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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Rowland Water District

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

 

184

Samples

0

Samples exceeding legal limit (MCL)

174

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20144.08 ppb32322.30 ppb - 12.6 ppb
20154.06 ppb32322.20 ppb - 7.40 ppb
20164.49 ppb32322.60 ppb - 13.5 ppb
20172.30 ppb2420ND - 6.50 ppb
20183.03 ppb3227ND - 13.2 ppb
20193.36 ppb3231ND - 6.40 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
2014-03-103761-800-082512.6 ppb
2014-03-103761-801-08405.00 ppb
2014-03-103761-802-09255.40 ppb
2014-03-103761-803-09404.10 ppb
2014-03-103761-804-10002.30 ppb
2014-03-103761-805-08204.50 ppb
2014-03-103761-806-11105.50 ppb
2014-03-103761-807-11104.50 ppb
2014-06-093761-800-08003.70 ppb
2014-06-093761-801-11002.80 ppb
2014-06-093761-802-08503.00 ppb
2014-06-093761-803-09103.90 ppb
2014-06-093761-804-09303.30 ppb
2014-06-093761-805-08003.30 ppb
2014-06-093761-806-11004.20 ppb
2014-06-093761-807-10404.10 ppb
2014-09-083761-800-10502.80 ppb
2014-09-083761-801-10302.30 ppb
2014-09-083761-802-07502.40 ppb
2014-09-083761-803-08102.70 ppb
2014-09-083761-804-08302.60 ppb
2014-09-083761-805-08302.50 ppb
2014-09-083761-806-11302.70 ppb
2014-09-083761-807-10002.60 ppb
2014-12-083761-800-07505.90 ppb
2014-12-083761-801-11005.10 ppb
2014-12-083761-802-08503.70 ppb
2014-12-083761-803-09054.80 ppb
2014-12-083761-804-09203.40 ppb
2014-12-083761-805-08453.50 ppb
2014-12-083761-806-10006.40 ppb
2014-12-083761-807-10505.10 ppb
2015-03-023761-800-07507.40 ppb
2015-03-023761-801-08007.40 ppb
2015-03-023761-802-08404.10 ppb
2015-03-023761-803-08503.50 ppb
2015-03-023761-804-09203.60 ppb
2015-03-023761-805-09556.70 ppb
2015-03-023761-806-11203.30 ppb
2015-03-023761-807-11506.80 ppb
2015-06-083761-800-08004.60 ppb
2015-06-083761-801-08155.60 ppb
2015-06-083761-802-08453.20 ppb
2015-06-083761-803-09003.80 ppb
2015-06-083761-804-10002.80 ppb
2015-06-083761-805-09303.20 ppb
2015-06-083761-806-11003.80 ppb
2015-06-083761-807-11403.20 ppb
2015-09-143761-800-07453.40 ppb
2015-09-143761-801-07553.30 ppb
2015-09-143761-802-08203.20 ppb
2015-09-143761-803-08403.20 ppb
2015-09-143761-804-09303.00 ppb
2015-09-143761-805-09053.00 ppb
2015-09-143761-806-10403.00 ppb
2015-09-143761-807-11152.80 ppb
2015-12-143761-800-08055.60 ppb
2015-12-143761-801-08156.50 ppb
2015-12-143761-802-08453.40 ppb
2015-12-143761-803-09052.20 ppb
2015-12-143761-804-10204.50 ppb
2015-12-143761-805-09553.20 ppb
2015-12-143761-806-11203.90 ppb
2015-12-143761-807-12052.80 ppb
2016-03-143761-800-08009.40 ppb
2016-03-143761-801-08157.20 ppb
2016-03-143761-802-08456.70 ppb
2016-03-143761-803-09006.40 ppb
2016-03-143761-804-10053.80 ppb
2016-03-143761-805-09458.30 ppb
2016-03-143761-806-112013.5 ppb
2016-03-143761-807-12155.40 ppb
2016-06-133761-800-08003.50 ppb
2016-06-133761-801-08103.50 ppb
2016-06-133761-802-08453.50 ppb
2016-06-133761-803-09003.70 ppb
2016-06-133761-804-10054.00 ppb
2016-06-133761-805-09353.40 ppb
2016-06-133761-806-11053.60 ppb
2016-06-133761-807-11403.70 ppb
2016-09-123761-800-08053.00 ppb
2016-09-123761-801-08204.10 ppb
2016-09-123761-802-08453.20 ppb
