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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Victorville Water District

Chloroform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Chloroform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Read More.

In addition to tap water disinfection, chloroform pollution in the environment also comes from industrial discharges from pulp and paper mills, and from urban wastewater effluent. Human studies show that chloroform damages the kidneys, liver and central nervous system. In animals, chloroform causes infertility, birth defects and cancer.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

176

Samples

0

Samples exceeding legal limit (MCL)

24

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND180ND
20150.108 ppb446ND - 1.80 ppb
20160.125 ppb296ND - 0.830 ppb
20170.535 ppb316ND - 3.70 ppb
20180.225 ppb324ND - 1.80 ppb
20190.155 ppb222ND - 2.30 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.4 ppb

The EWG Health Guideline of 0.4 ppb for chloroform 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
2014-04-084790-024-0900ND
2014-04-084790-031-1000ND
2014-04-174790-029-1010ND
2014-04-174790-034-1130ND
2014-04-304790-018-0800ND
2014-04-304790-039-1040ND
2014-05-134790-601-1100ND
2014-05-134790-602-1000ND
2014-05-134790-603-0900ND
2014-05-134790-604-0830ND
2014-05-134790-605-1030ND
2014-05-134790-606-0930ND
2014-07-154790-601-1010ND
2014-07-154790-602-1040ND
2014-07-154790-603-1120ND
2014-07-154790-604-1200ND
2014-07-154790-605-1220ND
2014-07-154790-606-1140ND
2015-01-294790-601-0830ND
2015-01-294790-602-0910ND
2015-01-294790-603-0930ND
2015-01-294790-604-0950ND
2015-01-294790-605-0850ND
2015-01-294790-606-0940ND
2015-02-114790-029-0830ND
2015-02-114790-031-0930ND
2015-02-114790-034-0900ND
2015-04-224790-601-1030ND
2015-04-224790-602-1000ND
2015-04-224790-603-1100ND
2015-04-224790-604-1030ND
2015-04-224790-605-1000ND
2015-04-224790-606-0930ND
2015-06-234790-024-0730ND
2015-07-214790-017-1000ND
2015-07-214790-601-0915ND
2015-07-214790-602-08151.80 ppb
2015-07-214790-603-07150.620 ppb
2015-07-214790-605-08400.610 ppb
2015-07-214790-606-07400.550 ppb
2015-07-224790-014-1110ND
2015-07-224790-015-1015ND
2015-07-224790-016-0945ND
2015-07-224790-024-0900ND
2015-07-224790-028-0845ND
2015-07-224790-029-1000ND
2015-07-224790-031-1030ND
2015-07-294790-020-0830ND
2015-07-294790-025-0930ND
2015-07-294790-057-0700ND
2015-08-184790-604-10000.550 ppb
2015-10-144790-007-0700ND
2015-10-144790-024-1000ND
2015-10-144790-029-0900ND
2015-10-144790-034-0800ND
2015-10-204790-601-1030ND
2015-10-204790-602-0930ND
2015-10-204790-603-09000.610 ppb
2015-10-204790-604-0830ND
2015-10-204790-605-1000ND
2015-10-204790-606-0800ND
2015-10-214790-034-0745ND
2016-01-124790-031-0930ND
2016-01-124790-601-0915ND
2016-01-124790-602-0945ND
2016-01-124790-603-10450.520 ppb
2016-01-124790-604-1015ND
2016-01-124790-605-0845ND
2016-01-124790-606-1100ND
2016-02-033761-029-1000ND
2016-04-124790-601-1030ND
2016-04-124790-602-09200.540 ppb
2016-04-124790-603-12300.670 ppb
2016-04-124790-604-1315ND
2016-04-124790-605-0950ND
2016-04-124790-606-1200ND
2016-07-194790-601-0850ND
2016-07-194790-602-0915ND
2016-07-194790-603-13450.830 ppb
2016-07-194790-604-1425ND
2016-07-194790-605-08200.500 ppb
2016-07-194790-606-1320ND
2016-07-204790-023-0700ND
2016-08-164790-030-0820ND
2016-08-164790-032-0850ND
2016-10-064790-601-0615ND
2016-10-064790-602-0730ND
2016-10-064790-603-1000ND
2016-10-064790-604-0900ND
2016-10-064790-605-06550.560 ppb
2016-10-064790-606-1100ND
2017-01-114790-029-0630ND
2017-01-114790-031-0730ND
2017-01-314790-601-0630ND
2017-01-314790-602-0751ND
2017-01-314790-603-1155ND
2017-01-314790-604-08451.70 ppb
2017-01-314790-605-0705ND
2017-01-314790-606-1055ND
2017-02-024790-061-0000ND
2017-04-134790-601-12052.80 ppb
2017-04-134790-602-10452.80 ppb
2017-04-134790-603-0915ND
2017-04-134790-604-09502.80 ppb
2017-04-134790-605-13152.80 ppb
2017-04-134790-606-0825ND
2017-07-054790-061-1050ND
2017-07-134790-601-0900ND
2017-07-134790-602-1000ND
2017-07-134790-603-1100ND
2017-07-134790-604-12003.70 ppb
2017-07-134790-605-1300ND
2017-07-134790-606-1400ND
2017-07-174790-019-0615ND
2017-07-254790-029-0830ND
2017-08-304790-031-1101ND
2017-11-303761-601-0615ND
2017-11-303761-602-0800ND
2017-11-303761-603-1045ND
2017-11-303761-604-0855ND
2017-11-303761-605-0710ND
2017-11-303761-606-0950ND
2018-03-289590-601-0915ND
2018-03-289590-602-1110ND
2018-03-289590-603-0214ND
2018-03-289590-604-0020ND
2018-03-289590-605-1020ND
2018-03-289590-606-0108ND
2018-06-259590-048-1000ND
2018-06-259590-051-1000ND
2018-07-099590-015-0930ND
2018-07-099590-016-0930ND
2018-07-099590-051-1200ND
2018-07-099590-052-1200ND
2018-07-159590-035-1130ND
2018-07-169590-023-0900ND
2018-07-219590-031-1230ND
2018-07-229590-020-1230ND
2018-07-239590-025-1150ND
2018-07-239590-030-1345ND
2018-07-309590-014-1130ND
2018-07-309590-017-1300ND
2018-08-203761-044-0600ND
2018-08-203761-046-0725ND
2018-08-203761-047-0710ND
2018-08-203761-048-0650ND
2018-08-203761-049-0745ND
2018-08-313761-601-0600ND
2018-08-313761-602-07101.80 ppb
2018-08-313761-603-08261.80 ppb
2018-08-313761-604-09481.80 ppb
2018-08-313761-605-1120ND
2018-08-313761-606-13001.80 ppb
2018-10-033761-048-1200ND
2019-03-294790-601-0555ND
2019-03-294790-602-0740ND
2019-03-294790-603-0945ND
2019-03-294790-604-08551.10 ppb
2019-03-294790-605-0645ND
2019-03-294790-606-1050ND
2019-04-014790-017-1030ND
2019-04-014790-019-1000ND
2019-04-054790-028-0700ND
2019-07-303761-027-0720ND
2019-07-313761-025-1400ND
2019-07-313761-031-1215ND
2019-10-164790-012-1030ND
2019-10-313761-601-0615ND
2019-10-313761-602-1030ND
2019-10-313761-603-1300ND
2019-10-313761-604-10002.30 ppb
2019-10-313761-605-0830ND
2019-10-313761-606-1430ND
2019-12-204790-033-0700ND
2019-12-204790-037-1000ND
2019-12-204790-038-1100ND