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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Horseshoe Bay

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.

MORE ABOUT THIS CONTAMINANT

 

66

Samples

0

Samples exceeding legal limit (MCL)

44

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.82 ppb10101.000 ppb - 4.50 ppb
20151.67 ppb104ND - 5.20 ppb
20160.430 ppb103ND - 1.90 ppb
20171.48 ppb108ND - 2.40 ppb
20181.75 ppb108ND - 2.60 ppb
20191.71 ppb1611ND - 4.30 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
2014-03-04AC454742.20 ppb
2014-03-04AC454722.70 ppb
2014-05-01AC526932.60 ppb
2014-05-01AC526942.70 ppb
2014-08-14AC636753.40 ppb
2014-08-14AC636771.000 ppb
2014-08-14AC637692.60 ppb
2014-08-14AC637702.70 ppb
2014-11-21AC726954.50 ppb
2014-11-21AC726943.80 ppb
2015-01-29AC784263.80 ppb
2015-01-29AC784233.10 ppb
2015-05-06AC907595.20 ppb
2015-05-06AC907604.60 ppb
2015-08-03AD02058ND
2015-08-03AD02089ND
2015-08-03AD02081ND
2015-08-03AD02061ND
2015-10-19AD10966ND
2015-10-19AD10988ND
2016-01-27AD20340ND
2016-01-27AD20343ND
2016-04-14AD33170ND
2016-04-14AD33169ND
2016-07-20AD449271.90 ppb
2016-07-20AD449281.10 ppb
2016-07-20AD450051.30 ppb
2016-07-20AD44977ND
2016-12-05AD60303ND
2016-12-05AD60304ND
2017-02-13AD703761.20 ppb
2017-02-13AD703801.20 ppb
2017-04-19AD80162ND
2017-04-19AD80164ND
2017-07-06AD884781.80 ppb
2017-07-06AD884772.00 ppb
2017-07-06AD885122.00 ppb
2017-07-06AD885042.00 ppb
2017-10-03AD990482.20 ppb
2017-10-03AD990472.40 ppb
2018-01-10AE085822.00 ppb
2018-01-10AE085742.40 ppb
2018-04-18AE229841.70 ppb
2018-04-18AE229831.80 ppb
2018-07-05AE324162.30 ppb
2018-07-05AE324132.60 ppb
2018-07-05AE324462.40 ppb
2018-07-05AE324542.30 ppb
2018-11-28AE47145ND
2018-11-28AE47144ND
2019-01-24AE511861.000 ppb
2019-01-24AE51188ND
2019-04-25AE636871.40 ppb
2019-04-25AE636881.50 ppb
2019-04-25AE636901.30 ppb
2019-04-25AE63692ND
2019-09-04AE819643.90 ppb
2019-09-04AE819634.30 ppb
2019-09-04AE81971ND
2019-09-04AE81969ND
2019-09-04AE82027ND
2019-09-04AE820253.60 ppb
2019-11-21AE901302.00 ppb
2019-11-21AE901314.20 ppb
2019-11-21AE901332.30 ppb
2019-11-21AE901321.80 ppb