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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Claywood Park Psd

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

45

Samples

0

Samples exceeding legal limit (MCL)

44

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.02 ppb550.770 ppb - 3.36 ppb
20152.89 ppb880.840 ppb - 5.40 ppb
20162.02 ppb880.570 ppb - 4.45 ppb
20171.26 ppb880.490 ppb - 2.38 ppb
20180.971 ppb880.360 ppb - 1.39 ppb
20191.17 ppb87ND - 2.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane 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
2014-02-11DBP_1402C63-01A0.770 ppb
2014-04-01DBP_1404304-01A1.30 ppb
2014-09-24DBP_1409S51-01A3.36 ppb
2014-11-18S2DBP_1411M14-012.35 ppb
2014-11-18S2DBP_1411M09-012.34 ppb
2015-02-11S2DBP_1502D21-011.20 ppb
2015-02-11S2DBP_1502D16-011.40 ppb
2015-05-05S2THM_1505668-010.840 ppb
2015-05-05S2DBP_1505648-011.000 ppb
2015-08-25S2DBP_1508U96-014.28 ppb
2015-08-25S2DBP_1508V00-014.00 ppb
2015-11-181511M28-01A5.00 ppb
2015-11-181511M24-01A5.40 ppb
2016-02-241602S73-01A1.09 ppb
2016-02-241602S71-01A0.620 ppb
2016-05-2516052863-01A1.64 ppb
2016-05-2516052860-01A0.570 ppb
2016-08-2416083456-01A4.45 ppb
2016-08-2416083454-01A4.23 ppb
2016-11-2216112848-01A1.79 ppb
2016-11-2216112841-01A1.80 ppb
2017-02-1517021915-01A0.830 ppb
2017-02-1517021924-01A0.490 ppb
2017-05-1017051584-01A1.20 ppb
2017-05-1017051580-01A1.10 ppb
2017-08-1517082517-01A2.38 ppb
2017-08-1617082518-01A2.16 ppb
2017-11-2117113084-01A1.02 ppb
2017-11-2117113081-01A0.870 ppb
2018-02-2018022715-01A1.11 ppb
2018-02-2018022706-01A1.000 ppb
2018-05-0218050328-01A0.360 ppb
2018-05-1518052279-01A1.16 ppb
2018-08-0918081875-01A0.880 ppb
2018-08-0918081873-01A0.910 ppb
2018-11-1518112254-01A1.39 ppb
2018-11-1518112251-01A0.960 ppb
2019-02-1219021513-01AND
2019-02-1219021509-01A0.390 ppb
2019-05-0719051124-01A1.02 ppb
2019-05-0719051123-01A1.05 ppb
2019-08-20354929080011.30 ppb
2019-08-27354944520011.40 ppb
2019-11-217392430012.20 ppb
2019-11-217392500012.00 ppb