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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

City of Norfolk

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

 

204

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
2014ND340ND
2015ND320ND
2016ND420ND
2017ND320ND
2018ND320ND
2019ND320ND

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
2014-02-1114026205-THMND
2014-02-1114026206-THMND
2014-02-1114026202-THMND
2014-02-1114026203-THMND
2014-02-1114026209-THMND
2014-02-1114026207-THMND
2014-02-1114026204-THMND
2014-02-1114026208-THMND
2014-05-13201405190154-THMND
2014-05-13201405190158-THMND
2014-05-13201405190160-THMND
2014-05-13201405190152-THMND
2014-05-13201405190151-THMND
2014-05-13201405190153-THMND
2014-05-13201405190155-THMND
2014-05-13201405190157-THMND
2014-05-13201405190156-THMND
2014-05-13201405190159-THMND
2014-08-1214083438-THMND
2014-08-1214083442-THMND
2014-08-1214083444-THMND
2014-08-1214083443-THMND
2014-08-1214083445-THMND
2014-08-1214083439-THMND
2014-08-1214083440-THMND
2014-08-1214083441-THMND
2014-11-1214116651-THMND
2014-11-1214116648-THMND
2014-11-1214116649-THMND
2014-11-1214116653-THMND
2014-11-1214116654-THMND
2014-11-1214116655-THMND
2014-11-1214116650-THMND
2014-11-1214116652-THMND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-02-1000225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-05-1200225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-08-1100225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2015-11-0900225-CITY OF NOND
2016-02-0916022766-THMND
2016-02-0916022767-THMND
2016-02-0916022768-THMND
2016-02-0916022769-THMND
2016-02-0916022770-THMND
2016-02-0916022771-THMND
2016-02-0916022772-THMND
2016-02-0916022773-THMND
2016-05-1016055867-THMND
2016-05-1016055868-THMND
2016-05-1016055869-THMND
2016-05-1016055870-THMND
2016-05-1016055871-THMND
2016-05-1016055872-THMND
2016-05-1016055873-THMND
2016-05-1016055874-THMND
2016-08-0916089115-THMND
2016-08-0916089116-THMND
2016-08-0916089117-THMND
2016-08-0916089118-THMND
2016-08-0916089119-THMND
2016-08-0916089120-THMND
2016-08-0916089121-THMND
2016-08-0916089122-THMND
2016-11-0816112199-THMND
2016-11-0816112200-THMND
2016-11-0816112201-THMND
2016-11-0816112202-THMND
2016-11-0816112203-THMND
2016-11-0816112204-THMND
2016-11-0816112205-THMND
2016-11-0816112206-THMND
2016-11-0816-20493ND
2016-11-0816-20494ND
2016-11-0816-20495ND
2016-11-0816-20496ND
2016-11-0816-20497ND
2016-11-0816-20498ND
2016-11-0816-20500ND
2016-11-0816-20501ND
2016-11-0816-20502ND
2016-11-0816-20499ND
2017-02-1417025514-THMND
2017-02-1417025515-THMND
2017-02-1417025508-THMND
2017-02-1417025509-THMND
2017-02-1417025510-THMND
2017-02-1417025511-THMND
2017-02-1417025512-THMND
2017-02-1417025513-THMND
2017-05-0917058265-THMND
2017-05-0917058266-THMND
2017-05-0917058267-THMND
2017-05-0917058268-THMND
2017-05-0917058269-THMND
2017-05-0917058270-THMND
2017-05-0917058271-THMND
2017-05-0917058272-THMND
2017-08-0817081386-THMND
2017-08-0817081387-THMND
2017-08-0817081388-THMND
2017-08-0817081389-THMND
2017-08-0817081390-THMND
2017-08-0817081391-THMND
2017-08-0817081392-THMND
2017-08-0817081393-THMND
2017-11-1417114473-THMND
2017-11-1417114474-THMND
2017-11-1417114475-THMND
2017-11-1417114476-THMND
2017-11-1417114477-THMND
2017-11-1417114478-THMND
2017-11-1417114479-THMND
2017-11-1417114480-THMND
2018-02-1318027197-THMND
2018-02-1318027198-THMND
2018-02-1318027199-THMND
2018-02-1318027200-THMND
2018-02-1318027201-THMND
2018-02-1318027202-THMND
2018-02-1318027203-THMND
2018-02-1318027204-THMND
2018-05-0818059809-THMND
2018-05-0818059810-THMND
2018-05-0818059811-THMND
2018-05-0818059812-THMND
2018-05-0818059813-THMND
2018-05-0818059814-THMND
2018-05-0818059815-THMND
2018-05-0818059816-THMND
2018-08-1418083091-THMND
2018-08-1418083092-THMND
2018-08-1418083093-THMND
2018-08-1418083094-THMND
2018-08-1418083095-THMND
2018-08-1418083096-THMND
2018-08-1418083097-THMND
2018-08-1418083098-THMND
2018-11-1318115959-THMND
2018-11-1318115960-THMND
2018-11-1318115961-THMND
2018-11-1318115962-THMND
2018-11-1318115963-THMND
2018-11-1318115964-THMND
2018-11-1318115965-THMND
2018-11-1318115966-THMND
2019-02-1219028718-THMND
2019-02-1219028719-THMND
2019-02-1219028720-THMND
2019-02-1219028721-THMND
2019-02-1219028722-THMND
2019-02-1219028723-THMND
2019-02-1219028724-THMND
2019-02-1219028725-THMND
2019-05-1419052465-THMND
2019-05-1419052466-THMND
2019-05-1419052467-THMND
2019-05-1419052468-THMND
2019-05-1419052469-THMND
2019-05-1419052470-THMND
2019-05-1419052471-THMND
2019-05-1419052472-THMND
2019-08-1319085333-THMND
2019-08-1319085334-THMND
2019-08-1319085335-THMND
2019-08-1319085336-THMND
2019-08-1319085337-THMND
2019-08-1319085338-THMND
2019-08-1319085339-THMND
2019-08-1319085364-THMND
2019-11-1219118047-THMND
2019-11-1219118048-THMND
2019-11-1219118049-THMND
2019-11-1219118050-THMND
2019-11-1219118051-THMND
2019-11-1219118052-THMND
2019-11-1219118053-THMND
2019-11-1219118054-THMND