH | 0.832 ppb |
| 2016-08-02 | AB84741TH | 0.509 ppb |
| 2016-08-02 | AB84740TH | ND |
| 2016-08-02 | AB84743TH | ND |
| 2016-08-02 | AB84742TH | ND |
| 2016-11-01 | AB88695TH | 0.593 ppb |
| 2016-11-01 | AB88694TH | 0.532 ppb |
| 2016-11-01 | AB88696TH | ND |
| 2016-11-01 | AB88693TH | ND |
| 2017-02-01 | AB92238TH | ND |
| 2017-02-01 | AB92239TH | ND |
| 2017-02-01 | AB92241TH | ND |
| 2017-02-01 | AB92240TH | ND |
| 2017-05-02 | AB95956TH | ND |
| 2017-05-02 | AB95953TH | ND |
| 2017-05-02 | AB95954TH | 0.600 ppb |
| 2017-05-02 | AB95955TH | ND |
| 2017-08-01 | AB99525TH | 0.820 ppb |
| 2017-08-01 | AB99526TH | 0.560 ppb |
| 2017-08-01 | AB99527TH | 0.840 ppb |
| 2017-08-01 | AB99528TH | 0.510 ppb |
| 2017-11-01 | AC03323TH | ND |
| 2017-11-01 | AC03324TH | ND |
| 2017-11-01 | AC03321TH | ND |
| 2017-11-01 | AC03322TH | 0.750 ppb |
| 2018-02-01 | AC06833TH | ND |
| 2018-02-01 | AC06831TH | ND |
| 2018-02-01 | AC06848TH | ND |
| 2018-02-01 | AC06830TH | ND |
| 2018-05-01 | AC10254TH | ND |
| 2018-05-01 | AC10252TH | ND |
| 2018-05-01 | AC10251TH | ND |
| 2018-05-01 | AC10253TH | ND |
| 2018-08-01 | AC14138TH | ND |
| 2018-08-01 | AC14140TH | ND |
| 2018-08-01 | AC14141TH | ND |
| 2018-08-01 | AC14139TH | ND |
| 2018-11-01 | AC18188TH | ND |
| 2018-11-01 | AC18190TH | ND |
| 2018-11-01 | AC18191TH | ND |
| 2018-11-01 | AC18189TH | 0.510 ppb |
| 2019-02-01 | AC21903TH | ND |
| 2019-02-01 | AC21905TH | ND |
| 2019-02-01 | AC21904TH | ND |
| 2019-02-01 | AC21902TH | ND |
| 2019-05-01 | AC25802TH | ND |
| 2019-05-01 | AC25799TH | ND |
| 2019-05-01 | AC25800TH | ND |
| 2019-05-01 | AC25801TH | ND |
| 2019-08-01 | AC29993TH | ND |
| 2019-08-01 | AC29991TH | ND |
| 2019-08-01 | AC29992TH | ND |
| 2019-08-01 | AC29990TH | ND |
| 2019-11-01 | AC34482TH | ND |
| 2019-11-01 | AC34483TH | ND |
| 2019-11-01 | AC34481TH | ND |
| 2019-11-01 | AC34484TH | ND |