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Bromoform

Fremont City

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.

 

100

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20101.86 ppb179ND - 7.90 ppb
20110.776 ppb178ND - 2.10 ppb
20121.28 ppb1713ND - 2.60 ppb
20130.685 ppb1714ND - 1.30 ppb
20141.53 ppb16160.700 ppb - 2.90 ppb
20151.86 ppb16161.10 ppb - 2.70 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.5 ppb

The 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.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-01-12331295040.700 ppb
2010-01-12331295050.700 ppb
2010-01-12331295060.700 ppb
2010-01-12331295070.600 ppb
2010-04-08103285-04ND
2010-04-08103285-05ND
2010-04-09103285-06ND
2010-04-09103285-07ND
2010-06-09104940-03ND
2010-07-12105821-01ND
2010-07-12105821-020.500 ppb
2010-07-12105821-03ND
2010-07-12105821-04ND
2010-10-12108410-047.90 ppb
2010-10-12108410-056.60 ppb
2010-10-12108410-067.70 ppb
2010-10-12108410-076.20 ppb
2011-01-1011-10236-04ND
2011-01-1011-10236-05ND
2011-01-1011-10236-06ND
2011-01-1011-10236-07ND
2011-04-0511-12314-011.50 ppb
2011-04-0511-12314-021.000 ppb
2011-04-0511-12314-031.10 ppb
2011-04-0511-12314-041.50 ppb
2011-06-0611-13932-04ND
2011-07-1211-15090-012.00 ppb
2011-07-1211-15090-021.90 ppb
2011-07-1211-15090-032.10 ppb
2011-07-1211-15090-042.10 ppb
2011-10-0411-18107-02ND
2011-10-0411-18107-03ND
2011-10-0411-18107-01ND
2011-10-0411-18107-04ND
2012-01-1112-10572-010.900 ppb
2012-01-1112-10572-020.900 ppb
2012-01-1112-10572-031.000 ppb
2012-01-1112-10572-041.10 ppb
2012-04-1112-14075-011.50 ppb
2012-04-1112-14075-021.80 ppb
2012-04-1112-14075-062.00 ppb
2012-04-1112-14075-071.70 ppb
2012-06-0612-16544-011.000 ppb
2012-07-0912-18153-012.50 ppb
2012-07-0912-18153-022.40 ppb
2012-07-0912-18153-032.40 ppb
2012-07-0912-18153-042.60 ppb
2012-10-0912-23017-01ND
2012-10-0912-23017-02ND
2012-10-0912-23017-06ND
2012-10-0912-23017-07ND
2013-01-0213-10169-01ND
2013-01-0213-10169-020.600 ppb
2013-01-0213-10169-04ND
2013-01-0213-10169-050.500 ppb
2013-04-0113-13943-030.600 ppb
2013-04-0113-13943-04ND
2013-04-0113-13943-050.600 ppb
2013-04-0113-13943-060.600 ppb
2013-06-0313-16817-01A0.550 ppb
2013-07-0113-18526-010.900 ppb
2013-07-0113-18526-020.900 ppb
2013-07-0113-18526-040.700 ppb
2013-07-0113-18526-031.000 ppb
2013-10-0113-23328-041.000 ppb
2013-10-0113-23328-071.10 ppb
2013-10-0113-23328-051.30 ppb
2013-10-0113-23328-061.30 ppb
2014-01-0614-10264-011.10 ppb
2014-01-0614-10264-021.40 ppb
2014-01-0614-10264-030.800 ppb
2014-01-0614-10264-041.40 ppb
2014-04-0114-13877-010.900 ppb
2014-04-0114-13877-021.000 ppb
2014-04-0114-13877-051.10 ppb
2014-04-0114-13877-060.700 ppb
2014-07-0114-18617-011.10 ppb
2014-07-0114-18617-021.80 ppb
2014-07-0114-18617-041.50 ppb
2014-07-0114-18617-051.000 ppb
2014-10-0614-23864-032.60 ppb
2014-10-0614-23864-042.90 ppb
2014-10-0614-23864-062.80 ppb
2014-10-0614-23864-052.30 ppb
2015-01-0615-10230-052.40 ppb
2015-01-0615-10230-062.70 ppb
2015-01-0615-10230-072.60 ppb
2015-01-0615-10230-081.30 ppb
2015-04-0115-13990-031.60 ppb
2015-04-0115-13990-041.60 ppb
2015-04-0115-13990-051.60 ppb
2015-04-0115-13990-061.10 ppb
2015-07-0815-19412-011.40 ppb
2015-07-0815-19412-021.70 ppb
2015-07-0815-19412-031.20 ppb
2015-07-0815-19412-041.70 ppb
2015-10-0515-24451-032.10 ppb
2015-10-0515-24451-041.90 ppb
2015-10-0515-24451-012.40 ppb
2015-10-0515-24451-022.50 ppb