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EWG's Tap Water Database — 2021 UPDATE

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Chloroform

Arvin Community Services 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

 

113

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND180ND
2015ND220ND
2016ND180ND
2017ND160ND
2018ND210ND
2019ND180ND

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
2014-01-075806-009-1021ND
2014-01-075806-011-1023ND
2014-01-085806-900-0942ND
2014-01-085806-901-0833ND
2014-01-085806-902-0902ND
2014-01-085806-903-0915ND
2014-04-015806-900-1040ND
2014-04-015806-901-0955ND
2014-04-015806-902-1025ND
2014-04-015806-903-1100ND
2014-07-085806-900-1136ND
2014-07-085806-901-1156ND
2014-07-085806-902-1144ND
2014-07-085806-903-1124ND
2014-10-075806-900-0931ND
2014-10-075806-901-1025ND
2014-10-075806-902-1007ND
2014-10-075806-903-0945ND
2015-01-055806-900-1144ND
2015-01-055806-901-1022ND
2015-01-055806-902-1153ND
2015-01-055806-903-1155ND
2015-05-055806-900-0950ND
2015-05-055806-901-0915ND
2015-05-055806-902-0930ND
2015-05-055806-903-0845ND
2015-07-075806-900-0908ND
2015-07-075806-901-0953ND
2015-07-075806-902-0931ND
2015-07-075806-903-1019ND
2015-08-045806-001-1015ND
2015-08-045806-005-0921ND
2015-08-045806-006-0949ND
2015-08-045806-016-1036ND
2015-08-045806-018-1051ND
2015-09-105806-009-0936ND
2015-10-015806-900-0835ND
2015-10-015806-901-0911ND
2015-10-015806-902-0859ND
2015-10-015806-903-0926ND
2016-01-065806-900-0916ND
2016-01-065806-901-0840ND
2016-01-065806-902-0823ND
2016-01-065806-903-0900ND
2016-04-055806-900-1137ND
2016-04-055806-901-1100ND
2016-04-055806-902-1120ND
2016-04-055806-903-1150ND
2016-07-135806-900-1153ND
2016-07-135806-901-1107ND
2016-07-135806-902-1207ND
2016-07-135806-903-1146ND
2016-10-135806-020-1009ND
2016-10-135806-022-1041ND
2016-10-135806-900-0833ND
2016-10-135806-901-0905ND
2016-10-135806-902-0846ND
2016-10-135806-903-0817ND
2017-01-105806-900-0957ND
2017-01-105806-901-0926ND
2017-01-105806-902-0947ND
2017-01-105806-903-1012ND
2017-05-095806-900-0950ND
2017-05-095806-901-1033ND
2017-05-095806-902-0940ND
2017-05-095806-903-1003ND
2017-07-115806-900-1030ND
2017-07-115806-901-1040ND
2017-07-115806-902-1023ND
2017-07-115806-903-1020ND
2017-10-105806-900-1145ND
2017-10-105806-901-1237ND
2017-10-105806-902-1217ND
2017-10-105806-903-1159ND
2018-01-035806-900-1008ND
2018-01-035806-901-1045ND
2018-01-035806-902-1122ND
2018-01-035806-903-1024ND
2018-03-135806-022-0900ND
2018-04-105806-900-1125ND
2018-04-105806-901-1052ND
2018-04-105806-902-1109ND
2018-04-105806-903-1142ND
2018-07-175806-009-0847ND
2018-07-175806-016-0744ND
2018-07-175806-018-0822ND
2018-07-175806-022-0928ND
2018-07-175806-900-0800ND
2018-07-175806-901-0835ND
2018-07-175806-902-0905ND
2018-07-175806-903-0925ND
2018-10-095806-900-1059ND
2018-10-095806-901-1028ND
2018-10-095806-902-1112ND
2018-10-095806-903-1042ND
2019-01-085806-900-0844ND
2019-01-085806-901-0819ND
2019-01-085806-902-0852ND
2019-01-085806-903-0856ND
2019-04-095806-900-1200ND
2019-04-095806-901-1134ND
2019-04-095806-902-1148ND
2019-04-095806-903-1208ND
2019-07-095806-900-0938ND
2019-07-095806-901-0907ND
2019-07-095806-902-0923ND
2019-07-095806-903-0958ND
2019-08-275806-020-0808ND
2019-08-275806-022-0825ND
2019-10-015806-900-1025ND
2019-10-015806-901-1054ND
2019-10-015806-902-1036ND
2019-10-015806-903-1017ND