Bromochloroacetic acid
City of Great Falls
Bromochloroacetic acid is formed when chlorine or other disinfectants are used to treat drinking water. Bromochloroacetic acid and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 3.78 ppb | 32 | 32 | 2.00 ppb - 5.20 ppb |
2015 | 3.63 ppb | 32 | 32 | 1.30 ppb - 5.00 ppb |
2016 | 3.34 ppb | 32 | 30 | ND - 5.00 ppb |
2017 | 2.80 ppb | 32 | 30 | ND - 4.20 ppb |
2018 | 3.51 ppb | 34 | 33 | ND - 5.60 ppb |
2019 | 3.26 ppb | 43 | 43 | 1.60 ppb - 3.90 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.02 ppb
The EWG Health Guideline of 0.02 ppb for bromochloroacetic acid was defined in a peer-reviewed scientific study by EWG and represents a on-in-a-million lifetime cancer risk level. This health guideline protects against cancer.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-02-18 | B14021350-003B | 3.20 ppb |
2014-02-18 | B14021350-004B | 2.00 ppb |
2014-02-19 | B14021350-001B | 3.20 ppb |
2014-02-19 | B14021350-005B | 3.10 ppb |
2014-02-19 | B14021350-008B | 3.30 ppb |
2014-02-20 | B14021350-002B | 3.50 ppb |
2014-02-20 | B14021350-006B | 3.10 ppb |
2014-02-20 | B14021350-007B | 3.20 ppb |
2014-05-08 | B14050856-001B | 3.60 ppb |
2014-05-08 | B14050856-002B | 3.70 ppb |
2014-05-08 | B14050856-003B | 3.90 ppb |
2014-05-08 | B14050856-004B | 3.80 ppb |
2014-05-27 | B14052535-001B | 3.70 ppb |
2014-05-27 | B14052535-002B | 4.30 ppb |
2014-05-28 | B14052535-004B | 4.00 ppb |
2014-05-29 | B14052535-003B | 4.40 ppb |
2014-08-12 | B14081497-007B | 4.10 ppb |
2014-08-13 | B14081497-003B | 5.00 ppb |
2014-08-13 | B14081497-004B | 2.90 ppb |
2014-08-13 | B14081497-005B | 4.90 ppb |
2014-08-14 | B14081497-001B | 5.20 ppb |
2014-08-14 | B14081497-002B | 5.10 ppb |
2014-08-14 | B14081497-006B | 4.60 ppb |
2014-08-14 | B14081497-008B | 4.90 ppb |
2014-11-24 | B14111959-001B | 3.80 ppb |
2014-11-24 | B14111959-004B | 3.20 ppb |
2014-11-24 | B14111959-005B | 3.90 ppb |
2014-11-24 | B14111959-007B | 2.60 ppb |
2014-11-24 | B14111959-008B | 2.70 ppb |
2014-11-25 | B14111959-002B | 3.90 ppb |
2014-11-25 | B14111959-003B | 4.30 ppb |
2014-11-25 | B14111959-006B | 4.00 ppb |
2015-02-12 | B15021136-001B | 3.10 ppb |
2015-02-12 | B15021136-002B | 1.80 ppb |
2015-02-12 | B15021136-003B | 3.00 ppb |
2015-02-18 | B15021552-001B | 3.40 ppb |
2015-02-18 | B15021552-002B | 3.80 ppb |
2015-02-18 | B15021552-003B | 3.60 ppb |
2015-02-18 | B15021552-005B | 3.70 ppb |
2015-02-19 | B15021552-004B | 3.60 ppb |
2015-05-20 | B15051785-001B | 2.90 ppb |
2015-05-20 | B15051785-002B | 4.50 ppb |
2015-05-20 | B15051785-003B | 3.60 ppb |
2015-05-20 | B15051785-004B | 4.50 ppb |
2015-05-20 | B15051785-005B | 3.90 ppb |
2015-05-20 | B15051785-006B | 3.00 ppb |
2015-05-20 | B15051785-007B | 4.30 ppb |
2015-05-20 | B15051785-008B | 4.20 ppb |
2015-08-18 | B15081763-001B | 4.80 ppb |
2015-08-18 | B15081763-002B | 5.00 ppb |
2015-08-18 | B15081763-003B | 4.40 ppb |
2015-08-18 | B15081763-004B | 3.20 ppb |
2015-08-18 | B15081763-005B | 4.70 ppb |
2015-08-18 | B15081763-006B | 4.80 ppb |
2015-08-18 | B15081763-007B | 4.60 ppb |
