Bromodichloromethane
City of Lancaster
Bromodichloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromodichloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 11.1 ppb | 32 | 32 | 4.20 ppb - 23.3 ppb |
2015 | 11.9 ppb | 34 | 34 | 4.00 ppb - 21.9 ppb |
2016 | 12.6 ppb | 35 | 35 | 4.00 ppb - 28.6 ppb |
2017 | 9.55 ppb | 40 | 40 | 4.10 ppb - 15.5 ppb |
2018 | 7.41 ppb | 41 | 41 | 3.20 ppb - 15.0 ppb |
2019 | 9.06 ppb | 34 | 34 | 2.40 ppb - 21.5 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.06 ppb
The EWG Health Guideline of 0.06 ppb for bromodichloromethane 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 |
---|---|---|
2014-02-10 | 1071524004 | 6.40 ppb |
2014-02-10 | 1071524002 | 4.90 ppb |
2014-02-10 | 1071524003 | 5.10 ppb |
2014-02-10 | 1071524007 | 7.20 ppb |
2014-02-11 | 1071524001 | 6.80 ppb |
2014-02-11 | 1071524006 | 4.20 ppb |
2014-02-11 | 1071524008 | 6.20 ppb |
2014-02-11 | 1071524005 | 4.80 ppb |
2014-05-05 | 2005455004 | 8.30 ppb |
2014-05-05 | 2005455001 | 8.60 ppb |
2014-05-05 | 2005455003 | 7.70 ppb |
2014-05-05 | 2005455007 | 7.70 ppb |
2014-05-06 | 2005455002 | 9.00 ppb |
2014-05-06 | 2005455006 | 7.40 ppb |
2014-05-06 | 2005455008 | 9.20 ppb |
2014-05-06 | 2005455005 | 7.90 ppb |
2014-08-11 | 2023341004 | 18.6 ppb |
2014-08-11 | 2023341001 | 23.1 ppb |
2014-08-11 | 2023341006 | 18.2 ppb |
2014-08-12 | 2023341002 | 23.3 ppb |
2014-08-12 | 2023341008 | 10.7 ppb |
2014-08-12 | 2023341007 | 22.4 ppb |
2014-08-12 | 2023341005 | 22.2 ppb |
2014-08-26 | 2025879001 | 12.1 ppb |
2014-11-10 | 2039825004 | 14.2 ppb |
2014-11-10 | 2039825002 | 16.2 ppb |
2014-11-10 | 2039825003 | 7.40 ppb |
2014-11-11 | 2039825001 | 14.7 ppb |
2014-11-11 | 2039825006 | 9.60 ppb |
2014-11-11 | 2039825008 | 11.8 ppb |
2014-11-11 | 2039825007 | 10.9 ppb |
2014-11-11 | 2039825005 | 8.70 ppb |
2015-02-09 | 12486219 | 6.40 ppb |
2015-02-09 | 12486207 | 4.90 ppb |
2015-02-09 | 12486231 | 5.60 ppb |
2015-02-09 | 12486213 | 4.00 ppb |
2015-02-10 | 12486201 | 6.80 ppb |
2015-02-10 | 12486243 | 5.70 ppb |
2015-02-10 | 12486237 | 6.80 ppb |
2015-02-10 | 12486225 | 4.10 ppb |
2015-05-11 | 12850274 | 11.6 ppb |
2015-05-11 | 12850286 | 9.10 ppb |
2015-05-11 | 12850268 | 11.2 ppb |
2015-05-11 | 12850292 | 10.00 ppb |
2015-05-12 | 12850262 | 10.5 ppb |
2015-05-12 | 12850256 | 11.5 ppb |
2015-05-12 | 12850298 | 15.7 ppb |
2015-05-12 | 12850280 | 9.80 ppb |
2015-08-10 | 13233778 | 21.4 ppb |
2015-08-10 | 13233802 | 19.0 ppb |
2015-08-10 | 13233772 | 14.4 ppb |
2015-08-10 | 13233796 | 20.0 ppb |
2015-08-11 | 13233766 | 19.3 ppb |
2015-08-11 | 13233760 | 21.9 ppb |
2015-08-11 | 13233790 | 16.5 ppb |
2015-08-11 | 13233784 | 16.2 ppb |
2015-09-08 | 13360333 | 21.3 ppb |
2015-11-09 | 13603669 | 13.1 ppb |
2015-11-09 | 13603651 | 11.9 ppb |
2015-11-09 | 13603663 | 7.50 ppb |
