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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Ryan Utilities Authority

NOTE: Ryan Utilities Authority purchases water from Waurika Public Works Authority which is required to test for bromoform. Sample information shown below was taken by Waurika Public Works Authority.

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

35

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20128.35 ppb446.60 ppb - 11.2 ppb
201311.8 ppb2211.2 ppb - 12.4 ppb
201418.0 ppb881.50 ppb - 27.8 ppb
20157.70 ppb85ND - 21.1 ppb
20160.413 ppb83ND - 1.10 ppb
20171.39 ppb86ND - 2.20 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

NOTE: Ryan Utilities Authority purchases water from Waurika Public Works Authority which is required to test for bromoform. Sample information shown below was taken by Waurika Public Works Authority.

Date Lab ID Result
2012-02-292B29054-017.56 ppb
2012-05-092E09112-0310.8 ppb
2012-08-292H29082-0110.4 ppb
2012-11-142K14066-0113.4 ppb
2013-11-133K13072-0111.3 ppb
2013-11-133K13072-029.79 ppb
2013-11-133K13072-0313.8 ppb
2014-02-124B12128-0310.5 ppb
2014-02-124B12128-0211.2 ppb
2014-02-124B12128-0110.1 ppb
2014-05-074E07094-0314.4 ppb
2014-05-074E07094-0118.8 ppb
2014-05-074E07094-0218.1 ppb
2014-08-134H13150-0318.9 ppb
2014-08-134H13150-0225.1 ppb
2014-08-134H13150-0124.8 ppb
2014-11-264K26058-0124.1 ppb
2014-11-264K26058-0219.4 ppb
2014-11-264K26058-0321.7 ppb
2015-02-115B11134-0216.8 ppb
2015-02-115B11134-0122.8 ppb
2015-04-085D08140-0116.4 ppb
2015-05-135E13145-0227.4 ppb
2015-05-135E13145-0131.5 ppb
2015-08-265H26125-02ND
2015-08-265H26125-01ND
2015-11-185K18147-02RE1ND
2015-11-185K18147-01ND
2016-02-176B17074-01ND
2016-02-176B17074-02ND
2016-05-116E11166-021.21 ppb
2016-05-116E11166-011.33 ppb
2016-08-106H10171-02ND
2016-08-106H10171-01ND
2016-11-026K02154-011.39 ppb
2016-11-026K02154-021.34 ppb
2017-02-087B08141-02ND
2017-02-087B08141-01ND
2017-04-267E03198-021.33 ppb
2017-04-267E03198-011.32 ppb
2017-07-127G12174-011.42 ppb
2017-08-167H16173-021.97 ppb
2017-08-167H16173-011.95 ppb
2017-11-157K15171-022.17 ppb
2017-11-157K15171-012.18 ppb