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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

South Central Water Assn

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

 

93

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
2016ND180ND
2017ND160ND
2018ND110ND
2019ND160ND

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
2014-01-29140130-004THND
2014-01-30140130-003THND
2014-01-30140130-002THND
2014-01-30140130-001THND
2014-04-30140501-024THND
2014-04-30140501-023THND
2014-04-30140501-022THND
2014-04-30140501-021THND
2014-07-30140731-037THND
2014-07-30140731-036THND
2014-07-30140731-038THND
2014-07-30140731-039THND
2014-10-29141031-004THND
2014-10-29141031-003THND
2014-10-29141031-002THND
2014-10-29141031-001THND
2015-01-26150127-018THND
2015-01-26150127-017THND
2015-01-26150127-016THND
2015-01-26150127-015THND
2015-04-29150430-024THND
2015-04-29150430-023THND
2015-04-29150430-025THND
2015-04-29150430-026THND
2015-07-29150730-024THND
2015-07-29150730-023THND
2015-07-29150730-022THND
2015-07-29150730-021THND
2015-10-28151029-024THND
2015-10-28151029-023THND
2015-10-28151029-022THND
2015-10-28151029-021THND
2016-02-01160202-034THND
2016-02-01160202-029THND
2016-02-01160202-030THND
2016-02-01160202-033THND
2016-04-18160420-019THND
2016-04-18160420-018THND
2016-04-18160420-016THND
2016-04-18160420-015THND
2016-08-22160823-036THND
2016-08-22160823-035THND
2016-08-22160823-034THND
2016-08-22160823-033THND
2016-09-21160923-011THND
2016-09-21160923-012THND
2016-09-21160923-010THND
2016-09-21160923-009THND
2016-10-25161027-015THND
2016-10-25161027-014THND
2017-01-17170118-009THND
2017-01-17170118-008THND
2017-01-17170118-007THND
2017-01-17170118-006THND
2017-05-01170503-008THND
2017-05-01170503-007THND
2017-05-01170503-006THND
2017-05-01170503-005THND
2017-07-18170719-012THND
2017-07-18170719-009THND
2017-07-18170719-010THND
2017-07-18170719-011THND
2017-10-24171025-008THND
2017-10-24171025-007THND
2017-10-24171025-006THND
2017-10-24171025-005THND
2018-01-18180119-007THND
2018-01-18180119-006THND
2018-01-18180119-005THND
2018-07-25180726-011THND
2018-07-25180726-008THND
2018-07-25180726-009THND
2018-07-25180726-010THND
2018-10-17181018-004THND
2018-10-17181018-003THND
2018-10-17181018-002THND
2018-10-17181018-001THND
2019-02-07190208-011THND
2019-02-07190208-012THND
2019-02-07190208-013THND
2019-02-07190208-014THND
2019-04-24190425-016THND
2019-04-24190425-015THND
2019-04-24190425-010THND
2019-04-24190425-009THND
2019-07-19190719-013THND
2019-07-19190719-012THND
2019-07-19190719-011THND
2019-07-19190719-010THND
2019-11-06191107-008THND
2019-11-06191107-009THND
2019-11-06191107-010THND
2019-11-06191107-007THND