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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Sudbury Water District

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

 

188

Samples

0

Samples exceeding legal limit (MCL)

104

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.30 ppb204ND - 7.10 ppb
20157.09 ppb3219ND - 27.0 ppb
20169.44 ppb3021ND - 28.0 ppb
20176.23 ppb3318ND - 26.0 ppb
20189.11 ppb3822ND - 44.0 ppb
20199.59 ppb3520ND - 33.0 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 Result
2014-01-07ND
2014-01-07ND
2014-01-076.20 ppb
2014-01-07ND
2014-05-06ND
2014-05-06ND
2014-05-066.40 ppb
2014-05-06ND
2014-07-08ND
2014-07-08ND
2014-07-08ND
2014-07-086.30 ppb
2014-07-08ND
2014-07-08ND
2014-07-23ND
2014-07-23ND
2014-10-21ND
2014-10-21ND
2014-10-217.10 ppb
2014-10-21ND
2015-01-06ND
2015-01-06ND
2015-01-067.10 ppb
2015-01-06ND
2015-02-0314.0 ppb
2015-02-0318.0 ppb
2015-02-0327.0 ppb
2015-02-036.70 ppb
2015-04-16ND
2015-04-22ND
2015-04-22ND
2015-04-226.00 ppb
2015-04-22ND
2015-05-058.80 ppb
2015-05-0518.0 ppb
2015-05-0519.0 ppb
2015-05-059.40 ppb
2015-07-07ND
2015-07-07ND
2015-07-07ND
2015-07-0711.0 ppb
2015-07-07ND
2015-07-07ND
2015-08-0425.0 ppb
2015-08-04ND
2015-08-042.10 ppb
2015-08-048.90 ppb
2015-10-069.60 ppb
2015-11-0319.0 ppb
2015-11-035.60 ppb
2015-11-033.20 ppb
2015-11-038.40 ppb
2016-01-056.90 ppb
2016-02-0216.0 ppb
2016-02-0220.0 ppb
2016-02-0219.0 ppb
2016-02-026.90 ppb
2016-03-15ND
2016-03-155.50 ppb
2016-04-06ND
2016-04-065.90 ppb
2016-05-0322.0 ppb
2016-05-0314.0 ppb
2016-05-036.60 ppb
2016-05-0311.0 ppb
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-07-12ND
2016-07-127.40 ppb
2016-07-12ND
2016-07-12ND
2016-08-0228.0 ppb
2016-08-027.30 ppb
2016-08-0220.0 ppb
2016-08-029.50 ppb
2016-10-04ND
2016-10-047.30 ppb
2016-11-0820.0 ppb
2016-11-0820.0 ppb
2016-11-0820.0 ppb
2016-11-0810.00 ppb
2017-01-10ND
2017-01-10ND
2017-01-107.00 ppb
2017-01-10ND
2017-02-0718.0 ppb
2017-02-0718.0 ppb
2017-02-0716.0 ppb
2017-02-0713.0 ppb
2017-04-04ND
2017-04-045.20 ppb
2017-04-04ND
2017-05-0226.0 ppb
2017-05-0216.0 ppb
2017-05-0216.0 ppb
2017-05-02ND
2017-07-11ND
2017-07-11ND
2017-07-11ND
2017-07-117.30 ppb
2017-07-11ND
2017-07-110.540 ppb
2017-08-0813.0 ppb
2017-08-087.90 ppb
2017-08-082.40 ppb
2017-08-085.90 ppb
2017-10-03ND
2017-10-03ND
2017-10-03ND
2017-10-03ND
2017-11-0818.0 ppb
2017-11-08ND
2017-11-081.20 ppb
2017-11-0814.0 ppb
2018-02-06ND
2018-02-066.60 ppb
2018-02-0623.0 ppb
2018-02-068.40 ppb
2018-02-06ND
2018-02-0626.0 ppb
2018-02-0611.0 ppb
2018-04-10ND
2018-04-10ND
2018-04-105.40 ppb
2018-04-10ND
2018-05-0212.0 ppb
2018-05-0219.0 ppb
2018-05-0221.0 ppb
2018-05-0212.0 ppb
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-1011.0 ppb
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-10ND
2018-07-100.630 ppb
2018-08-0818.0 ppb
2018-08-0825.0 ppb
2018-08-0810.00 ppb
2018-08-0817.0 ppb
2018-08-176.60 ppb
2018-10-10ND
2018-10-10ND
2018-10-1013.0 ppb
2018-10-10ND
2018-11-0639.0 ppb
2018-11-0644.0 ppb
2018-11-061.60 ppb
2018-11-0616.0 ppb
2019-01-08ND
2019-01-086.80 ppb
2019-01-08ND
2019-02-0717.0 ppb
2019-02-0725.0 ppb
2019-02-0721.0 ppb
2019-02-0719.0 ppb
2019-04-02ND
2019-04-024.50 ppb
2019-04-02ND
2019-05-0913.0 ppb
2019-05-0917.0 ppb
2019-05-0914.0 ppb
2019-05-0916.0 ppb
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-027.24 ppb
2019-07-02ND
2019-07-02ND
2019-07-02ND
2019-07-16ND
2019-08-0821.0 ppb
2019-08-083.90 ppb
2019-08-083.20 ppb
2019-08-0823.0 ppb
2019-10-08ND
2019-10-08ND
2019-10-087.90 ppb
2019-10-08ND
2019-11-0725.0 ppb
2019-11-0733.0 ppb
2019-11-0732.0 ppb
2019-11-0726.0 ppb