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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

Old North Utilities Services/Ft. Bragg

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

 

193

Samples

0

Samples exceeding legal limit (MCL)

116

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.99 ppb3216ND - 8.00 ppb
20150.983 ppb3317ND - 3.10 ppb
20161.24 ppb3221ND - 3.50 ppb
201711.0 ppb3227ND - 32.0 ppb
20181.20 ppb3221ND - 6.60 ppb
20192.26 ppb3214ND - 8.90 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
2014-02-052969284ND
2014-02-052969287ND
2014-02-052969290ND
2014-02-052969293ND
2014-02-052969296ND
2014-02-052969299ND
2014-02-052969302ND
2014-02-052969305ND
2014-05-053023366ND
2014-05-053021541-42ND
2014-05-053021537-38ND
2014-05-053021742ND
2014-05-053021745ND
2014-05-053021748ND
2014-05-053021754ND
2014-05-053021757ND
2014-08-0430783771.40 ppb
2014-08-0430783831.40 ppb
2014-08-0430783861.90 ppb
2014-08-0430783891.40 ppb
2014-08-0430783921.20 ppb
2014-08-0430783711.30 ppb
2014-08-0430783744.80 ppb
2014-08-0430783801.20 ppb
2014-11-03141101695.00 ppb
2014-11-03141101705.00 ppb
2014-11-03141101757.00 ppb
2014-11-03141101765.00 ppb
2014-11-03141101776.00 ppb
2014-11-03141101786.00 ppb
2014-11-03141101747.00 ppb
2014-11-03141101738.00 ppb
2015-02-091.50 ppb
2015-02-091.80 ppb
2015-02-091.30 ppb
2015-02-090.740 ppb
2015-02-091.50 ppb
2015-02-091.000 ppb
2015-02-091.40 ppb
2015-02-09ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-08-032.40 ppb
2015-08-032.30 ppb
2015-08-033.10 ppb
2015-08-031.80 ppb
2015-08-032.80 ppb
2015-08-032.40 ppb
2015-08-031.60 ppb
2015-08-032.90 ppb
2015-11-02ND
2015-11-02ND
2015-11-02ND
2015-11-02ND
2015-11-02ND
2015-11-02ND
2015-11-022.80 ppb
2015-11-021.10 ppb
2016-02-0116020327-001ND
2016-02-0116020328-001ND
2016-02-0116020323-001ND
2016-02-0116020324-001ND
2016-02-0116020325-001ND
2016-02-0116020326-001ND
2016-02-0116020322-001ND
2016-02-0216020320-001ND
2016-05-0234404631.40 ppb
2016-05-0234404641.60 ppb
2016-05-023440465ND
2016-05-0234404661.10 ppb
2016-05-0234404671.40 ppb
2016-05-0234404681.50 ppb
2016-05-0234404691.30 ppb
2016-05-0234404701.30 ppb
2016-08-0135146622.50 ppb
2016-08-0135146632.30 ppb
2016-08-0135146653.50 ppb
2016-08-0235146642.80 ppb
2016-08-0235146661.90 ppb
2016-08-0235146672.90 ppb
2016-08-0235146683.10 ppb
2016-08-0235146692.60 ppb
2016-11-0835833591.70 ppb
2016-11-0835833601.30 ppb
2016-11-0835833611.20 ppb
2016-11-0835833621.60 ppb
2016-11-083583363ND
2016-11-0835833641.40 ppb
2016-11-0835833651.30 ppb
2016-11-083583366ND
2017-02-0836359771.20 ppb
2017-02-0836359781.50 ppb
2017-02-0836359791.90 ppb
2017-02-0836359801.60 ppb
2017-02-0936359812.30 ppb
2017-02-0936359822.20 ppb
2017-02-0936359831.60 ppb
2017-02-0936359841.30 ppb
2017-05-0136885591.10 ppb
2017-05-013688560ND
2017-05-013688561ND
2017-05-0136885672.00 ppb
2017-05-0136885691.20 ppb
2017-05-013688571ND
2017-05-023688565ND
2017-05-023688566ND
2017-08-28376794813.0 ppb
2017-08-28376795014.0 ppb
2017-08-28376795215.0 ppb
2017-08-28376795417.0 ppb
2017-08-2837679562.70 ppb
2017-08-28376795815.0 ppb
2017-08-28376796018.0 ppb
2017-08-28376796211.0 ppb
2017-11-08381762930.0 ppb
2017-11-08381763123.0 ppb
2017-11-08381763332.0 ppb
2017-11-08381763531.0 ppb
2017-11-08381765230.0 ppb
2017-11-08381763832.0 ppb
2017-11-08381764024.0 ppb
2017-11-16382322526.0 ppb
2018-02-083868633 ND
2018-02-083868635 ND
2018-02-083868637 ND
2018-02-083868639 1.50 ppb
2018-02-083868641 1.50 ppb
2018-02-083868643 ND
2018-02-083868645 ND
2018-02-083868647 6.60 ppb
2018-05-073933436 1.30 ppb
2018-05-073933438 ND
2018-05-073933440 ND
2018-05-083933442 ND
2018-05-083933444 1.40 ppb
2018-05-083933446 ND
2018-05-083933448 1.80 ppb
2018-05-153940683 1.70 ppb
2018-08-094017794 1.50 ppb
2018-08-204034181 1.000 ppb
2018-08-214034175 2.80 ppb
2018-08-214034176 1.60 ppb
2018-08-214034177 2.40 ppb
2018-08-214034179 2.20 ppb
2018-08-214034180 2.70 ppb
2018-08-234034178 ND
2018-11-074116581 1.30 ppb
2018-11-074116585 1.30 ppb
2018-11-074116587 1.20 ppb
2018-11-074116589 ND
2018-11-084116583 1.30 ppb
2018-11-084116591 1.000 ppb
2018-11-084116593 1.000 ppb
2018-11-084116595 1.20 ppb
2019-02-064192179-1 ND
2019-02-064192181-1 ND
2019-02-064192185-1 ND
2019-02-064192187-1 ND
2019-02-064192189-1 ND
2019-02-064192191-1 ND
2019-02-064192193-1 ND
2019-02-074192195-1 ND
2019-05-15190924-01 ND
2019-05-15190924-03 ND
2019-05-15190924-04 ND
2019-05-15190924-05 ND
2019-05-15190924-06 ND
2019-05-15190924-07 ND
2019-05-15190924-08 ND
2019-05-15190924-09 ND
2019-08-20191592-01 6.10 ppb
2019-08-20191592-04 8.70 ppb
2019-08-20191592-05 7.40 ppb
2019-08-20191592-07 8.90 ppb
2019-08-21191592-02 6.50 ppb
2019-08-21191592-06 7.60 ppb
2019-08-21191592-08 8.10 ppb
2019-08-22191598-01 5.90 ppb
2019-11-19192264-01 ND
2019-11-21192295-01 2.20 ppb
2019-11-25192330-01 1.90 ppb
2019-11-25192330-02 1.90 ppb
2019-11-25192330-03 2.60 ppb
2019-11-25192330-04 1.90 ppb
2019-11-25192330-05 ND
2019-11-25192330-06 2.70 ppb