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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Pritchett Water Supply Corporation

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

 

102

Samples

0

Samples exceeding legal limit (MCL)

45

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.50 ppb76ND - 4.80 ppb
20156.85 ppb199ND - 44.5 ppb
20161.88 ppb2311ND - 20.9 ppb
20171.97 ppb219ND - 18.1 ppb
20182.12 ppb186ND - 24.7 ppb
20191.45 ppb144ND - 13.7 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
2014-01-22Q1402022001ND
2014-01-22Q14020220033.60 ppb
2014-06-25Q14237830452.30 ppb
2014-06-25Q14237830464.80 ppb
2014-06-25Q14237830122.53 ppb
2014-06-25Q14237830152.14 ppb
2014-06-25Q14237830172.16 ppb
2015-03-12Q1509329005ND
2015-06-23Q15235220222.83 ppb
2015-06-23Q1523522024ND
2015-06-23Q1523522026ND
2015-06-23Q1523522028ND
2015-06-23Q1523522030ND
2015-06-23Q15235220322.36 ppb
2015-06-23Q15235220341.26 ppb
2015-06-23Q152352203542.4 ppb
2015-06-23Q1523522012ND
2015-06-23Q15235220131.07 ppb
2015-06-23Q1523522016ND
2015-06-23Q15235220181.09 ppb
2015-06-23Q1523522001ND
2015-06-23Q152352200244.5 ppb
2015-09-04Q1534659002ND
2015-09-04Q153465900330.5 ppb
2015-11-18Q1545634002ND
2015-11-18Q15456340034.19 ppb
2016-02-25Q16080210021.82 ppb
2016-02-25Q16080210041.87 ppb
2016-02-25Q16080210052.41 ppb
2016-02-25Q16080210081.79 ppb
2016-02-25Q1608021010ND
2016-02-25Q16080210122.67 ppb
2016-02-25Q1608021015ND
2016-02-25Q16080210162.79 ppb
2016-05-25Q1620685011ND
2016-05-25Q1620685003ND
2016-05-25Q16206850042.99 ppb
2016-05-25Q1620685006ND
2016-05-25Q1620685009ND
2016-08-01Q1631456002ND
2016-08-01Q16314560031.75 ppb
2016-10-24Q16450660141.36 ppb
2016-10-24Q164506601020.9 ppb
2016-10-24Q1645066015ND
2016-10-24Q1645066011ND
2016-10-24Q1645066018ND
2016-10-24Q1645066020ND
2016-10-24Q1645066008ND
2016-10-24Q16450660292.89 ppb
2017-03-02Q1709045011ND
2017-03-02Q1709045009ND
2017-03-02Q17090450102.19 ppb
2017-04-19Q1716429002ND
2017-04-19Q17164290032.07 ppb
2017-07-20Q1729911002ND
2017-07-20Q17299110039.60 ppb
2017-08-29Q1739153065ND
2017-08-29Q1739153061ND
2017-08-29Q1739153067ND
2017-08-29Q1739153064ND
2017-08-29Q17391530692.63 ppb
2017-08-29Q17391530721.54 ppb
2017-08-29Q17391530101.93 ppb
2017-08-29Q173915307418.1 ppb
2017-08-29Q17391530131.16 ppb
2017-08-29Q1739153076ND
2017-08-30Q1739907010ND
2017-08-30Q1739907001ND
2017-11-20Q1759246001ND
2017-11-20Q17592460022.23 ppb
2018-02-23Q1807826002ND
2018-02-23Q18078260012.75 ppb
2018-05-29Q1821174002ND
2018-05-29Q18211740013.71 ppb
2018-06-05Q1822214002ND
2018-06-05Q1822214004ND
2018-06-05Q1822214005ND
2018-06-05Q1822214008ND
2018-06-05Q18222140101.86 ppb
2018-06-05Q1822214012ND
2018-06-05Q18222140141.65 ppb
2018-06-05Q182221401624.7 ppb
2018-06-05Q1822214017ND
2018-06-05Q1822214019ND
2018-06-05Q1822214021ND
2018-06-05Q1822214023ND
2018-09-12Q1836200001ND
2018-09-12Q18362000023.47 ppb
2019-09-24Q1968128001ND
2019-09-24Q19681280022.49 ppb
2019-10-15Q1972651026ND
2019-10-15Q1972651016ND
2019-10-15Q1972651018ND
2019-10-15Q1972651028ND
2019-10-15Q1972651001ND
2019-10-15Q19726510302.18 ppb
2019-10-15Q19726510201.94 ppb
2019-10-15Q197265103213.7 ppb
2019-10-15Q1972651034ND
2019-10-15Q1972651003ND
2019-10-15Q1972651036ND
2019-10-15Q1972651005ND