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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Clear Lake City Water Authority

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

 

212

Samples

0

Samples exceeding legal limit (MCL)

167

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20145.29 ppb33332.50 ppb - 15.2 ppb
20152.44 ppb3631ND - 16.0 ppb
20160.933 ppb3620ND - 4.50 ppb
20173.89 ppb3735ND - 14.0 ppb
20182.37 ppb3527ND - 26.0 ppb
20190.963 ppb3521ND - 3.80 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
2014-02-26AC447972.50 ppb
2014-02-26AC447283.30 ppb
2014-02-26AC447003.40 ppb
2014-02-26AC447025.90 ppb
2014-02-26AC447043.20 ppb
2014-02-26AC447314.10 ppb
2014-02-26AC447272.80 ppb
2014-02-26AC446982.90 ppb
2014-02-26AC447245.50 ppb
2014-04-22AC513644.60 ppb
2014-04-22AC513834.90 ppb
2014-04-22AC513583.50 ppb
2014-04-22AC513634.50 ppb
2014-04-22AC513624.90 ppb
2014-04-22AC513793.70 ppb
2014-04-22AC513775.50 ppb
2014-04-22AC513805.90 ppb
2014-07-22AC6055515.2 ppb
2014-07-22AC605587.00 ppb
2014-07-22AC605537.20 ppb
2014-07-22AC605697.30 ppb
2014-07-22AC605676.40 ppb
2014-07-22AC605656.20 ppb
2014-07-22AC605754.10 ppb
2014-07-22AC606059.90 ppb
2014-11-12AC718814.80 ppb
2014-11-12AC718874.60 ppb
2014-11-12AC718894.40 ppb
2014-11-12AC718914.10 ppb
2014-11-12AC718765.20 ppb
2014-11-12AC718756.50 ppb
2014-11-12AC718804.80 ppb
2014-11-12AC719125.70 ppb
2015-01-20AC767581.60 ppb
2015-01-20AC7677011.0 ppb
2015-01-20AC767602.10 ppb
2015-01-20AC7676616.0 ppb
2015-01-20AC769022.00 ppb
2015-01-20AC769421.90 ppb
2015-01-20AC768991.70 ppb
2015-01-20AC769052.30 ppb
2015-01-20AC769222.40 ppb
2015-01-20AC769002.00 ppb
2015-01-20AC769012.10 ppb
2015-01-20AC769172.00 ppb
2015-05-08AC912611.10 ppb
2015-05-08AC912801.20 ppb
2015-05-08AC912911.10 ppb
2015-05-08AC912791.20 ppb
2015-05-08AC912541.10 ppb
2015-05-08AC91263ND
2015-05-08AC91260ND
2015-05-08AC912783.60 ppb
2015-08-19AD04659ND
2015-08-19AD046661.80 ppb
2015-08-19AD046651.90 ppb
2015-08-19AD046571.60 ppb
2015-08-19AD04653ND
2015-08-19AD046621.80 ppb
2015-08-19AD04654ND
2015-08-19AD046631.40 ppb
2015-11-06AD129252.90 ppb
2015-11-06AD129412.90 ppb
2015-11-06AD129282.00 ppb
2015-11-06AD129452.80 ppb
2015-11-06AD129265.50 ppb
2015-11-06AD129241.80 ppb
2015-11-06AD129233.30 ppb
2015-11-06AD129271.60 ppb
2016-01-19AD18634ND
2016-01-19AD18636ND
2016-01-19AD18566ND
2016-01-19AD18573ND
2016-01-19AD18564ND
2016-01-19AD18576ND
2016-01-19AD18565ND
2016-01-19AD18568ND
2016-01-19AD18569ND
2016-01-19AD18577ND
2016-05-03AD350281.000 ppb
2016-05-03AD350291.10 ppb
2016-05-03AD350241.20 ppb
2016-05-03AD35026ND
2016-05-03AD350251.000 ppb
2016-05-03AD350321.70 ppb
2016-05-03AD350301.000 ppb
2016-05-03AD350332.50 ppb
2016-06-20AD41193ND
2016-06-20AD41195ND
2016-07-13AD440301.000 ppb
2016-07-13AD440271.20 ppb
2016-07-13AD44029ND
2016-07-13AD440251.10 ppb
2016-07-13AD440214.50 ppb
2016-07-13AD440461.20 ppb
