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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Orange Water Department

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

 

139

Samples

0

Samples exceeding legal limit (MCL)

113

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.21 ppb3225ND - 3.81 ppb
20151.56 ppb2724ND - 3.85 ppb
20160.955 ppb2015ND - 2.30 ppb
20171.73 ppb1916ND - 5.19 ppb
20181.85 ppb2016ND - 4.17 ppb
20192.09 ppb2117ND - 5.83 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
2014-01-16L4877160-4ND
2014-01-16L4877160-22.02 ppb
2014-02-21L4910546-40.600 ppb
2014-03-06L4941383-2ND
2014-03-06L4941383-1ND
2014-03-06L4941383-3ND
2014-03-06L4941383-4ND
2014-03-12L4953056-4ND
2014-04-09L4988791-2ND
2014-04-09L4988791-60.800 ppb
2014-05-12L5029187-40.980 ppb
2014-06-13L5056403-42.12 ppb
2014-06-13L5056403-31.68 ppb
2014-06-13L5056403-21.60 ppb
2014-06-13L5056403-11.60 ppb
2014-06-13L5073677-41.30 ppb
2014-07-25L5123452-22.08 ppb
2014-07-25L5123452-40.820 ppb
2014-08-22L5176482-40.770 ppb
2014-09-18L5205867-42.34 ppb
2014-09-18L5205867-31.41 ppb
2014-09-18L5205867-21.72 ppb
2014-09-18L5205867-11.58 ppb
2014-09-18L5215537-40.990 ppb
2014-10-15L5248018-22.21 ppb
2014-10-15L5259741-40.750 ppb
2014-11-19L5298215-40.530 ppb
2014-12-17L5320959-43.81 ppb
2014-12-17L5320959-31.91 ppb
2014-12-17L5320959-22.17 ppb
2014-12-17L5320959-12.00 ppb
2014-12-17L5336136-40.820 ppb
2015-01-13L5364969-22.07 ppb
2015-01-13L5389200-41.59 ppb
2015-02-03L4975034-22.01 ppb
2015-03-17L5450528-42.26 ppb
2015-03-17L5450528-33.70 ppb
2015-03-17L5450528-23.85 ppb
2015-03-17L5450528-12.00 ppb
2015-03-17L5465599-40.900 ppb
2015-04-13L5498034-1ND
2015-04-13L5512149-40.920 ppb
2015-05-21L5553640-41.19 ppb
2015-06-15L5587050-41.90 ppb
2015-06-15L5587050-31.63 ppb
2015-06-15L5587050-21.50 ppb
2015-06-15L5587050-11.50 ppb
2015-06-18L5606954-41.34 ppb
2015-07-08L5652720-1ND
2015-07-08L5673964-41.18 ppb
2015-09-14L5760591-41.61 ppb
2015-09-14L5760591-31.10 ppb
2015-09-14L5760591-21.19 ppb
2015-09-14L5760591-11.19 ppb
2015-10-07L5818039-1ND
2015-12-14L5908696-42.12 ppb
2015-12-14L5908696-31.89 ppb
2015-12-14L5908696-21.80 ppb
2015-12-14L5908696-11.74 ppb
2016-01-06L5967051-1ND
2016-03-16L6132071-42.30 ppb
2016-03-16L6132071-31.90 ppb
2016-03-16L6132071-21.90 ppb
2016-03-16L6132071-11.80 ppb
2016-04-11L6125924-1ND
2016-06-14L6254335-41.40 ppb
2016-06-14L6254335-31.000 ppb
2016-06-14L6254335-21.000 ppb
2016-06-14L6254335-11.10 ppb
2016-07-05L6313866-1ND
2016-09-1421756870021.50 ppb
2016-09-1421756870030.750 ppb
2016-09-1421756870040.750 ppb
2016-09-1421756870010.700 ppb
2016-10-132182439001ND
2016-12-1321959480021.30 ppb
2016-12-1321959480030.870 ppb
2016-12-132195948004ND
2016-12-1321959480010.820 ppb
2017-03-177030471-024.15 ppb
2017-03-177030471-030.783 ppb
2017-03-177030471-040.811 ppb
2017-03-177030471-010.735 ppb
2017-04-11DWSC2952-1ND
2017-06-13DWSC3310-25.19 ppb
2017-06-13DWSC3310-41.80 ppb
2017-06-13DWSC3310-11.88 ppb
2017-06-13DWSC3310-31.80 ppb
2017-07-11DWSC3483-2ND
2017-09-12DWSC3888-22.69 ppb
2017-09-12DWSC3888-41.82 ppb
2017-09-12DWSC3888-12.55 ppb
2017-09-12DWSC3888-32.10 ppb
2017-10-10DWSC4070-10ND
2017-12-11DWSC4417-22.17 ppb
2017-12-11DWSC4417-41.39 ppb
2017-12-11DWSC4417-11.53 ppb
2017-12-11DWSC4417-31.51 ppb
2018-01-11DWSC4503-1AND
2018-03-15A259332.18 ppb
2018-03-15A259341.30 ppb
2018-03-15A259321.21 ppb
2018-03-15A259351.45 ppb
2018-04-17DWSC5241-1ND
2018-06-12DWSC5494-22.78 ppb
2018-06-12DWSC5494-42.36 ppb
2018-06-12DWSC5494-12.65 ppb
2018-06-12DWSC5494-32.45 ppb
2018-07-1018071024-01ND
2018-09-1418091411-024.17 ppb
2018-09-1418091411-042.41 ppb
2018-09-1418091411-012.33 ppb
2018-09-1418091411-032.40 ppb
2018-10-1118101225-01ND
2018-12-1118121202-042.51 ppb
2018-12-1118121202-022.19 ppb
2018-12-1118121202-012.21 ppb
2018-12-1118121202-032.30 ppb
2019-01-0319010313-022.25 ppb
2019-01-0319010313-01ND
2019-03-1319031502-031.60 ppb
2019-03-1319031502-041.46 ppb
2019-03-1319031502-014.20 ppb
2019-03-1319031502-021.51 ppb
2019-04-0919040924-01ND
2019-06-127063689002-THM2.80 ppb
2019-06-127093689004-THM2.10 ppb
2019-06-127093689001-THM2.10 ppb
2019-06-127063689003-THM2.30 ppb
2019-07-0219070317-001ND
2019-09-1119091110-0042.98 ppb
2019-09-1119091110-0023.31 ppb
2019-09-1119091110-0012.41 ppb
2019-09-1119091110-0032.52 ppb
2019-10-0119100202-001ND
2019-12-2419123104-0025.83 ppb
2019-12-2419123104-0042.03 ppb
2019-12-2419123104-0012.28 ppb
2019-12-2419123104-0032.17 ppb