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EWG's Tap Water Database — 2019 UPDATE

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Bromoform

Eden Prairie

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

30

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.02 ppb2216ND - 2.10 ppb
20131.20 ppb32ND - 1.80 ppb
20141.29 ppb330.660 ppb - 1.60 ppb
20151.60 ppb221.60 ppb
20161.43 ppb440.900 ppb - 1.90 ppb
20171.37 ppb331.20 ppb - 1.50 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 Lab ID Result
2012-03-1212C0319-011.50 ppb
2012-03-1212C0381-010.750 ppb
2012-03-1212C0380-04ND
2012-03-1212C0380-03ND
2012-03-1212C0380-02ND
2012-03-1212C0380-01ND
2012-03-1212C0319-041.20 ppb
2012-03-1212C0319-031.40 ppb
2012-03-1212C0319-021.000 ppb
2012-05-0912E0874-010.790 ppb
2012-06-1212F0752-041.60 ppb
2012-06-1212F0752-031.70 ppb
2012-06-1212F0752-02ND
2012-06-1212F0752-011.90 ppb
2012-09-1112I0505-011.70 ppb
2012-09-1112I0505-02ND
2012-09-1112I0505-032.10 ppb
2012-09-1112I0505-041.50 ppb
2012-12-1012L0337-041.30 ppb
2012-12-1012L0337-031.70 ppb
2012-12-1012L0337-020.800 ppb
2012-12-1012L0337-011.40 ppb
2013-06-0513F0270-011.80 ppb
2013-06-0513F0270-021.80 ppb
2013-09-2313I1214-01ND
2014-05-2314E2784-010.660 ppb
2014-06-0314F0498-011.60 ppb
2014-06-0314F0498-021.60 ppb
2015-06-0115F0084-021.60 ppb
2015-06-0115F0084-011.60 ppb
2016-05-0434421930.900 ppb
2016-06-0616F0242-011.80 ppb
2016-06-0616F0242-021.90 ppb
2016-12-1416L0582-011.10 ppb
2017-02-2217B1178-011.20 ppb
2017-06-1217F0709-011.40 ppb
2017-06-1217F0709-021.50 ppb