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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Panoche Water 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

 

74

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201421.7 ppb9912.0 ppb - 32.0 ppb
201531.3 ppb121214.0 ppb - 77.0 ppb
20169.02 ppb12120.790 ppb - 20.0 ppb
20170.175 ppb81ND - 1.40 ppb
201820.3 ppb76ND - 65.0 ppb
20192.91 ppb2615ND - 13.0 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
2014-05-222371-903-085024.0 ppb
2014-05-222371-902-084520.0 ppb
2014-05-222371-901-083023.0 ppb
2014-09-242371-903-105014.0 ppb
2014-09-242371-902-104512.0 ppb
2014-09-242371-901-103015.0 ppb
2014-11-262371-903-105029.0 ppb
2014-11-262371-902-104526.0 ppb
2014-11-262371-901-103032.0 ppb
2015-02-262371-901-103077.0 ppb
2015-02-262371-903-105071.0 ppb
2015-02-262371-902-104565.0 ppb
2015-05-282371-901-103017.0 ppb
2015-05-282371-903-105016.0 ppb
2015-05-282371-902-104517.0 ppb
2015-09-102371-901-081526.0 ppb
2015-09-102371-902-083022.0 ppb
2015-09-102371-903-083522.0 ppb
2015-11-122371-901-081515.0 ppb
2015-11-122371-902-083014.0 ppb
2015-11-122371-903-083514.0 ppb
2016-03-172371-903-09500.900 ppb
2016-03-172371-901-09301.000 ppb
2016-03-172371-902-09450.790 ppb
2016-05-262371-903-095013.0 ppb
2016-05-262371-902-094512.0 ppb
2016-05-262371-901-093015.0 ppb
2016-08-182371-901-09306.30 ppb
2016-08-182371-902-09455.90 ppb
2016-08-182371-903-09506.30 ppb
2016-11-222371-901-103020.0 ppb
2016-11-222371-902-104514.0 ppb
2016-11-222371-903-105013.0 ppb
2017-02-162371-901-1030ND
2017-02-162371-902-1045ND
2017-02-162371-903-1050ND
2017-05-182371-901-1030ND
2017-05-182371-902-1045ND
2017-05-182371-903-1050ND
2017-07-285802-901-0840ND
2017-11-065802-901-14301.40 ppb
2018-03-265802-901-13009.70 ppb
2018-04-195802-901-00001.50 ppb
2018-05-245802-901-111511.0 ppb
2018-09-275802-901-085065.0 ppb
2018-12-285802-903-061021.0 ppb
2018-12-285802-901-063034.0 ppb
2018-12-285802-902-0615ND
2019-02-125802-901-13304.60 ppb
2019-02-125802-903-13003.60 ppb
2019-03-255802-902-0900ND
2019-04-035802-901-1310ND
2019-04-035802-903-1330ND
2019-04-035802-902-1300ND
2019-05-205802-901-09006.40 ppb
2019-05-205802-902-08204.30 ppb
2019-06-135802-901-1230ND
2019-06-135802-902-1200ND
2019-07-165802-903-1045ND
2019-07-165802-902-1030ND
2019-08-285802-903-10001.10 ppb
2019-08-285802-901-10151.80 ppb
2019-08-285802-902-10251.10 ppb
2019-09-265802-903-0945ND
2019-09-265802-901-1000ND
2019-09-265802-902-1015ND
2019-10-225802-903-073010.00 ppb
2019-10-225802-901-091013.0 ppb
2019-10-225802-902-074010.00 ppb
2019-11-255802-903-08105.30 ppb
2019-11-255802-901-08258.00 ppb
2019-11-255802-902-08005.10 ppb
2019-12-195802-902-07450.740 ppb
2019-12-195802-901-08550.710 ppb