2015-11-09 | 13603675 | 11.4 ppb |
2015-11-10 | 13603657 | 11.5 ppb |
2015-11-10 | 13603681 | 10.2 ppb |
2015-11-10 | 13603693 | 10.3 ppb |
2015-11-10 | 13603687 | 12.4 ppb |
2015-12-21 | 13723390 | 12.7 ppb |
2016-02-09 | 13956427 | 5.80 ppb |
2016-02-09 | 13956432 | 5.10 ppb |
2016-02-09 | 13956433 | 4.80 ppb |
2016-02-09 | 13956434 | 4.00 ppb |
2016-02-10 | 13956428 | 5.00 ppb |
2016-02-10 | 13956429 | 5.30 ppb |
2016-02-10 | 13956430 | 4.30 ppb |
2016-02-10 | 13956431 | 5.10 ppb |
2016-05-09 | 14368534 | 10.7 ppb |
2016-05-09 | 14368535 | 7.70 ppb |
2016-05-09 | 14368536 | 9.20 ppb |
2016-05-09 | 14368538 | 7.60 ppb |
2016-05-10 | 14368537 | 7.60 ppb |
2016-05-10 | 14368539 | 8.40 ppb |
2016-05-10 | 14368540 | 8.40 ppb |
2016-05-10 | 14368541 | 7.50 ppb |
2016-06-30 | 14698111 | 12.4 ppb |
2016-06-30 | 14698135 | 11.9 ppb |
2016-08-08 | 14867985 | 25.2 ppb |
2016-08-08 | 14867990 | 14.5 ppb |
2016-08-08 | 14867991 | 23.6 ppb |
2016-08-09 | 14867986 | 21.3 ppb |
2016-08-09 | 14867987 | 24.6 ppb |
2016-08-09 | 14867989 | 18.8 ppb |
2016-08-09 | 14867992 | 21.6 ppb |
2016-08-10 | 14867988 | 21.4 ppb |
2016-08-23 | 14867993 | 28.6 ppb |
2016-11-09 | 15480588 | 16.5 ppb |
2016-11-09 | 15480589 | 15.7 ppb |
2016-11-09 | 15480593 | 14.8 ppb |
2016-11-09 | 15480594 | 11.8 ppb |
2016-11-10 | 15480587 | 17.5 ppb |
2016-11-10 | 15480590 | 12.1 ppb |
2016-11-10 | 15480591 | 13.0 ppb |
2016-11-10 | 15480592 | 10.4 ppb |
2017-02-07 | 15759698 | 4.40 ppb |
2017-02-07 | 15759702 | 5.70 ppb |
2017-02-07 | 15759700 | 5.10 ppb |
2017-02-07 | 15759701 | 5.60 ppb |
2017-02-07 | 15759697 | 4.10 ppb |
2017-02-08 | 15759704 | 7.50 ppb |
2017-02-08 | 15759699 | 4.40 ppb |
2017-02-08 | 15759703 | 6.80 ppb |
2017-03-08 | 15900980 | 6.10 ppb |
2017-03-22 | 15901009 | 6.10 ppb |
2017-05-08 | 16218021 | 8.60 ppb |
2017-05-08 | 16218024 | 9.00 ppb |
2017-05-08 | 16218019 | 7.90 ppb |
2017-05-08 | 16218018 | 7.50 ppb |
2017-05-09 | 16218017 | 7.40 ppb |
2017-05-09 | 16218022 | 8.80 ppb |
2017-05-09 | 16218020 | 8.00 ppb |
2017-05-10 | 16218025 | 10.1 ppb |
2017-05-17 | 16218081 | 7.60 ppb |
2017-08-08 | 16689431 | 11.8 ppb |
2017-08-08 | 16689438 | 15.5 ppb |
2017-08-08 | 16689432 | 12.3 ppb |
2017-08-08 | 16689433 | 12.7 ppb |
2017-08-08 | 16689434 | 12.9 ppb |
2017-08-09 | 16689435 | 13.4 ppb |
2017-08-09 | 16689436 | 14.7 ppb |
2017-08-09 | 16689437 | 15.2 ppb |
2017-11-06 | 17128898 | 10.1 ppb |
2017-11-06 | 17128920 | 11.4 ppb |
2017-11-06 | 17128942 | 12.7 ppb |
2017-11-06 | 17128953 | 11.4 ppb |
2017-11-06 | 17128964 | 8.80 ppb |
2017-11-08 | 17128887 | 14.4 ppb |
2017-11-08 | 17128909 | 11.2 ppb |
2017-11-08 | 17128931 | 13.6 ppb |
2017-12-06 | 17268372 | 11.4 ppb |
2017-12-11 | 17268394 | 11.5 ppb |
2017-12-11 | 17268405 | 7.40 ppb |
2017-12-12 | 17268383 | 9.40 ppb |