2015-08-18 | B15081763-008B | 4.60 ppb |
2015-11-19 | B15111686-001B | 3.40 ppb |
2015-11-19 | B15111686-002B | 3.20 ppb |
2015-11-19 | B15111686-003B | 3.30 ppb |
2015-11-19 | B15111686-004B | 1.30 ppb |
2015-11-19 | B15111686-005B | 3.30 ppb |
2015-11-19 | B15111686-006B | 3.30 ppb |
2015-11-19 | B15111686-007B | 3.10 ppb |
2015-11-19 | B15111686-008B | 2.10 ppb |
2016-02-11 | B16021106-001B | 3.00 ppb |
2016-02-11 | B16021106-002B | 3.70 ppb |
2016-02-11 | B16021106-003B | 3.70 ppb |
2016-02-11 | B16021106-004B | 2.90 ppb |
2016-02-11 | B16021106-005B | 3.70 ppb |
2016-02-11 | B16021106-006B | 3.80 ppb |
2016-02-11 | B16021106-007B | 4.00 ppb |
2016-02-11 | B16021106-008B | 3.90 ppb |
2016-05-11 | B16051040-001B | 3.40 ppb |
2016-05-11 | B16051040-002B | 2.60 ppb |
2016-05-11 | B16051040-003B | 3.40 ppb |
2016-05-11 | B16051040-004B | 3.60 ppb |
2016-05-11 | B16051040-005B | 3.20 ppb |
2016-05-11 | B16051040-006B | 3.30 ppb |
2016-05-11 | B16051040-007B | 3.60 ppb |
2016-05-18 | B16051544-001B | 3.10 ppb |
2016-08-18 | B16081963-001B | 5.00 ppb |
2016-08-18 | B16081963-002B | 4.80 ppb |
2016-08-18 | B16081963-003B | 3.70 ppb |
2016-08-18 | B16081963-004B | ND |
2016-08-18 | B16081963-005B | 4.90 ppb |
2016-08-18 | B16081963-006B | 4.80 ppb |
2016-08-18 | B16081963-007B | 5.00 ppb |
2016-08-23 | B16082339-001B | 4.80 ppb |
2016-11-17 | B16111589-001B | 3.20 ppb |
2016-11-17 | B16111589-002B | 3.20 ppb |
2016-11-17 | B16111589-003B | 3.00 ppb |
2016-11-17 | B16111589-004B | ND |
2016-11-17 | B16111589-005B | 2.70 ppb |
2016-11-17 | B16111589-006B | 2.80 ppb |
2016-11-17 | B16111589-007B | 2.50 ppb |
2016-11-21 | B16111800-001B | 1.50 ppb |
2017-02-14 | B17020956-001B | 2.30 ppb |
2017-02-14 | B17020956-002B | 2.50 ppb |
2017-02-14 | B17020956-003B | 2.50 ppb |
2017-02-14 | B17020956-004B | 2.00 ppb |
2017-02-14 | B17020956-005B | 2.50 ppb |
2017-02-14 | B17020956-006B | 2.40 ppb |
2017-02-14 | B17020956-007B | 2.30 ppb |
2017-02-14 | B17020956-008B | 2.50 ppb |
2017-05-17 | B17051728-001B | 3.40 ppb |
2017-05-17 | B17051728-002B | 3.20 ppb |
2017-05-17 | B17051728-003B | 3.30 ppb |
2017-05-17 | B17051728-004B | 3.40 ppb |
2017-05-17 | B17051728-005B | 3.40 ppb |
2017-05-17 | B17051728-006B | 3.30 ppb |
2017-05-17 | B17051728-007B | 3.60 ppb |
2017-05-18 | B17051830-001B | 4.00 ppb |
2017-08-16 | B17082053-001B | 3.90 ppb |
2017-08-16 | B17082053-002B | ND |
2017-08-16 | B17082053-003B | 3.50 ppb |
2017-08-16 | B17082053-004B | 2.80 ppb |
2017-08-16 | B17082053-005B | 2.90 ppb |
2017-08-16 | B17082053-006B | 2.80 ppb |
2017-08-17 | B17082053-007B | 4.00 ppb |
2017-08-17 | B17082053-008B | 3.60 ppb |
2017-11-16 | B17111476-001B | 3.10 ppb |
2017-11-16 | B17111476-002B | 0.790 ppb |
2017-11-16 | B17111476-003B | 4.20 ppb |
2017-11-16 | B17111476-004B | 3.30 ppb |
2017-11-16 | B17111476-005B | 4.00 ppb |
2017-11-20 | B17111867-001B | 1.40 ppb |
2017-11-20 | B17111867-002B | ND |
2017-11-20 | B17111867-003B | 2.80 ppb |
2018-02-13 | B18021264-001B | 3.30 ppb |
2018-02-13 | B18021264-002B | 3.80 ppb |
