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EWG's Tap Water Database — 2021 UPDATE

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Bromodichloromethane

Middletown Water Department

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

 

92

Samples

0

Samples exceeding legal limit (MCL)

78

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.831 ppb87ND - 1.68 ppb
20151.53 ppb1613ND - 9.77 ppb
20161.74 ppb1816ND - 11.2 ppb
20171.12 ppb1615ND - 2.44 ppb
20180.809 ppb1613ND - 1.71 ppb
20190.684 ppb1814ND - 1.57 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
2014-09-22S5888921.11 ppb
2014-09-22S5888911.08 ppb
2014-09-22S5888900.900 ppb
2014-09-22S5888891.68 ppb
2014-12-30S6123080.700 ppb
2014-12-30S6123070.650 ppb
2014-12-30S6123060.530 ppb
2014-12-30S612305ND
2015-03-31S6146700.820 ppb
2015-03-31S614669ND
2015-03-31S614671ND
2015-03-31S614672ND
2015-06-30S6371571.38 ppb
2015-06-30S6371561.59 ppb
2015-06-30S6371551.70 ppb
2015-06-30S6371541.47 ppb
2015-09-30S6372869.77 ppb
2015-09-30S6372851.14 ppb
2015-09-30S6372840.850 ppb
2015-09-30S6372831.53 ppb
2015-12-21S6289710.710 ppb
2015-12-21S6289700.910 ppb
2015-12-21S6289721.31 ppb
2015-12-21S6289731.28 ppb
2016-03-31S6770834.11 ppb
2016-03-31S6770821.46 ppb
2016-03-31S6770810.670 ppb
2016-03-31S6770801.04 ppb
2016-06-29S6792800.740 ppb
2016-06-29S6792790.790 ppb
2016-06-29S6792780.790 ppb
2016-06-29S6792770.940 ppb
2016-09-29S69485111.2 ppb
2016-09-29S6948421.12 ppb
2016-09-29S6948491.31 ppb
2016-09-29S6948501.91 ppb
2016-10-11S719486ND
2016-10-11S719485ND
2016-12-14S7197333.27 ppb
2016-12-14S7197320.720 ppb
2016-12-14S7197310.580 ppb
2016-12-14S7197300.590 ppb
2017-03-30S6844330.860 ppb
2017-03-30S6844340.780 ppb
2017-03-30S7206240.520 ppb
2017-03-30S6844322.10 ppb
2017-06-28S7385902.14 ppb
2017-06-28S7385890.880 ppb
2017-06-28S7385881.02 ppb
2017-06-28S7385871.40 ppb
2017-09-27S760223ND
2017-09-27S7602212.44 ppb
2017-09-27S7602180.870 ppb
2017-09-27S7602171.84 ppb
2017-12-19S7820820.820 ppb
2017-12-19S7820800.570 ppb
2017-12-19S7820841.000 ppb
2017-12-19S7820860.710 ppb
2018-03-26S7921351.31 ppb
2018-03-26S792133ND
2018-03-26S7921310.600 ppb
2018-03-26S7921290.860 ppb
2018-06-26S8084541.22 ppb
2018-06-26S8084520.570 ppb
2018-06-26S8084501.10 ppb
2018-06-26S8084481.11 ppb
2018-09-26S8086480.920 ppb
2018-09-26S8086461.71 ppb
2018-09-26S8244241.13 ppb
2018-09-26S824426ND
2018-12-17S8548350.600 ppb
2018-12-17S854833ND
2018-12-17S8548311.32 ppb
2018-12-17S8548290.500 ppb
2019-03-28S8706090.680 ppb
2019-03-28S8706070.570 ppb
2019-03-28S8706050.700 ppb
2019-03-28S8706030.600 ppb
2019-06-27S8931630.820 ppb
2019-06-27S8931570.780 ppb
2019-06-27S8931591.000 ppb
2019-06-27S8931610.740 ppb
2019-09-30S9093031.10 ppb
2019-09-30S9092991.57 ppb
2019-09-30S9092971.35 ppb
2019-09-30S9092551.14 ppb
2019-10-10S920200ND
2019-10-10S920198ND
2019-12-09S9275200.510 ppb
2019-12-09S9275240.750 ppb
2019-12-09S927528ND
2019-12-09S927516ND