2017-12-12 | 17268416 | 9.50 ppb |
2018-02-06 | 8002953-02 | 4.40 ppb |
2018-02-06 | 8002953-05 | 6.80 ppb |
2018-02-06 | 8002953-06 | 5.50 ppb |
2018-02-06 | 8002953-07 | 5.90 ppb |
2018-02-08 | 8002953-01 | 7.80 ppb |
2018-02-08 | 8002953-03 | 6.40 ppb |
2018-02-08 | 8002953-04 | 4.90 ppb |
2018-02-08 | 8002953-08 | 5.60 ppb |
2018-03-13 | 2302431001 | 5.60 ppb |
2018-04-10 | 2308677001 | 6.20 ppb |
2018-05-07 | 2314140001 | 10.00 ppb |
2018-05-07 | 2314140005 | 10.6 ppb |
2018-05-07 | 2314140006 | 9.90 ppb |
2018-05-07 | 2314140007 | 8.10 ppb |
2018-05-07 | 2314140008 | 7.70 ppb |
2018-05-08 | 2314140002 | 7.80 ppb |
2018-05-08 | 2314140003 | 8.60 ppb |
2018-05-08 | 2314140004 | 7.60 ppb |
2018-08-06 | 2331578002 | 7.60 ppb |
2018-08-06 | 2331578003 | 11.0 ppb |
2018-08-06 | 2331578004 | 8.30 ppb |
2018-08-06 | 2331578005 | 10.2 ppb |
2018-08-07 | 2331578006 | 7.50 ppb |
2018-08-07 | 2331578007 | 10.00 ppb |
2018-08-07 | 2331578008 | 9.80 ppb |
2018-08-08 | 2331578001 | 15.0 ppb |
2018-09-25 | 2341035001 | 9.00 ppb |
2018-09-25 | 2341035002 | 7.80 ppb |
2018-11-07 | 2349167001 | 9.60 ppb |
2018-11-07 | 2349167003 | 7.80 ppb |
2018-11-07 | 2349167004 | 7.40 ppb |
2018-11-07 | 2349167005 | 8.20 ppb |
2018-11-08 | 2349167002 | 5.20 ppb |
2018-11-08 | 2349167006 | 8.30 ppb |
2018-11-08 | 2349167007 | 6.80 ppb |
2018-11-08 | 2349167008 | 6.20 ppb |
2018-12-12 | 3006044002 | 4.00 ppb |
2018-12-12 | 3006044003 | 3.40 ppb |
2018-12-12 | 3006044004 | 4.00 ppb |
2018-12-12 | 3006044005 | 3.20 ppb |
2018-12-12 | 3006044006 | 4.30 ppb |
2019-02-06 | 3015556002 | 3.90 ppb |
2019-02-06 | 3015556004 | 3.10 ppb |
2019-02-06 | 3015556005 | 3.10 ppb |
2019-02-06 | 3015556006 | 2.40 ppb |
2019-02-06 | 3015556007 | 3.60 ppb |
2019-02-07 | 3015556001 | 4.40 ppb |
2019-02-07 | 3015556003 | 4.30 ppb |
2019-02-07 | 3015556008 | 3.00 ppb |
2019-05-06 | 3032689001 | 9.10 ppb |
2019-05-06 | 3032689002 | 5.80 ppb |
2019-05-06 | 3032689004 | 6.40 ppb |
2019-05-06 | 3032689005 | 7.70 ppb |
2019-05-07 | 3032689003 | 7.10 ppb |
2019-05-07 | 3032689006 | 9.00 ppb |
2019-05-07 | 3032689007 | 6.40 ppb |
2019-05-07 | 3032689008 | 8.50 ppb |
2019-08-06 | 3050286002 | 16.3 ppb |
2019-08-06 | 3050286003 | 21.5 ppb |
2019-08-06 | 3050286004 | 16.7 ppb |
2019-08-06 | 3050286006 | 12.7 ppb |
2019-08-07 | 3050286001 | 20.1 ppb |
2019-08-07 | 3050286005 | 13.6 ppb |
2019-08-07 | 3050286007 | 18.6 ppb |
2019-08-07 | 3050286008 | 17.6 ppb |
2019-09-17 | 3058859001 | 21.4 ppb |
2019-11-07 | 3068920001 | 11.5 ppb |
2019-11-07 | 3068920002 | 6.90 ppb |
2019-11-07 | 3068920003 | 4.30 ppb |
2019-11-07 | 3068920004 | 8.50 ppb |
2019-11-07 | 3068920005 | 6.10 ppb |
2019-11-08 | 3069998001 | 3.40 ppb |
2019-11-08 | 3069998002 | 9.60 ppb |
2019-11-08 | 3069998003 | 4.70 ppb |
2019-12-18 | 3076613001 | 6.70 ppb |