2016-09-123761-803-07453.00 ppb
2016-09-123761-804-09002.60 ppb
2016-09-123761-805-09303.10 ppb
2016-09-123761-806-10353.00 ppb
2016-09-123761-807-11302.90 ppb
2016-12-123761-800-08002.80 ppb
2016-12-123761-801-08103.00 ppb
2016-12-123761-802-08304.10 ppb
2016-12-123761-803-08504.10 ppb
2016-12-123761-804-09353.80 ppb
2016-12-123761-805-09153.50 ppb
2016-12-123761-806-11003.90 ppb
2016-12-123761-807-11404.10 ppb
2017-03-133761-800-08151.10 ppb
2017-03-133761-801-08301.50 ppb
2017-03-133761-802-0900ND
2017-03-133761-803-09251.000 ppb
2017-03-133761-804-1015ND
2017-03-133761-805-0955ND
2017-03-133761-806-11152.10 ppb
2017-03-133761-807-1145ND
2017-09-113761-800-08001.40 ppb
2017-09-113761-801-08151.50 ppb
2017-09-113761-802-08401.20 ppb
2017-09-113761-803-08551.70 ppb
2017-09-113761-804-09501.60 ppb
2017-09-113761-805-09201.60 ppb
2017-09-113761-806-11001.30 ppb
2017-09-113761-807-11451.30 ppb
2017-12-113761-800-08005.70 ppb
2017-12-113761-801-08106.50 ppb
2017-12-113761-802-08304.20 ppb
2017-12-113761-803-08454.50 ppb
2017-12-113761-804-09003.20 ppb
2017-12-113761-805-09404.90 ppb
2017-12-113761-806-10403.60 ppb
2017-12-113761-807-11255.20 ppb
2018-03-123761-800-08003.60 ppb
2018-03-123761-801-08102.60 ppb
2018-03-123761-802-08354.00 ppb
2018-03-123761-803-08503.80 ppb
2018-03-123761-804-09456.20 ppb
2018-03-123761-805-092013.2 ppb
2018-03-123761-806-104512.0 ppb
2018-03-123761-807-11356.80 ppb
2018-06-113761-800-08001.30 ppb
2018-06-113761-801-08101.30 ppb
2018-06-113761-802-0830ND
2018-06-113761-803-0840ND
2018-06-113761-804-09402.10 ppb
2018-06-113761-805-09101.10 ppb
2018-06-113761-806-10351.90 ppb
2018-06-113761-807-11201.40 ppb
2018-09-103761-800-08002.50 ppb
2018-09-103761-801-08152.40 ppb
2018-09-103761-802-08402.50 ppb
2018-09-103761-803-08552.50 ppb
2018-09-103761-804-09452.00 ppb
2018-09-103761-805-09202.70 ppb
2018-09-103761-806-10502.70 ppb
2018-09-103761-807-11302.40 ppb
2018-12-103761-800-08002.20 ppb
2018-12-103761-801-08103.60 ppb
2018-12-103761-802-0900ND
2018-12-103761-803-0935ND
2018-12-103761-804-10152.70 ppb
2018-12-103761-805-09201.000 ppb
2018-12-103761-806-11206.30 ppb
2018-12-103761-807-1150ND
2019-03-113761-800-08101.70 ppb
2019-03-113761-801-08251.40 ppb
2019-03-113761-802-08501.60 ppb
2019-03-113761-803-09001.60 ppb
2019-03-113761-804-09505.70 ppb
2019-03-113761-805-09254.80 ppb
2019-03-113761-806-10504.90 ppb
2019-03-113761-807-11301.60 ppb
2019-06-103761-800-07501.70 ppb
2019-06-103761-801-08002.00 ppb
2019-06-103761-802-08301.60 ppb
2019-06-103761-803-08501.60 ppb
2019-06-103761-804-09454.40 ppb
2019-06-103761-805-09202.00 ppb
2019-06-103761-806-11054.10 ppb
2019-06-103761-807-11501.50 ppb
2019-09-093761-800-08265.00 ppb
2019-09-093761-801-08406.30 ppb
2019-09-093761-802-09104.20 ppb
2019-09-093761-803-09253.60 ppb
2019-09-093761-804-10252.00 ppb
2019-09-093761-805-10004.90 ppb
2019-09-093761-806-12053.10 ppb
2019-09-093761-807-12453.90 ppb
2019-12-093761-800-08354.40 ppb
2019-12-093761-801-08554.00 ppb
2019-12-093761-802-09253.30 ppb
2019-12-093761-803-10003.00 ppb
2019-12-093761-804-11055.20 ppb
2019-12-093761-805-10306.10 ppb
2019-12-093761-806-12206.40 ppb
2019-12-093761-807-1255ND