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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Onslow Water And Sewer 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.

MORE ABOUT THIS CONTAMINANT

 

144

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.250 ppb246ND - 1.000 ppb
2015ND240ND
2016ND240ND
20170.487 ppb246ND - 2.86 ppb
2018ND240ND
2019ND240ND

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
2014-02-1037404-021014-1401.000 ppb
2014-02-1037404-021014-1401.000 ppb
2014-02-1037404-021014-1401.000 ppb
2014-02-1037404-021014-1401.000 ppb
2014-02-1037404-021014-1401.000 ppb
2014-02-1037404-021014-1401.000 ppb
2014-05-1237404-021014-140ND
2014-05-1237404-021014-140ND
2014-05-1237404-021014-140ND
2014-05-1237404-021014-140ND
2014-05-1237404-021014-140ND
2014-05-1237404-021014-140ND
2014-08-12141755ND
2014-08-12141757ND
2014-08-12141758ND
2014-08-12141759ND
2014-08-12141760ND
2014-08-12141756ND
2014-11-1037404-111014-142ND
2014-11-1037404-111014-142ND
2014-11-1037404-111014-142ND
2014-11-1037404-111014-142ND
2014-11-1037404-111014-142ND
2014-11-1037404-111014-142ND
2015-02-09ND
2015-02-09ND
2015-02-09ND
2015-02-09ND
2015-02-09ND
2015-02-09ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-05-13ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-08-10ND
2015-11-09ND
2015-11-09ND
2015-11-09ND
2015-11-09ND
2015-11-09ND
2015-11-09ND
2016-02-0837404_160215_148ND
2016-02-0837404_160215_148ND
2016-02-0837404_160215_148ND
2016-02-0837404_160215_148ND
2016-02-0837404_160215_148ND
2016-02-0837404_160215_148ND
2016-05-0937404_160603_190ND
2016-05-0937404_160603_190ND
2016-05-0937404_160603_190ND
2016-05-0937404_160603_190ND
2016-05-0937404_160603_190ND
2016-05-0937404_160603_190ND
2016-08-0837404_160908_235ND
2016-08-0837404_160908_235ND
2016-08-0837404_160908_235ND
2016-08-0837404_160908_234ND
2016-08-0837404_160908_235ND
2016-08-0837404_160908_235ND
2016-11-0737404-1646005-01ND
2016-11-0737404-1646005-02ND
2016-11-0737404-1646005-03ND
2016-11-0737404-1646005-04ND
2016-11-0737404-1646005-05ND
2016-11-0737404-1646005-06ND
2017-02-1337404-1707001-01ND
2017-02-1337404-1707001-02ND
2017-02-1337404-1707001-03ND
2017-02-1337404-1707001-04ND
2017-02-1337404-1707001-05ND
2017-02-1337404-1707001-06ND
2017-05-0837404-L171901-01ND
2017-05-0837404-L171901-02ND
2017-05-0837404-L171901-03ND
2017-05-0837404-L171901-04ND
2017-05-0837404-L171901-05ND
2017-05-0837404-L171901-06ND
2017-08-1437404-L173301-011.26 ppb
2017-08-1437404-L173301-022.68 ppb
2017-08-1437404-L173301-032.86 ppb
2017-08-1437404-L173301-041.57 ppb
2017-08-1437404-L173301-051.35 ppb
2017-08-1437404-L173301-061.97 ppb
2017-11-0637404-L174501-01ND
2017-11-0637404-L174501-02ND
2017-11-0637404-L174501-03ND
2017-11-0637404-L174501-04ND
2017-11-0637404-L174501-05ND
2017-11-0637404-L174501-06ND
2018-02-0537404-L180601-01ND
2018-02-0537404-L180601-02ND
2018-02-0537404-L180601-03ND
2018-02-0537404-L180601-04ND
2018-02-0537404-L180601-05ND
2018-02-0537404-L180601-06ND
2018-05-0737404-L181901-01ND
2018-05-0737404-L181901-02ND
2018-05-0737404-L181901-03ND
2018-05-0737404-L181901-04ND
2018-05-0737404-L181901-05ND
2018-05-0737404-L181901-06ND
2018-08-1337404-L183301-01ND
2018-08-1337404-L183301-02ND
2018-08-1337404-L183301-03ND
2018-08-1337404-L183301-04ND
2018-08-1337404-L183301-05ND
2018-08-1337404-L183301-06ND
2018-11-0537729_18-46038 ND
2018-11-0537729_18-46040 ND
2018-11-0537729_18-46041 ND
2018-11-0537729_18-46042 ND
2018-11-0537729_18-46043 ND
2018-11-0537729_18-46044 ND
2019-02-0437404-L190601-01ND
2019-02-0437404-L190601-02ND
2019-02-0437404-L190601-03ND
2019-02-0437404-L190601-04ND
2019-02-0437404-L190601-05ND
2019-02-0437404-L190601-06ND
2019-05-06L191901-01 ND
2019-05-06L191901-02 ND
2019-05-06L191901-03 ND
2019-05-06L191901-04 ND
2019-05-06L191901-05 ND
2019-05-06L191901-06 ND
2019-08-12L193301-01A ND
2019-08-12L193301-02A ND
2019-08-12L193301-03A ND
2019-08-12L193301-04A ND
2019-08-12L193301-05A ND
2019-08-12L193301-06A ND
2019-11-12L194601-07 ND
2019-11-12L194601-08 ND
2019-11-12L194601-09 ND
2019-11-12L194601-10 ND
2019-11-12L194601-11 ND
2019-11-12L194601-12 ND