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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Columbia County

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.

MORE ABOUT THIS CONTAMINANT

 

204

Samples

0

Samples exceeding legal limit (MCL)

141

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.16 ppb3426ND - 2.70 ppb
20152.17 ppb34340.760 ppb - 3.00 ppb
20160.452 ppb3414ND - 1.30 ppb
20171.22 ppb3427ND - 1.90 ppb
20181.41 ppb3431ND - 2.30 ppb
20190.326 ppb349ND - 1.80 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
2014-02-04AI27521ND
2014-02-04AI27522ND
2014-02-04AI27523ND
2014-02-04AI27524ND
2014-02-04AI27525ND
2014-02-04AI275261.10 ppb
2014-02-04AI27527ND
2014-02-04AI27528ND
2014-02-17AI279960.840 ppb
2014-02-17AI279970.600 ppb
2014-05-06AI399901.10 ppb
2014-05-06AI399911.10 ppb
2014-05-06AI399921.20 ppb
2014-05-06AI399931.20 ppb
2014-05-06AI399941.30 ppb
2014-05-06AI399951.20 ppb
2014-05-06AI399961.000 ppb
2014-05-06AI39997ND
2014-08-05AI483181.50 ppb
2014-08-05AI483191.60 ppb
2014-08-05AI483201.50 ppb
2014-08-05AI483211.50 ppb
2014-08-05AI483221.50 ppb
2014-08-05AI483231.70 ppb
2014-08-05AI483241.50 ppb
2014-08-05AI483251.20 ppb
2014-11-04AI589722.70 ppb
2014-11-04AI589731.80 ppb
2014-11-04AI589742.20 ppb
2014-11-04AI589752.20 ppb
2014-11-04AI589762.10 ppb
2014-11-04AI589772.30 ppb
2014-11-04AI589781.90 ppb
2014-11-04AI589791.70 ppb
2015-02-03AI640401.90 ppb
2015-02-03AI640411.80 ppb
2015-02-03AI640421.90 ppb
2015-02-03AI640432.50 ppb
2015-02-03AI640442.00 ppb
2015-02-03AI640452.00 ppb
2015-02-03AI640462.00 ppb
2015-02-03AI640471.60 ppb
2015-02-16AI649691.50 ppb
2015-02-16AI649700.760 ppb
2015-05-05AI762781.80 ppb
2015-05-05AI762791.70 ppb
2015-05-05AI762801.70 ppb
2015-05-05AI762812.10 ppb
2015-05-05AI762822.00 ppb
2015-05-05AI762831.90 ppb
2015-05-05AI762841.90 ppb
2015-05-05AI762851.30 ppb
2015-08-04AI853152.70 ppb
2015-08-04AI853162.80 ppb
2015-08-04AI853172.80 ppb
2015-08-04AI853182.50 ppb
2015-08-04AI853192.60 ppb
2015-08-04AI853202.90 ppb
2015-08-04AI853212.60 ppb
2015-08-04AI853221.50 ppb
2015-11-03AJ003572.80 ppb
2015-11-03AJ003582.20 ppb
2015-11-03AJ003592.50 ppb
2015-11-03AJ003602.80 ppb
2015-11-03AJ003613.00 ppb
2015-11-03AJ003623.00 ppb
2015-11-03AJ003632.80 ppb
2015-11-03AJ003642.00 ppb
2016-02-02AJ055241.30 ppb
2016-02-02AJ05525ND
2016-02-02AJ05526ND
2016-02-02AJ055271.30 ppb
2016-02-02AJ05528ND
2016-02-02AJ05529ND
2016-02-02AJ05530ND
2016-02-02AJ05531ND
2016-02-09AJ061380.550 ppb
2016-02-09AJ061390.520 ppb
2016-05-03AJ11588ND
2016-05-03AJ11589ND
2016-05-03AJ11590ND
2016-05-03AJ11591ND
2016-05-03AJ11592ND
2016-05-03AJ11593ND
2016-05-03AJ11594ND
2016-05-03AJ11595ND
2016-08-02AJ207401.20 ppb
2016-08-02AJ20741ND
2016-08-02AJ207421.10 ppb
