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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Rehoboth 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

 

119

Samples

0

Samples exceeding legal limit (MCL)

63

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.505 ppb2012ND - 1.35 ppb
20150.276 ppb237ND - 1.15 ppb
20160.408 ppb189ND - 1.07 ppb
20170.737 ppb1810ND - 2.71 ppb
20180.818 ppb2011ND - 3.16 ppb
20190.678 ppb2014ND - 1.98 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
2014-03-05S4790510.720 ppb
2014-03-05S479052ND
2014-03-05S4790531.15 ppb
2014-03-05S4790540.720 ppb
2014-05-15S479194ND
2014-06-02S479123ND
2014-06-02S4791240.820 ppb
2014-06-02S4791250.650 ppb
2014-06-02S4791260.840 ppb
2014-07-28L5175318-1ND
2014-09-03S4791911.000 ppb
2014-09-03S4791920.950 ppb
2014-09-03S5369640.530 ppb
2014-09-03S5369651.35 ppb
2014-10-15S257741ND
2014-10-21S251486ND
2014-12-01S316446ND
2014-12-01S316447ND
2014-12-01S3164480.530 ppb
2014-12-01S3164490.830 ppb
2015-01-14S504599ND
2015-03-02S580502ND
2015-03-02S580503ND
2015-03-02S5805040.740 ppb
2015-03-02S5805050.540 ppb
2015-05-27S612405ND
2015-06-01S612414ND
2015-06-01S612415ND
2015-06-01S6124161.13 ppb
2015-06-01S6124170.990 ppb
2015-08-10S590347ND
2015-08-26S602019ND
2015-09-09S602035ND
2015-09-09S6020361.15 ppb
2015-09-09S602037ND
2015-09-09S6020380.650 ppb
2015-10-20S614746ND
2015-10-20S614747ND
2015-11-05S624991ND
2015-12-07S625009ND
2015-12-07S625010ND
2015-12-07S625011ND
2015-12-07S6250121.14 ppb
2016-03-07S602103ND
2016-03-07S602104ND
2016-03-07S602105ND
2016-03-07S6021060.840 ppb
2016-04-11S73229ND
2016-04-11S73230ND
2016-06-06S629046ND
2016-06-06S6290470.580 ppb
2016-06-06S6290480.710 ppb
2016-06-06S6290491.07 ppb
2016-09-07S6703790.900 ppb
2016-09-07S6703800.630 ppb
2016-09-07S670381ND
2016-09-07S6703820.850 ppb
2016-12-05S6704000.770 ppb
2016-12-05S670401ND
2016-12-05S670402ND
2016-12-05S6704031.000 ppb
2017-01-24S670498ND
2017-03-06S679363ND
2017-03-06S679364ND
2017-03-06S679365ND
2017-03-06S6793661.01 ppb
2017-06-06S7308061.000 ppb
2017-06-06S7308070.590 ppb
2017-06-06S7308080.920 ppb
2017-06-06S7308091.06 ppb
2017-07-31S679387ND
2017-09-05S7371372.71 ppb
2017-09-05S7371412.19 ppb
2017-09-05S7371451.30 ppb
2017-09-05S7371491.96 ppb
2017-12-04S659090ND
2017-12-04S670396ND
2017-12-04S679375ND
2017-12-04S6793790.530 ppb
2018-01-24S730853ND
2018-03-06S770612ND
2018-03-06S770616ND
2018-03-06S770620ND
2018-03-06S7706241.17 ppb
2018-06-04S7707540.550 ppb
2018-06-04S770806ND
2018-06-04S7708331.25 ppb
2018-06-20S7705750.770 ppb
2018-09-05S8122893.16 ppb
2018-09-05S8122932.40 ppb
2018-09-05S8122970.670 ppb
2018-09-05S8123012.74 ppb
2018-09-10S812241ND
2018-11-09S812575ND
2018-11-09S812577ND
2018-12-05S817013ND
2018-12-05S8170171.71 ppb
2018-12-05S8170211.37 ppb
2018-12-05S8170290.570 ppb
2019-03-04S8479330.570 ppb
2019-03-04S8479370.620 ppb
2019-03-04S847941ND
2019-03-04S8479450.910 ppb
2019-04-29S847993ND
2019-04-29S8479951.98 ppb
2019-05-28S8480140.680 ppb
2019-05-28S848015ND
2019-06-03S8480591.32 ppb
2019-06-03S8480631.09 ppb
2019-06-03S8480670.810 ppb
2019-06-03S8480711.45 ppb
2019-09-03S8646971.13 ppb
2019-09-03S8647010.760 ppb
2019-09-03S864705ND
2019-09-03S864709ND
2019-12-03S9199070.620 ppb
2019-12-03S9199110.540 ppb
2019-12-03S919915ND
2019-12-03S9199191.08 ppb