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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Riverside Highland Water Company

Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids 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

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.438 ppb81ND - 3.50 ppb
20150.589 ppb92ND - 2.90 ppb
20160.125 ppb161ND - 2.00 ppb
2017ND120ND
2018ND120ND
2019ND150ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-024790-604-1334ND
2014-07-024790-603-1300ND
2014-07-024790-602-13563.50 ppb
2014-07-024790-601-1314ND
2014-10-064790-604-1440ND
2014-10-064790-603-1419ND
2014-10-064790-602-1400ND
2014-10-064790-601-1320ND
2015-01-064790-601-09362.40 ppb
2015-01-064790-604-1013ND
2015-01-064790-603-0906ND
2015-01-064790-602-1036ND
2015-04-024790-601-0853ND
2015-10-024790-601-1221ND
2015-10-024790-604-12432.90 ppb
2015-10-024790-603-1319ND
2015-10-024790-602-1304ND
2016-01-054790-602-0814ND
2016-01-054790-603-0749ND
2016-01-054790-604-08392.00 ppb
2016-01-054790-601-0906ND
2016-04-054790-601-1053ND
2016-04-054790-602-1112ND
2016-04-054790-603-1245ND
2016-04-054790-604-1302ND
2016-07-074790-604-1034ND
2016-07-074790-603-1021ND
2016-07-074790-601-0950ND
2016-07-074790-602-1005ND
2016-10-054790-604-0955ND
2016-10-054790-601-1041ND
2016-10-054790-602-1009ND
2016-10-054790-603-0930ND
2017-04-054790-603-0813ND
2017-04-054790-601-0846ND
2017-04-054790-604-0901ND
2017-04-054790-602-0831ND
2017-07-055810-604-1055ND
2017-07-055810-603-0850ND
2017-07-055810-601-0955ND
2017-07-055810-602-1041ND
2017-10-045810-604-1058ND
2017-10-045810-603-1012ND
2017-10-045810-601-0937ND
2017-10-045810-602-0955ND
2018-01-055810-603-0946ND
2018-01-055810-601-1039ND
2018-01-055810-604-1231ND
2018-01-105810-602-0946ND
2018-07-104790-603-1010ND
2018-07-104790-601-1236ND
2018-07-104790-602-1041ND
2018-07-104790-604-1300ND
2018-10-094790-601-1019ND
2018-10-094790-603-1057ND
2018-10-094790-602-1036ND
2018-10-094790-604-0956ND
2019-01-034790-603-1055ND
2019-01-034790-601-1010ND
2019-01-034790-602-1033ND
2019-04-084790-601-1416ND
2019-04-084790-604-1456ND
2019-04-084790-602-1348ND
2019-04-084790-603-1309ND
2019-07-034790-604-1441ND
2019-07-034790-602-1339ND
2019-07-034790-603-1310ND
2019-07-034790-601-1353ND
2019-10-024790-604-1246ND
2019-10-024790-602-1000ND
2019-10-024790-601-1024ND
2019-10-024790-603-0931ND