2016-08-02AJ207431.30 ppb
2016-08-02AJ207441.20 ppb
2016-08-02AJ20745ND
2016-08-02AJ20746ND
2016-08-02AJ20747ND
2016-11-01AJ325641.10 ppb
2016-11-01AJ325651.10 ppb
2016-11-01AJ32566ND
2016-11-01AJ325671.30 ppb
2016-11-01AJ325681.10 ppb
2016-11-01AJ325701.000 ppb
2016-11-01AJ32571ND
2016-11-02AJ325691.30 ppb
2017-02-08AJ46101ND
2017-02-08AJ461021.10 ppb
2017-02-08AJ461031.10 ppb
2017-02-08AJ46104ND
2017-02-08AJ46105ND
2017-02-08AJ461061.20 ppb
2017-02-08AJ46107ND
2017-02-08AJ46108ND
2017-05-02AJ544811.30 ppb
2017-05-02AJ544821.70 ppb
2017-05-02AJ544831.20 ppb
2017-05-02AJ544841.50 ppb
2017-05-02AJ544851.60 ppb
2017-05-02AJ544861.70 ppb
2017-05-02AJ544871.30 ppb
2017-05-02AJ54488ND
2017-06-20AJ580611.20 ppb
2017-06-20AJ58062ND
2017-08-01AJ626271.70 ppb
2017-08-01AJ626281.70 ppb
2017-08-01AJ626291.60 ppb
2017-08-01AJ626301.80 ppb
2017-08-01AJ626311.60 ppb
2017-08-01AJ626321.80 ppb
2017-08-01AJ626331.60 ppb
2017-08-01AJ626341.20 ppb
2017-11-07AJ732881.60 ppb
2017-11-07AJ732891.90 ppb
2017-11-07AJ732901.90 ppb
2017-11-07AJ732911.70 ppb
2017-11-07AJ732921.80 ppb
2017-11-07AJ732931.80 ppb
2017-11-07AJ732941.60 ppb
2017-11-07AJ732951.20 ppb
2018-02-13AJ838001.000 ppb
2018-02-13AJ838010.720 ppb
2018-02-13AJ838101.20 ppb
2018-02-13AJ838111.40 ppb
2018-02-13AJ838121.30 ppb
2018-02-13AJ838131.30 ppb
2018-02-13AJ838141.20 ppb
2018-02-13AJ838151.60 ppb
2018-02-13AJ838161.20 ppb
2018-02-13AJ83817ND
2018-05-08AJ890681.50 ppb
2018-05-08AJ890691.40 ppb
2018-05-08AJ89070ND
2018-05-08AJ890711.50 ppb
2018-05-08AJ890721.30 ppb
2018-05-08AJ890731.30 ppb
2018-05-08AJ890741.40 ppb
2018-05-08AJ89075ND
2018-08-07AJ971511.40 ppb
2018-08-07AJ971521.60 ppb
2018-08-07AJ971531.60 ppb
2018-08-07AJ971542.00 ppb
2018-08-07AJ971551.60 ppb
2018-08-07AJ971561.70 ppb
2018-08-07AJ971572.10 ppb
2018-08-07AJ971581.30 ppb
2018-11-06AK054041.70 ppb
2018-11-06AK054052.20 ppb
2018-11-06AK054062.20 ppb
2018-11-06AK054071.80 ppb
2018-11-06AK054082.30 ppb
2018-11-06AK054092.20 ppb
2018-11-06AK054101.70 ppb
2018-11-06AK054111.20 ppb
2019-02-12AK11283ND
2019-02-12AK11284ND
2019-02-12AK11285ND
2019-02-12AK11286ND
2019-02-12AK11287ND
2019-02-12AK11288ND
2019-02-12AK11289ND
2019-02-12AK11290ND
2019-02-25AK119480.580 ppb
2019-02-25AK119490.500 ppb
2019-05-14AK17437ND
2019-05-14AK17438ND
2019-05-14AK17439ND
2019-05-14AK17440ND
2019-05-14AK17441ND
2019-05-14AK17442ND
2019-05-14AK17443ND
2019-05-14AK17444ND
2019-08-06AK25280ND
2019-08-06AK25281ND
2019-08-06AK25282ND
2019-08-06AK25283ND
2019-08-06AK25284ND
2019-08-06AK25285ND
2019-08-06AK25286ND
2019-08-06AK25287ND
2019-11-05AK360491.20 ppb
2019-11-05AK360501.50 ppb
2019-11-05AK360511.30 ppb
2019-11-05AK360521.30 ppb
2019-11-05AK360531.70 ppb
2019-11-05AK360541.80 ppb
2019-11-05AK360551.20 ppb
2019-11-05AK36056ND