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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Orleans 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

 

232

Samples

0

Samples exceeding legal limit (MCL)

172

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND60ND
20151.23 ppb5636ND - 3.50 ppb
20161.24 ppb5238ND - 3.20 ppb
20172.05 ppb4238ND - 6.30 ppb
20181.83 ppb3830ND - 4.70 ppb
20192.02 ppb3830ND - 9.50 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 Result
2014-05-14ND
2014-05-14ND
2014-05-14ND
2014-05-14ND
2014-05-14ND
2014-05-14ND
2015-02-112.00 ppb
2015-02-112.00 ppb
2015-02-112.30 ppb
2015-02-112.30 ppb
2015-02-112.20 ppb
2015-02-112.20 ppb
2015-02-112.00 ppb
2015-02-112.00 ppb
2015-05-131.40 ppb
2015-05-131.40 ppb
2015-05-132.20 ppb
2015-05-132.20 ppb
2015-05-132.40 ppb
2015-05-132.40 ppb
2015-05-131.70 ppb
2015-05-131.70 ppb
2015-06-10ND
2015-06-10ND
2015-06-10ND
2015-06-10ND
2015-06-10ND
2015-06-10ND
2015-08-120.950 ppb
2015-08-120.950 ppb
2015-08-120.750 ppb
2015-08-120.750 ppb
2015-08-120.720 ppb
2015-08-120.720 ppb
2015-08-121.90 ppb
2015-08-121.90 ppb
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-122.00 ppb
2015-08-122.00 ppb
2015-10-010.600 ppb
2015-10-010.600 ppb
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-11-181.60 ppb
2015-11-181.60 ppb
2015-11-183.50 ppb
2015-11-183.50 ppb
2015-11-183.40 ppb
2015-11-183.40 ppb
2015-11-182.80 ppb
2015-11-182.80 ppb
2016-02-101.80 ppb
2016-02-101.80 ppb
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-172.30 ppb
2016-02-172.30 ppb
2016-02-172.30 ppb
2016-02-172.30 ppb
2016-02-172.10 ppb
2016-02-172.10 ppb
2016-02-171.40 ppb
2016-02-171.40 ppb
2016-05-182.60 ppb
2016-05-182.60 ppb
2016-05-182.70 ppb
2016-05-182.70 ppb
2016-05-182.60 ppb
2016-05-182.60 ppb
2016-05-181.40 ppb
2016-05-181.40 ppb
2016-06-082.40 ppb
2016-06-082.40 ppb
2016-06-080.710 ppb
2016-06-080.710 ppb
2016-06-08ND
2016-06-08ND
2016-08-100.780 ppb
2016-08-100.780 ppb
2016-08-100.810 ppb
2016-08-100.810 ppb
2016-08-10ND
2016-08-10ND
2016-08-10ND
2016-08-10ND
2016-08-100.680 ppb
2016-08-100.680 ppb
2016-08-10ND
2016-08-10ND
2016-08-100.530 ppb
2016-08-100.530 ppb
2016-11-161.60 ppb
2016-11-161.60 ppb
2016-11-161.90 ppb
2016-11-161.90 ppb
2016-11-16ND
2016-11-16ND
2016-11-163.20 ppb
2016-11-163.20 ppb
2016-11-160.550 ppb
2016-11-160.550 ppb
2017-01-310.680 ppb
2017-01-310.680 ppb
2017-01-310.680 ppb
2017-01-310.680 ppb
2017-02-152.40 ppb
2017-02-152.40 ppb
2017-02-152.20 ppb
2017-02-152.20 ppb
2017-02-151.90 ppb
2017-02-151.90 ppb
2017-02-151.20 ppb
2017-02-151.20 ppb
2017-05-173.40 ppb
2017-05-173.40 ppb
2017-05-174.10 ppb
2017-05-174.10 ppb
2017-05-174.70 ppb
2017-05-174.70 ppb
2017-05-171.50 ppb
2017-05-171.50 ppb
2017-05-231.70 ppb
2017-05-231.70 ppb
2017-05-23ND
2017-05-23ND
2017-05-23ND
2017-05-23ND
2017-08-161.000 ppb
2017-08-161.000 ppb
2017-08-161.30 ppb
2017-08-161.30 ppb
2017-08-162.70 ppb
2017-08-162.70 ppb
2017-08-160.790 ppb
2017-08-160.790 ppb
2017-11-152.90 ppb
2017-11-152.90 ppb
2017-11-152.80 ppb
2017-11-152.80 ppb
2017-11-156.30 ppb
2017-11-156.30 ppb
2017-11-150.840 ppb
2017-11-150.840 ppb
2018-02-141.90 ppb
2018-02-141.90 ppb
2018-02-141.90 ppb
2018-02-141.90 ppb
2018-02-141.90 ppb
2018-02-141.90 ppb
2018-02-14ND
2018-02-14ND
2018-05-162.30 ppb
2018-05-162.30 ppb
2018-05-162.00 ppb
2018-05-162.00 ppb
2018-05-163.60 ppb
2018-05-163.60 ppb
2018-05-161.60 ppb
2018-05-161.60 ppb
2018-06-132.40 ppb
2018-06-132.40 ppb
2018-06-130.650 ppb
2018-06-130.650 ppb
2018-06-13ND
2018-06-13ND
2018-08-15ND
2018-08-15ND
2018-08-150.760 ppb
2018-08-150.760 ppb
2018-08-152.70 ppb
2018-08-152.70 ppb
2018-08-15ND
2018-08-15ND
2018-11-142.80 ppb
2018-11-142.80 ppb
2018-11-142.90 ppb
2018-11-142.90 ppb
2018-11-144.70 ppb
2018-11-144.70 ppb
2018-11-142.60 ppb
2018-11-142.60 ppb
2019-02-131.40 ppb
2019-02-131.40 ppb
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-05-152.40 ppb
2019-05-152.40 ppb
2019-05-152.70 ppb
2019-05-152.70 ppb
2019-05-152.00 ppb
2019-05-152.00 ppb
2019-05-152.70 ppb
2019-05-152.70 ppb
2019-05-150.620 ppb
2019-05-150.620 ppb
2019-05-15ND
2019-05-15ND
2019-05-151.70 ppb
2019-05-151.70 ppb
2019-08-130.720 ppb
2019-08-130.720 ppb
2019-08-131.000 ppb
2019-08-131.000 ppb
2019-08-132.60 ppb
2019-08-132.60 ppb
2019-08-131.10 ppb
2019-08-131.10 ppb
2019-11-143.10 ppb
2019-11-143.10 ppb
2019-11-144.00 ppb
2019-11-144.00 ppb
2019-11-149.50 ppb
2019-11-149.50 ppb
2019-11-142.90 ppb
2019-11-142.90 ppb