2016-07-13AD44022ND
2016-07-13AD44028ND
2016-12-02AD603122.10 ppb
2016-12-02AD603102.40 ppb
2016-12-02AD603071.20 ppb
2016-12-02AD603082.20 ppb
2016-12-02AD603092.00 ppb
2016-12-02AD603061.30 ppb
2016-12-02AD603112.40 ppb
2016-12-02AD602771.50 ppb
2017-01-19AD657333.30 ppb
2017-01-19AD656863.80 ppb
2017-01-19AD6569711.5 ppb
2017-01-19AD656822.00 ppb
2017-01-19AD656943.50 ppb
2017-01-19AD656849.60 ppb
2017-01-19AD656857.10 ppb
2017-01-19AD656953.40 ppb
2017-01-19AD656914.10 ppb
2017-03-08AD740355.20 ppb
2017-03-08AD740331.90 ppb
2017-03-08AD7403114.0 ppb
2017-04-19AD801565.20 ppb
2017-04-19AD801543.20 ppb
2017-04-19AD801484.90 ppb
2017-04-19AD801527.50 ppb
2017-04-19AD801553.40 ppb
2017-04-21AD806266.60 ppb
2017-04-21AD806276.40 ppb
2017-04-21AD80624ND
2017-07-20AD901023.40 ppb
2017-07-20AD901082.80 ppb
2017-07-20AD901062.50 ppb
2017-07-20AD901053.00 ppb
2017-07-20AD901044.20 ppb
2017-07-20AD901013.10 ppb
2017-07-20AD901093.40 ppb
2017-07-20AD901072.10 ppb
2017-10-25AE02122ND
2017-10-25AE020871.50 ppb
2017-10-25AE020831.80 ppb
2017-10-25AE020861.60 ppb
2017-10-25AE020801.40 ppb
2017-10-25AE020842.20 ppb
2017-10-25AE020811.40 ppb
2017-10-25AE020821.50 ppb
2017-10-25AE020791.60 ppb
2018-02-20AE144671.10 ppb
2018-02-20AE14393ND
2018-02-20AE143923.20 ppb
2018-02-20AE14395ND
2018-02-20AE144041.10 ppb
2018-02-20AE143981.50 ppb
2018-02-20AE14391ND
2018-02-20AE144031.000 ppb
2018-02-20AE14389ND
2018-03-12AE178981.000 ppb
2018-04-24AE2371726.0 ppb
2018-04-24AE23675ND
2018-04-24AE236761.80 ppb
2018-04-24AE236681.10 ppb
2018-04-24AE236741.70 ppb
2018-04-24AE23669ND
2018-04-24AE236731.10 ppb
2018-04-24AE236701.10 ppb
2018-04-24AE236711.10 ppb
2018-08-22AE381045.60 ppb
2018-08-22AE381002.90 ppb
2018-08-22AE381082.40 ppb
2018-08-22AE381051.10 ppb
2018-08-22AE381015.70 ppb
2018-08-22AE381072.50 ppb
2018-08-22AE381066.00 ppb
2018-08-22AE381024.20 ppb
2018-11-06AE453921.50 ppb
2018-11-06AE453961.80 ppb
2018-11-06AE45397ND
2018-11-06AE453901.80 ppb
2018-11-06AE453981.40 ppb
2018-11-06AE45393ND
2018-11-06AE453951.40 ppb
2018-11-06AE453941.80 ppb
2019-02-27AE56261ND
2019-02-27AE56283ND
2019-02-27AE56279ND
2019-02-27AE56224ND
2019-02-27AE562231.10 ppb
2019-02-27AE56218ND
2019-02-27AE562211.10 ppb
2019-02-27AE562171.30 ppb
2019-02-27AE562201.40 ppb
2019-02-27AE56222ND
2019-02-27AE56216ND
2019-04-03AE610061.90 ppb
2019-04-03AE610081.70 ppb
2019-04-03AE610071.40 ppb
2019-04-03AE610051.30 ppb
2019-04-03AE610111.90 ppb
2019-04-03AE610041.40 ppb
2019-04-03AE610031.70 ppb
2019-04-03AE610091.60 ppb
2019-07-17AE747901.20 ppb
2019-07-17AE748441.20 ppb
2019-07-17AE747791.50 ppb
2019-07-17AE748431.000 ppb
2019-07-17AE748183.20 ppb
2019-07-17AE748451.40 ppb
2019-07-17AE747801.20 ppb
2019-07-17AE748231.40 ppb
2019-10-03AE85652ND
2019-10-03AE85648ND
2019-10-03AE85649ND
2019-10-03AE85653ND
2019-10-03AE856463.80 ppb
2019-10-03AE85651ND
2019-10-03AE85650ND
2019-10-03AE85654ND