Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Bromoform

City of Delano

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

 

152

Samples

0

Samples exceeding legal limit (MCL)

83

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.36 ppb1813ND - 7.10 ppb
20152.46 ppb2013ND - 6.50 ppb
20162.84 ppb1814ND - 8.70 ppb
20172.77 ppb3213ND - 20.0 ppb
20182.59 ppb3414ND - 23.0 ppb
20194.03 ppb3016ND - 16.0 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
2014-01-065810-900-10402.30 ppb
2014-01-065810-901-11003.20 ppb
2014-01-065810-902-1015ND
2014-01-065810-903-09155.90 ppb
2014-01-145810-042-0825ND
2014-04-075810-900-08452.30 ppb
2014-04-075810-901-08354.30 ppb
2014-04-075810-902-0900ND
2014-04-075810-903-08102.90 ppb
2014-04-295810-042-0745ND
2014-07-075810-900-11157.10 ppb
2014-07-075810-901-12002.60 ppb
2014-07-075810-902-11402.10 ppb
2014-07-075810-903-10453.20 ppb
2014-10-095810-900-15002.40 ppb
2014-10-095810-901-14101.60 ppb
2014-10-095810-902-1520ND
2014-10-095810-903-15452.60 ppb
2015-01-055810-900-11301.90 ppb
2015-01-055810-901-10301.60 ppb
2015-01-055810-902-1100ND
2015-01-055810-903-13003.50 ppb
2015-03-175810-047-1030ND
2015-04-065810-900-14103.10 ppb
2015-04-065810-901-11305.30 ppb
2015-04-065810-902-1345ND
2015-04-065810-903-13153.30 ppb
2015-07-065810-900-10152.90 ppb
2015-07-065810-901-09205.40 ppb
2015-07-065810-902-09503.10 ppb
2015-07-065810-903-08523.00 ppb
2015-07-215810-047-0810ND
2015-09-015810-047-0830ND
2015-10-065810-900-09005.70 ppb
2015-10-065810-901-09206.50 ppb
2015-10-065810-902-0845ND
2015-10-065810-903-09353.90 ppb
2015-10-275810-047-1015ND
2016-01-055810-900-08302.50 ppb
2016-01-055810-901-08102.70 ppb
2016-01-055810-902-08451.60 ppb
2016-01-055810-903-07453.00 ppb
2016-04-055810-900-10001.30 ppb
2016-04-055810-901-10303.70 ppb
2016-04-055810-902-09154.70 ppb
2016-04-055810-903-08258.70 ppb
2016-07-065810-900-12403.00 ppb
2016-07-065810-901-13002.30 ppb
2016-07-065810-902-1215ND
2016-07-065810-903-13203.10 ppb
2016-10-045810-900-10354.40 ppb
2016-10-045810-901-10202.40 ppb
2016-10-045810-902-1050ND
2016-10-045810-903-11307.70 ppb
2016-12-135810-054-0920ND
2016-12-135810-055-0900ND
2017-01-035810-900-09083.50 ppb
2017-01-035810-901-10123.20 ppb
2017-01-035810-902-0946ND
2017-01-035810-903-09293.90 ppb
2017-01-105810-054-0950ND
2017-01-105810-055-1010ND
2017-02-075810-054-1045ND
2017-02-075810-055-1115ND
2017-03-145810-054-1005ND
2017-03-145810-055-1020ND
2017-04-045810-900-09153.70 ppb
2017-04-045810-901-10004.30 ppb
2017-04-045810-902-0935ND
2017-04-045810-903-10407.60 ppb
2017-04-115810-054-1000ND
2017-04-115810-055-1030ND
2017-05-185810-054-0930ND
2017-05-185810-055-0945ND
2017-06-135810-054-0940ND
2017-06-135810-055-0948ND
2017-07-035810-900-11005.10 ppb
2017-07-035810-901-08156.40 ppb
2017-07-035810-902-10253.70 ppb
2017-07-035810-903-080018.0 ppb
2017-07-115810-054-1045ND
2017-07-115810-055-1100ND
2017-08-155810-054-0945ND
2017-08-155810-055-0955ND
2017-10-035810-900-09005.00 ppb
2017-10-035810-901-10004.20 ppb
2017-10-035810-902-1045ND
2017-10-035810-903-080020.0 ppb
2018-01-035810-900-09421.90 ppb
2018-01-035810-901-10352.20 ppb
2018-01-035810-902-1010ND
2018-01-035810-903-111511.0 ppb
2018-02-215810-054-0815ND
2018-02-215810-055-0835ND
2018-03-135810-054-0850ND
2018-03-135810-055-0841ND
2018-04-035810-900-10301.80 ppb
2018-04-035810-901-11001.40 ppb
2018-04-035810-902-0940ND
2018-04-035810-903-11305.30 ppb
2018-04-115810-054-0950ND
2018-04-115810-055-1000ND
2018-05-145810-054-1107ND
2018-05-145810-055-1130ND
2018-06-195810-054-0753ND
2018-06-265810-055-1115ND
2018-07-035810-900-10454.00 ppb
2018-07-035810-901-11201.90 ppb
2018-07-035810-902-1100ND
2018-07-035810-903-113023.0 ppb
2018-07-175810-054-09351.000 ppb
2018-07-175810-055-0950ND
2018-08-145810-054-1010ND
2018-08-145810-055-1000ND
2018-09-115810-054-1100ND
2018-09-115810-055-1040ND
2018-10-025810-900-09405.50 ppb
2018-10-025810-901-10501.10 ppb
2018-10-025810-902-100010.00 ppb
2018-10-025810-903-085018.0 ppb
2018-10-165810-054-1015ND
2018-10-165810-055-1025ND
2019-01-025810-900-11052.00 ppb
2019-01-025810-901-10201.000 ppb
2019-01-025810-902-10503.80 ppb
2019-01-025810-903-095015.0 ppb
2019-01-225810-054-1115ND
2019-01-225810-055-1100ND
2019-02-125810-054-1050ND
2019-02-125810-055-1040ND
2019-03-125810-054-1045ND
2019-03-125810-054-1100ND
2019-04-025810-900-10203.30 ppb
2019-04-025810-901-10452.10 ppb
2019-04-025810-902-10104.40 ppb
2019-04-025810-903-11308.60 ppb
2019-07-025810-900-10358.00 ppb
2019-07-025810-901-11151.70 ppb
2019-07-025810-902-105512.0 ppb
2019-07-025810-903-101512.0 ppb
2019-08-085810-054-0830ND
2019-08-085810-055-0815ND
2019-09-035810-054-0943ND
2019-09-035810-055-0929ND
2019-10-015810-054-1110ND
2019-10-015810-055-1100ND
2019-10-015810-900-10408.90 ppb
2019-10-015810-901-095011.0 ppb
2019-10-015810-902-101511.0 ppb
2019-10-015810-903-093016.0 ppb
2019-12-105810-054-1110ND
2019-12-105810-055-1100ND