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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

City of Boerne

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.

MORE ABOUT THIS CONTAMINANT

 

138

Samples

0

Samples exceeding legal limit (MCL)

106

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
201416.0 ppb1917ND - 27.9 ppb
201513.5 ppb2721ND - 32.4 ppb
201611.6 ppb2317ND - 25.5 ppb
201712.3 ppb2317ND - 25.2 ppb
201812.4 ppb2317ND - 27.1 ppb
201911.8 ppb2317ND - 23.8 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
2014-02-11AC42222ND
2014-02-11AC4219112.5 ppb
2014-02-11AC4216811.7 ppb
2014-02-11AC4217417.7 ppb
2014-02-11AC4217316.1 ppb
2014-04-03AC49258ND
2014-04-03AC4920816.2 ppb
2014-04-03AC492094.50 ppb
2014-04-03AC4921015.7 ppb
2014-04-03AC4921218.3 ppb
2014-07-14AC5951020.0 ppb
2014-07-14AC5961123.3 ppb
2014-07-14AC5957810.7 ppb
2014-07-14AC5957916.7 ppb
2014-07-14AC5961623.1 ppb
2014-10-14AC6964524.9 ppb
2014-10-14AC6964021.5 ppb
2014-10-14AC6964322.8 ppb
2014-10-14AC6964127.9 ppb
2015-01-29AC78533ND
2015-01-29AC7846514.5 ppb
2015-01-29AC7844413.8 ppb
2015-01-29AC7844315.4 ppb
2015-01-29AC7844917.8 ppb
2015-04-13AC88007ND
2015-04-13AC88003ND
2015-04-13AC8793815.6 ppb
2015-04-13AC8793418.6 ppb
2015-04-13AC8793521.1 ppb
2015-05-11AC9129917.9 ppb
2015-07-23AD00749ND
2015-07-23AD00763ND
2015-07-23AD00779ND
2015-07-23AD0075320.0 ppb
2015-09-11AD0684525.3 ppb
2015-09-11AD068464.30 ppb
2015-09-11AD0684432.4 ppb
2015-09-11AD0684726.4 ppb
2015-11-17AD1377414.6 ppb
2015-11-17AD137774.90 ppb
2015-11-17AD1377030.7 ppb
2015-11-17AD1376915.4 ppb
2015-12-22AD1709119.4 ppb
2015-12-22AD170931.50 ppb
2015-12-22AD1709214.7 ppb
2015-12-22AD1709419.1 ppb
2016-02-17AD23965ND
2016-02-17AD2388621.1 ppb
2016-02-17AD238711.10 ppb
2016-02-17AD2388817.9 ppb
2016-02-17AD2388722.7 ppb
2016-04-20AD33646ND
2016-04-20AD33644ND
2016-04-20AD3357619.1 ppb
2016-04-20AD335632.40 ppb
2016-04-20AD3356222.4 ppb
2016-04-20AD3356620.0 ppb
2016-07-22AD4547415.0 ppb
2016-07-22AD4542618.2 ppb
2016-07-22AD454244.60 ppb
2016-07-22AD4538925.5 ppb
2016-07-22AD4542518.9 ppb
2016-11-02AD56138ND
2016-11-02AD56140ND
2016-11-02AD56150ND
2016-11-02AD5609415.5 ppb
2016-11-02AD560922.60 ppb
2016-11-02AD5609320.0 ppb
2016-11-02AD5609520.5 ppb
2017-01-25AD66830ND
2017-01-25AD66826ND
2017-01-25AD6673215.2 ppb
2017-01-25AD6673117.5 ppb
2017-01-25AD6673020.9 ppb
2017-01-25AD6672916.4 ppb
2017-04-04AD78315ND
2017-04-04AD78327ND
2017-04-04AD78313ND
2017-04-04AD7827019.9 ppb
2017-04-04AD782727.10 ppb
2017-04-04AD7826922.0 ppb
2017-04-04AD7827119.8 ppb
2017-07-17AD89532ND
2017-07-17AD8953413.0 ppb
2017-07-17AD8948219.2 ppb
2017-07-17AD894782.70 ppb
2017-07-17AD8947923.5 ppb
2017-07-17AD8948319.7 ppb
2017-11-20AE0534217.5 ppb
2017-11-20AE053413.40 ppb
2017-11-20AE0533925.2 ppb
2017-11-20AE0534019.7 ppb
2018-01-29AE11034ND
2018-01-29AE10984ND
2018-01-29AE1094815.7 ppb
2018-01-29AE109471.50 ppb
2018-01-29AE1094517.5 ppb
2018-01-29AE1094617.7 ppb
2018-05-01AE24581ND
2018-05-01AE24583ND
2018-05-01AE24587ND
2018-05-01AE24585ND
2018-05-01AE2452218.4 ppb
2018-05-01AE245212.10 ppb
2018-05-01AE2452018.0 ppb
2018-05-01AE2452317.3 ppb
2018-08-14AE3694122.0 ppb
2018-08-14AE3688421.8 ppb
2018-08-14AE3685926.8 ppb
2018-08-14AE3687727.1 ppb
2018-08-14AE3687821.3 ppb
2018-11-28AE4716018.3 ppb
2018-11-28AE471614.20 ppb
2018-11-28AE4715916.9 ppb
2018-11-28AE4715819.0 ppb
2019-03-14AE5840020.8 ppb
2019-03-14AE584021.70 ppb
2019-03-14AE5839819.6 ppb
2019-03-14AE5840120.7 ppb
2019-06-20AE7145321.5 ppb
2019-06-20AE714542.10 ppb
2019-06-20AE7145219.5 ppb
2019-06-20AE7145123.8 ppb
2019-09-17AE8385315.0 ppb
2019-09-17AE8356122.3 ppb
2019-09-17AE835608.90 ppb
2019-09-17AE8355918.4 ppb
2019-09-17AE8355821.2 ppb
2019-10-02AE85514ND
2019-10-02AE85520ND
2019-10-02AE85522ND
2019-10-02AE85526ND
2019-10-02AE85516ND
2019-10-02AE85524ND
2019-12-09AE9185916.6 ppb
2019-12-09AE918525.20 ppb
2019-12-09AE9185317.3 ppb
2019-12-09AE9187117.4 ppb