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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Oak Park Water Service

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

 

100

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND200ND
2016ND160ND
2017ND160ND
2018ND160ND
20190.419 ppb161ND - 6.70 ppb

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
2014-01-079588-004-0809ND
2014-01-079588-002-0856ND
2014-01-079588-003-0823ND
2014-01-079588-005-0835ND
2014-04-019588-005-0842ND
2014-04-019588-004-0742ND
2014-04-019588-003-0828ND
2014-04-019588-002-0812ND
2014-07-089588-005-0825ND
2014-07-089588-004-0725ND
2014-07-089588-003-0805ND
2014-07-089588-002-0750ND
2014-10-079588-004-0818ND
2014-10-079588-003-0754ND
2014-10-079588-005-0810ND
2014-10-079588-002-0742ND
2015-01-079588-005-0945ND
2015-01-079588-004-1035ND
2015-01-079588-003-0925ND
2015-01-079588-002-0900ND
2015-04-079588-005-1048ND
2015-04-079588-004-1015ND
2015-04-079588-002-0845ND
2015-04-079588-003-1048ND
2015-07-079588-003-1357ND
2015-07-079588-002-1443ND
2015-07-079588-005-1410ND
2015-07-079588-004-1346ND
2015-10-069588-003-0950ND
2015-10-069588-002-1035ND
2015-10-069588-005-0930ND
2015-10-069588-004-1145ND
2015-12-019588-003-1036ND
2015-12-019588-002-0908ND
2015-12-019588-005-1051ND
2015-12-019588-004-1124ND
2016-01-059588-003-0900ND
2016-01-059588-002-0920ND
2016-01-059588-005-1000ND
2016-01-059588-004-0840ND
2016-04-059588-003-1230ND
2016-04-059588-002-1215ND
2016-04-059588-005-1245ND
2016-04-059588-004-1155ND
2016-07-059588-002-1155ND
2016-07-059588-004-1047ND
2016-07-059588-005-1255ND
2016-07-059588-003-1240ND
2016-10-049588-003-0950ND
2016-10-049588-002-0925ND
2016-10-049588-004-0900ND
2016-10-049588-005-1010ND
2017-01-039588-005-1118ND
2017-01-039588-002-0949ND
2017-01-039588-003-1021ND
2017-01-039588-004-1052ND
2017-04-049588-005-1325ND
2017-04-049588-003-1310ND
2017-04-049588-002-1245ND
2017-04-049588-004-1155ND
2017-07-119588-005-0907ND
2017-07-119588-002-1019ND
2017-07-119588-004-0835ND
2017-07-119588-003-0920ND
2017-10-039588-004-1020ND
2017-10-039588-005-1103ND
2017-10-039588-002-1152ND
2017-10-039588-003-1048ND
2018-01-039588-004-1120ND
2018-01-039588-005-1152ND
2018-01-039588-002-1237ND
2018-01-039588-003-1135ND
2018-04-119588-005-0956ND
2018-04-119588-002-1030ND
2018-04-119588-003-1010ND
2018-04-119588-004-0930ND
2018-07-109588-004-1059ND
2018-07-109588-005-0930ND
2018-07-109588-003-1029ND
2018-07-109588-002-1007ND
2018-10-029588-005-1540ND
2018-10-029588-004-1540ND
2018-10-029588-003-1540ND
2018-10-029588-002-1540ND
2019-01-089588-005-08336.70 ppb
2019-01-089588-002-0939ND
2019-01-089588-003-0851ND
2019-01-089588-004-1035ND
2019-04-099588-002-0836ND
2019-04-099588-004-1119ND
2019-04-099588-005-1004ND
2019-04-099588-003-0927ND
2019-07-099588-004-1035ND
2019-07-099588-002-0850ND
2019-07-099588-005-0955ND
2019-07-099588-003-0930ND
2019-10-089588-004-0000ND
2019-10-089588-003-0000ND
2019-10-089588-002-0000ND
2019-10-089588-005-0000ND