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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Paw Penn 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

 

64

Samples

0

Samples exceeding legal limit (MCL)

37

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.838 ppb167ND - 5.20 ppb
20152.19 ppb108ND - 5.80 ppb
20161.58 ppb85ND - 6.20 ppb
20172.49 ppb880.700 ppb - 7.10 ppb
20181.43 ppb64ND - 3.00 ppb
20190.550 ppb167ND - 2.90 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
2014-01-0724407801ND
2014-01-0724410901ND
2014-01-0724407901ND
2014-01-08244108010.900 ppb
2014-04-07253391011.30 ppb
2014-04-0725336901ND
2014-04-0725339201ND
2014-04-0725337001ND
2014-07-07261146015.20 ppb
2014-07-07261128010.500 ppb
2014-07-0726112901ND
2014-07-07261147011.000 ppb
2014-10-0627100801ND
2014-10-06271033010.800 ppb
2014-10-06271034013.70 ppb
2014-10-0627100701ND
2015-01-05123155171.30 ppb
2015-01-0512315523ND
2015-04-07126606995.80 ppb
2015-04-07126607050.900 ppb
2015-04-0712660693ND
2015-04-07126606871.000 ppb
2015-07-06130434345.40 ppb
2015-07-06130434401.90 ppb
2015-10-05134197374.30 ppb
2015-10-05134197431.30 ppb
2016-01-05137831660.900 ppb
2016-01-05137831601.30 ppb
2016-04-04141393761.30 ppb
2016-04-0414139382ND
2016-07-06146103562.90 ppb
2016-07-0614610362ND
2016-10-0415112432ND
2016-10-04151124266.20 ppb
2017-01-10155516232.50 ppb
2017-01-10155516290.700 ppb
2017-04-05159757271.50 ppb
2017-04-05159757331.000 ppb
2017-07-06164501522.90 ppb
2017-07-06164501467.10 ppb
2017-10-05169150092.10 ppb
2017-10-05169150032.10 ppb
2018-07-05402074013.00 ppb
2018-07-05402075011.90 ppb
2018-10-088102701-02ND
2018-10-088102701-032.20 ppb
2018-10-088102701-04ND
2018-10-088102701-011.50 ppb
2019-01-07424997011.30 ppb
2019-01-0742498301ND
2019-01-0742498401ND
2019-01-07424998011.000 ppb
2019-04-0843658601ND
2019-04-0843658801ND
2019-04-0843658901ND
2019-04-08436587010.800 ppb
2019-07-0845016501ND
2019-07-0845018401ND
2019-07-08450166010.700 ppb
2019-07-08450183012.90 ppb
2019-10-07468320011.60 ppb
2019-10-0746832101ND
2019-10-0746831901ND
2019-10-07468322010.500 ppb