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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

City of Hewitt

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

 

109

Samples

0

Samples exceeding legal limit (MCL)

92

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201211.5 ppb18182.30 ppb - 40.2 ppb
201310.5 ppb17172.20 ppb - 25.8 ppb
20148.08 ppb17171.40 ppb - 20.1 ppb
20157.56 ppb1916ND - 20.6 ppb
20162.57 ppb1911ND - 10.4 ppb
20171.84 ppb1913ND - 4.70 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform 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
2012-01-12AB776642.30 ppb
2012-01-12AB776536.00 ppb
2012-01-12AB776553.20 ppb
2012-01-12AB776544.00 ppb
2012-01-12AB776563.80 ppb
2012-01-12AB776576.30 ppb
2012-05-30AB9146012.6 ppb
2012-05-30AB914567.50 ppb
2012-05-30AB9145810.7 ppb
2012-05-30AB914646.80 ppb
2012-08-29AB9996612.5 ppb
2012-08-29AB9995312.3 ppb
2012-08-29AB9996515.5 ppb
2012-08-29AB9995516.4 ppb
2012-11-271211A1300115.3 ppb
2012-11-271211A1300214.6 ppb
2012-11-271211A1300316.4 ppb
2012-11-271211A1300440.2 ppb
2013-02-1213023960025.89 ppb
2013-02-1213023960047.30 ppb
2013-02-1213023960058.10 ppb
2013-02-1213023960068.80 ppb
2013-02-12130239600712.2 ppb
2013-05-30Q130171200516.4 ppb
2013-05-30Q130171200622.8 ppb
2013-05-30Q130171200719.8 ppb
2013-05-30Q130171200810.7 ppb
2013-07-25Q13044650074.17 ppb
2013-07-25Q13044650083.92 ppb
2013-07-25Q130446500925.8 ppb
2013-07-25Q13044650108.35 ppb
2013-12-12Q13176580059.62 ppb
2013-12-12Q13176580062.20 ppb
2013-12-12Q13176580072.89 ppb
2013-12-12Q131765800810.3 ppb
2014-01-14AC386654.40 ppb
2014-03-13AC469196.90 ppb
2014-03-13AC469188.20 ppb
2014-03-13AC469408.80 ppb
2014-03-13AC4692120.1 ppb
2014-04-17AC510487.00 ppb
2014-04-17AC510525.60 ppb
2014-04-17AC5104713.4 ppb
2014-04-17AC510463.80 ppb
2014-09-15AC6701611.8 ppb
2014-09-15AC670111.40 ppb
2014-09-15AC670159.00 ppb
2014-09-15AC670207.30 ppb
2014-11-18AC723986.50 ppb
2014-11-18AC723902.40 ppb
2014-11-18AC723946.10 ppb
2014-11-18AC7239614.6 ppb
2015-03-23AC856554.10 ppb
2015-03-23AC856459.40 ppb
2015-03-23AC85649ND
2015-03-23AC8547916.3 ppb
2015-03-23AC85480ND
2015-03-23AC8548110.8 ppb
2015-03-23AC8548320.6 ppb
2015-04-21AC890086.40 ppb
2015-04-21AC89006ND
2015-04-21AC890052.80 ppb
2015-04-21AC8901417.4 ppb
2015-07-15AC996331.80 ppb
2015-07-15AC996341.80 ppb
2015-07-15AC996307.90 ppb
2015-07-15AC9962915.6 ppb
2015-10-28AD119742.80 ppb
2015-10-28AD119782.80 ppb
2015-10-28AD1197513.1 ppb
2015-10-28AD1197710.00 ppb
2016-01-20AD190023.90 ppb
2016-01-20AD19012ND
2016-01-20AD18923ND
2016-01-20AD189226.40 ppb
2016-01-20AD18926ND
2016-01-20AD189247.50 ppb
2016-04-06AD321292.40 ppb
2016-04-06AD32062ND
2016-04-06AD32068ND
2016-04-06AD32064ND
2016-04-06AD3206310.4 ppb
2016-07-13AD440611.50 ppb
2016-07-13AD440691.40 ppb
2016-07-13AD440661.60 ppb
2016-07-13AD4406810.2 ppb
2016-10-12AD531511.10 ppb
2016-10-12AD53138ND
2016-10-12AD53144ND
2016-10-12AD531432.40 ppb
2017-02-06AD69162ND
2017-02-06AD691662.70 ppb
2017-02-06AD69165ND
2017-02-06AD691642.50 ppb
2017-04-03AD78087ND
2017-04-03AD78015ND
2017-04-03AD780183.40 ppb
2017-04-03AD780172.90 ppb
2017-04-03AD780161.60 ppb
2017-07-19AD899212.20 ppb
2017-07-19AD899222.20 ppb
2017-07-19AD899262.30 ppb
2017-07-19AD899282.70 ppb
2017-10-09AD998142.30 ppb
2017-10-09AD99746ND
2017-10-09AD997412.00 ppb
2017-10-09AD99744ND
2017-10-09AD997473.40 ppb
2017-10-31AE032364.70 ppb