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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Ventura Waterworks District No. 8 - Simi Valley

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

 

192

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
2014ND320ND
2015ND320ND
2016ND320ND
2017ND320ND
20180.388 ppb322ND - 9.30 ppb
2019ND320ND

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
2014-01-029588-014-0949ND
2014-01-029588-015-1105ND
2014-01-029588-016-1118ND
2014-01-029588-017-0753ND
2014-01-029588-018-0809ND
2014-01-029588-019-0834ND
2014-01-029588-020-0820ND
2014-01-029588-021-0926ND
2014-04-019588-014-0949ND
2014-04-019588-015-1035ND
2014-04-019588-016-1056ND
2014-04-019588-017-0800ND
2014-04-019588-018-0818ND
2014-04-019588-019-0905ND
2014-04-019588-020-0852ND
2014-04-019588-021-0926ND
2014-07-019588-014-1020ND
2014-07-019588-015-1050ND
2014-07-019588-016-0940ND
2014-07-019588-017-0850ND
2014-07-019588-018-0910ND
2014-07-019588-019-0930ND
2014-07-019588-020-0920ND
2014-07-019588-021-1000ND
2014-09-239588-014-0825ND
2014-09-239588-015-0850ND
2014-09-239588-016-0842ND
2014-09-239588-017-0743ND
2014-09-239588-018-0759ND
2014-09-239588-019-0828ND
2014-09-239588-020-0815ND
2014-09-239588-021-0805ND
2015-01-069588-014-0925ND
2015-01-069588-015-1033ND
2015-01-069588-016-1020ND
2015-01-069588-017-0815ND
2015-01-069588-018-0830ND
2015-01-069588-019-0855ND
2015-01-069588-020-0845ND
2015-01-069588-021-0912ND
2015-04-079588-014-1418ND
2015-04-079588-015-1455ND
2015-04-079588-016-1515ND
2015-04-079588-017-1310ND
2015-04-079588-018-1320ND
2015-04-079588-019-1340ND
2015-04-079588-020-1332ND
2015-04-079588-021-1358ND
2015-07-079588-014-0925ND
2015-07-079588-015-0955ND
2015-07-079588-016-1010ND
2015-07-079588-017-0745ND
2015-07-079588-018-0800ND
2015-07-079588-019-0830ND
2015-07-079588-020-0815ND
2015-07-079588-021-0900ND
2015-10-069588-014-1043ND
2015-10-069588-015-1152ND
2015-10-069588-016-0952ND
2015-10-069588-017-0803ND
2015-10-069588-018-0818ND
2015-10-069588-019-0920ND
2015-10-069588-020-0855ND
2015-10-069588-021-1022ND
2016-01-059588-014-1020ND
2016-01-059588-015-1105ND
2016-01-059588-016-1115ND
2016-01-059588-017-0850ND
2016-01-059588-018-0910ND
2016-01-059588-019-0945ND
2016-01-059588-020-0933ND
2016-01-059588-021-1000ND
2016-04-059588-014-0920ND
2016-04-059588-015-1000ND
2016-04-059588-016-0945ND
2016-04-059588-017-0805ND
2016-04-059588-018-0820ND
2016-04-059588-019-0840ND
2016-04-059588-020-0830ND
2016-04-059588-021-0905ND
2016-07-059588-014-0922ND
2016-07-059588-015-1030ND
2016-07-059588-016-0930ND
2016-07-059588-017-0755ND
2016-07-059588-018-0818ND
2016-07-059588-019-0844ND
2016-07-059588-020-0833ND
2016-07-059588-021-0905ND
2016-10-069588-014-1010ND
2016-10-069588-015-1030ND
2016-10-069588-016-1045ND
2016-10-069588-017-0846ND
2016-10-069588-018-0858ND
2016-10-069588-019-0930ND
2016-10-069588-020-0920ND
2016-10-069588-021-0950ND
2017-01-049588-014-1000ND
2017-01-049588-015-1024ND
2017-01-049588-016-1048ND
2017-01-049588-017-0822ND
2017-01-049588-018-0850ND
2017-01-049588-019-0914ND
2017-01-049588-020-0900ND
2017-01-049588-021-0941ND
2017-04-049588-014-0937ND
2017-04-049588-015-1014ND
2017-04-049588-016-1053ND
2017-04-049588-017-1053ND
2017-04-049588-018-0832ND
2017-04-049588-019-0858ND
2017-04-049588-020-0848ND
2017-04-049588-021-0919ND
2017-07-059588-014-1035ND
2017-07-059588-015-1103ND
2017-07-059588-016-1120ND
2017-07-059588-017-0830ND
2017-07-059588-018-0854ND
2017-07-059588-019-0930ND
2017-07-059588-020-0915ND
2017-07-059588-021-1010ND
2017-10-049588-014-1514ND
2017-10-049588-015-1544ND
2017-10-049588-016-1555ND
2017-10-049588-017-1350ND
2017-10-049588-018-1407ND
2017-10-049588-019-1433ND
2017-10-049588-020-1420ND
2017-10-049588-021-1456ND
2018-01-109588-014-1135ND
2018-01-109588-015-1310ND
2018-01-109588-016-1245ND
2018-01-109588-017-0823ND
2018-01-109588-018-0854ND
2018-01-109588-019-1000ND
2018-01-109588-020-0930ND
2018-01-109588-021-1055ND
2018-04-049588-014-0856ND
2018-04-049588-015-0952ND
2018-04-049588-016-1035ND
2018-04-049588-017-11383.10 ppb
2018-04-049588-018-11239.30 ppb
2018-04-049588-019-1049ND
2018-04-049588-020-1101ND
2018-04-049588-021-0931ND
2018-07-039588-014-0930ND
2018-07-039588-015-1000ND
2018-07-039588-016-1015ND
2018-07-039588-017-0815ND
2018-07-039588-018-0830ND
2018-07-039588-019-0855ND
2018-07-039588-020-0840ND
2018-07-039588-021-0915ND
2018-10-049588-014-1038ND
2018-10-049588-015-1121ND
2018-10-049588-016-1200ND
2018-10-049588-017-0800ND
2018-10-049588-018-0820ND
2018-10-049588-019-0915ND
2018-10-049588-020-0845ND
2018-10-049588-021-0940ND
2019-01-029588-014-1001ND
2019-01-029588-015-1042ND
2019-01-029588-016-1033ND
2019-01-029588-017-0900ND
2019-01-029588-018-0915ND
2019-01-029588-019-0935ND
2019-01-029588-020-0925ND
2019-01-029588-021-0955ND
2019-04-049588-014-1050ND
2019-04-049588-015-1120ND
2019-04-049588-016-1140ND
2019-04-049588-017-0830ND
2019-04-049588-018-0915ND
2019-04-049588-019-1000ND
2019-04-049588-020-0940ND
2019-04-049588-021-1030ND
2019-07-119588-014-1112ND
2019-07-119588-015-1140ND
2019-07-119588-016-1155ND
2019-07-119588-017-0948ND
2019-07-119588-018-1015ND
2019-07-119588-019-1035ND
2019-07-119588-020-1022ND
2019-07-119588-021-1052ND
2019-10-029588-014-1045ND
2019-10-029588-015-1115ND
2019-10-029588-016-1140ND
2019-10-029588-017-0827ND
2019-10-029588-018-0850ND
2019-10-029588-019-0945ND
2019-10-029588-020-0915ND
2019-10-029588-021-1015ND