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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Atascosa Rural WSC

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

 

113

Samples

0

Samples exceeding legal limit (MCL)

85

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.28 ppb1813ND - 6.10 ppb
20151.36 ppb1813ND - 3.30 ppb
20162.02 ppb1814ND - 13.4 ppb
20172.50 ppb2016ND - 10.00 ppb
20181.69 ppb2015ND - 4.00 ppb
20191.24 ppb1914ND - 3.20 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
2014-02-12AC42474ND
2014-02-12AC424551.000 ppb
2014-02-12AC42452ND
2014-02-12AC42465ND
2014-02-12AC42464ND
2014-03-27AC485330.700 ppb
2014-04-16AC508031.30 ppb
2014-04-16AC508061.20 ppb
2014-04-16AC508041.20 ppb
2014-04-16AC508051.30 ppb
2014-07-21AC603641.60 ppb
2014-07-21AC603651.60 ppb
2014-07-21AC60363ND
2014-07-21AC603621.60 ppb
2014-10-15AC697746.10 ppb
2014-10-15AC697822.00 ppb
2014-10-15AC697731.70 ppb
2014-10-15AC697751.80 ppb
2015-02-05AC79472ND
2015-02-05AC79470ND
2015-02-05AC794271.000 ppb
2015-02-05AC794311.40 ppb
2015-02-05AC794591.000 ppb
2015-02-05AC79430ND
2015-06-02AC942811.40 ppb
2015-06-02AC942791.50 ppb
2015-06-02AC94282ND
2015-06-02AC94270ND
2015-08-10AD032001.80 ppb
2015-08-10AD032092.50 ppb
2015-08-10AD032072.30 ppb
2015-08-10AD032061.10 ppb
2015-10-06AD095942.60 ppb
2015-10-06AD095973.30 ppb
2015-10-06AD095772.60 ppb
2015-10-06AD095951.90 ppb
2016-02-16AD23667ND
2016-02-16AD23635ND
2016-02-16AD236051.10 ppb
2016-02-16AD236041.60 ppb
2016-02-16AD236061.20 ppb
2016-02-16AD236021.40 ppb
2016-04-26AD3415213.4 ppb
2016-04-26AD341681.60 ppb
2016-04-26AD341701.80 ppb
2016-04-26AD341711.60 ppb
2016-07-13AD44024ND
2016-07-13AD44023ND
2016-07-13AD440031.90 ppb
2016-07-13AD440081.50 ppb
2016-10-10AD528081.70 ppb
2016-10-10AD528092.60 ppb
2016-10-10AD528112.00 ppb
2016-10-10AD528042.90 ppb
2017-01-12AD64758ND
2017-01-12AD64790ND
2017-01-12AD647241.20 ppb
2017-01-12AD64703ND
2017-01-12AD647001.20 ppb
2017-01-12AD646991.90 ppb
2017-04-06AD787181.20 ppb
2017-04-06AD787192.30 ppb
2017-04-06AD787201.30 ppb
2017-04-06AD787211.20 ppb
2017-07-18AD899441.70 ppb
2017-07-18AD89939ND
2017-07-18AD899401.30 ppb
2017-07-18AD899352.10 ppb
2017-08-09AD925623.80 ppb
2017-10-06AD9975410.00 ppb
2017-10-06AD997512.40 ppb
2017-10-06AD997535.60 ppb
2017-10-06AD997525.80 ppb
2017-10-06AD998266.90 ppb
2018-01-18AE092514.00 ppb
2018-01-18AE092551.80 ppb
2018-01-18AE09253ND
2018-01-18AE092292.30 ppb
2018-01-18AE09221ND
2018-01-18AE092102.50 ppb
2018-01-18AE092152.30 ppb
2018-04-06AE217223.50 ppb
2018-04-06AE216802.30 ppb
2018-04-06AE21679ND
2018-04-06AE216783.10 ppb
2018-04-06AE216773.30 ppb
2018-08-01AE352731.40 ppb
2018-08-01AE35274ND
2018-08-01AE352761.50 ppb
2018-08-01AE352751.40 ppb
2018-10-04AE426771.60 ppb
2018-10-04AE42679ND
2018-10-04AE426761.50 ppb
2018-10-04AE426781.30 ppb
2019-01-11AE495731.70 ppb
2019-01-11AE49571ND
2019-01-11AE495693.20 ppb
2019-03-05AE571111.70 ppb
2019-03-05AE57110ND
2019-03-05AE571081.50 ppb
2019-03-05AE571091.000 ppb
2019-04-04AE611701.10 ppb
2019-04-04AE61171ND
2019-04-04AE611691.30 ppb
2019-04-04AE61172ND
2019-07-10AE741281.50 ppb
2019-07-10AE741331.000 ppb
2019-07-10AE741321.80 ppb
2019-07-10AE741291.20 ppb
2019-10-01AE853302.30 ppb
2019-10-01AE85329ND
2019-10-01AE853272.30 ppb
2019-10-01AE853321.90 ppb