2018-02-13 | B18021264-003B | 3.90 ppb |
2018-02-13 | B18021264-004B | 3.90 ppb |
2018-02-13 | B18021264-005B | 4.10 ppb |
2018-02-13 | B18021264-006B | 3.90 ppb |
2018-02-15 | B18021264-007B | 4.00 ppb |
2018-02-15 | B18021264-008B | 3.90 ppb |
2018-05-18 | B18052149-002B | 5.30 ppb |
2018-05-18 | B18052149-007B | 5.00 ppb |
2018-05-18 | B18052149-008B | 4.80 ppb |
2018-05-21 | B18052149-001B | 5.60 ppb |
2018-05-21 | B18052149-003B | 3.90 ppb |
2018-05-21 | B18052149-004B | 5.20 ppb |
2018-05-21 | B18052149-005B | 5.10 ppb |
2018-05-21 | B18052149-006B | 5.30 ppb |
2018-08-15 | B18081851-001B | 4.30 ppb |
2018-08-15 | B18081851-002B | 2.50 ppb |
2018-08-15 | B18081851-003B | 2.80 ppb |
2018-08-15 | B18081851-004B | 3.90 ppb |
2018-08-15 | B18081851-006B | 3.30 ppb |
2018-08-15 | B18081851-007B | 3.50 ppb |
2018-08-15 | B18081851-008B | 4.20 ppb |
2018-08-16 | B18081851-005B | 2.80 ppb |
2018-11-01 | B18110214-001B | 1.40 ppb |
2018-11-01 | B18110214-002B | ND |
2018-11-19 | B18111832-001B | 4.00 ppb |
2018-11-19 | B18111832-003B | 0.620 ppb |
2018-11-19 | B18111832-004B | 0.790 ppb |
2018-11-19 | B18111832-006B | 3.40 ppb |
2018-11-19 | B18111832-008B | 1.30 ppb |
2018-11-20 | B18111832-002B | 3.20 ppb |
2018-11-20 | B18111832-005B | 3.50 ppb |
2018-11-20 | B18111832-007B | 2.80 ppb |
2019-01-30 | B19012302-001B | 3.40 ppb |
2019-02-12 | B19021080-001B | 3.10 ppb |
2019-02-12 | B19021080-002B | 3.20 ppb |
2019-02-12 | B19021080-006B | 3.10 ppb |
2019-02-12 | B19021080-007B | 3.20 ppb |
2019-02-13 | B19021080-003B | 3.20 ppb |
2019-02-13 | B19021080-004B | 1.80 ppb |
2019-02-13 | B19021080-005B | 3.40 ppb |
2019-02-13 | B19021080-008B | 3.00 ppb |
2019-02-13 | B19021081-001B | 2.80 ppb |
2019-03-25 | B19032203-001B | 2.60 ppb |
2019-03-27 | B19032376-001B | 3.10 ppb |
2019-03-28 | B19032376-002B | 3.20 ppb |
2019-03-28 | B19032376-003B | 3.20 ppb |
2019-03-28 | B19032376-004B | 3.20 ppb |
2019-03-28 | B19032376-005B | 3.10 ppb |
2019-03-28 | B19032376-006B | 3.10 ppb |
2019-03-28 | B19032376-007B | 3.10 ppb |
2019-03-28 | B19032376-008B | 3.20 ppb |
2019-05-21 | B19052229-001B | 3.20 ppb |
2019-05-21 | B19052229-004B | 3.80 ppb |
2019-05-21 | B19052229-006B | 3.20 ppb |
2019-05-21 | B19052229-008B | 3.40 ppb |
2019-05-22 | B19052229-002B | 3.50 ppb |
2019-05-22 | B19052229-003B | 2.90 ppb |
2019-05-22 | B19052229-005B | 3.50 ppb |
2019-05-22 | B19052229-007B | 3.40 ppb |
2019-08-21 | B19082305-001B | 3.80 ppb |
2019-08-21 | B19082305-004B | 3.70 ppb |
2019-08-21 | B19082305-005B | 3.80 ppb |
2019-08-21 | B19082305-006B | 3.90 ppb |
2019-08-22 | B19082305-002B | 1.60 ppb |
2019-08-22 | B19082305-003B | 3.60 ppb |
2019-08-22 | B19082305-007B | 3.60 ppb |
2019-08-22 | B19082305-008B | 3.60 ppb |
2019-11-19 | B19112018-001B | 3.90 ppb |
2019-11-19 | B19112018-002B | 3.80 ppb |
2019-11-19 | B19112018-004B | 2.20 ppb |
2019-11-19 | B19112018-006B | 3.90 ppb |
2019-11-19 | B19112018-007B | 3.70 ppb |
2019-11-19 | B19112018-008B | 3.20 ppb |
2019-11-20 | B19112018-003B | 3.30 ppb |
2019-11-20 | B19112018-005B | 3.70 ppb |