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Monochloroacetic acid

City of Hollister

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

 

184

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND200ND
2019ND320ND
2020ND320ND
2021ND320ND
2022ND320ND
2023ND360ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a public health goal. This health guideline protects against change to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-08CA3510001_DST_804-201803081136ND
2018-03-08CA3510001_DST_802-201803081109ND
2018-03-08CA3510001_DST_803-201803081120ND
2018-03-08CA3510001_DST_801-201803081148ND
2018-06-07CA3510001_DST_803-201806070900ND
2018-06-07CA3510001_DST_801-201806070937ND
2018-06-07CA3510001_DST_802-201806070910ND
2018-06-07CA3510001_DST_804-201806070925ND
2018-09-06CA3510001_DST_801-201809061108ND
2018-09-06CA3510001_DST_804-201809061105ND
2018-09-06CA3510001_DST_802-201809061045ND
2018-09-06CA3510001_DST_803-201809061050ND
2018-12-06CA3510001_DST_801-201812061224ND
2018-12-06CA3510001_DST_802-201812061145ND
2018-12-06CA3510001_DST_803-201812061135ND
2018-12-06CA3510001_DST_806-201812061117ND
2018-12-06CA3510001_DST_808-201812061031ND
2018-12-06CA3510001_DST_804-201812061243ND
2018-12-06CA3510001_DST_805-201812061311ND
2018-12-06CA3510001_DST_809-201812061040ND
2019-03-14CA3510001_DST_809-201903141150ND
2019-03-14CA3510001_DST_802-201903141040ND
2019-03-14CA3510001_DST_801-201903141025ND
2019-03-14CA3510001_DST_803-201903141050ND
2019-03-14CA3510001_DST_805-201903141115ND
2019-03-14CA3510001_DST_808-201903141130ND
2019-03-14CA3510001_DST_804-201903141010ND
2019-03-14CA3510001_DST_806-201903141100ND
2019-06-06CA3510001_DST_801-201906060945ND
2019-06-06CA3510001_DST_804-201906060936ND
2019-06-06CA3510001_DST_802-201906060923ND
2019-06-06CA3510001_DST_805-201906060850ND
2019-06-06CA3510001_DST_808-201906060829ND
2019-06-06CA3510001_DST_810-201906060820ND
2019-06-06CA3510001_DST_803-201906060914ND
2019-06-06CA3510001_DST_806-201906060904ND
2019-09-10CA3510001_DST_801-201909101017ND
2019-09-10CA3510001_DST_803-201909101000ND
2019-09-10CA3510001_DST_806-201909101109ND
2019-09-10CA3510001_DST_810-201909101124ND
2019-09-10CA3510001_DST_805-201909101046ND
2019-09-10CA3510001_DST_808-201909101130ND
2019-09-10CA3510001_DST_802-201909101006ND
2019-09-10CA3510001_DST_804-201909101025ND
2019-12-05CA3510001_DST_805-201912051203ND
2019-12-05CA3510001_DST_806-201912051010ND
2019-12-05CA3510001_DST_801-201912051051ND
2019-12-05CA3510001_DST_803-201912051135ND
2019-12-05CA3510001_DST_808-201912050939ND
2019-12-05CA3510001_DST_802-201912051125ND
2019-12-05CA3510001_DST_804-201912051109ND
2019-12-05CA3510001_DST_810-201912050925ND
2020-03-12CA3510001_DST_801-202003120935ND
2020-03-12CA3510001_DST_803-202003120905ND
2020-03-12CA3510001_DST_802-202003120910ND
2020-03-12CA3510001_DST_806-202003120848ND
2020-03-12CA3510001_DST_810-202003120830ND
2020-03-12CA3510001_DST_804-202003120930ND
2020-03-12CA3510001_DST_805-202003120958ND
2020-03-12CA3510001_DST_808-202003120835ND
2020-06-01CA3510001_DST_806-202006011005ND
2020-06-01CA3510001_DST_810-202006011035ND
2020-06-01CA3510001_DST_805-202006011115ND
2020-06-01CA3510001_DST_808-202006011029ND
2020-06-01CA3510001_DST_801-202006010905ND
2020-06-01CA3510001_DST_802-202006010926ND
2020-06-01CA3510001_DST_803-202006010940ND
2020-06-01CA3510001_DST_804-202006010915ND
2020-09-03CA3510001_DST_803-202009030917ND
2020-09-03CA3510001_DST_806-202009030927ND
2020-09-03CA3510001_DST_804-202009030828ND
2020-09-03CA3510001_DST_810-202009030958ND
2020-09-03CA3510001_DST_802-202009030912ND
2020-09-03CA3510001_DST_808-202009031005ND
2020-09-03CA3510001_DST_801-202009030841ND
2020-09-03CA3510001_DST_805-202009030940ND
2020-12-10CA3510001_DST_802-202012100922ND
2020-12-10CA3510001_DST_804-202012100910ND
2020-12-10CA3510001_DST_808-202012100954ND
2020-12-10CA3510001_DST_810-202012100946ND
2020-12-10CA3510001_DST_806-202012101035ND
2020-12-10CA3510001_DST_803-202012100930ND
2020-12-10CA3510001_DST_805-202012101054ND
2020-12-10CA3510001_DST_801-202012100900ND
2021-03-04CA3510001_DST_802-202103040816ND
2021-03-04CA3510001_DST_805-202103041119ND
2021-03-04CA3510001_DST_803-202103040827ND
2021-03-04CA3510001_DST_806-202103040845ND
2021-03-04CA3510001_DST_801-202103040901ND
2021-03-04CA3510001_DST_804-202103040835ND
2021-03-04CA3510001_DST_808-202103040923ND
2021-03-04CA3510001_DST_810-202103040917ND
2021-06-10CA3510001_DST_806-202106100954ND
2021-06-10CA3510001_DST_804-202106100902ND
2021-06-10CA3510001_DST_805-202106101140ND
2021-06-10CA3510001_DST_810-202106101014ND
2021-06-10CA3510001_DST_801-202106100849ND
2021-06-10CA3510001_DST_802-202106100927ND
2021-06-10CA3510001_DST_803-202106100936ND
2021-06-10CA3510001_DST_808-202106101028ND
2021-09-09CA3510001_DST_808-202109091104ND
2021-09-09CA3510001_DST_810-202109091056ND
2021-09-09CA3510001_DST_801-202109090941ND
2021-09-09CA3510001_DST_802-202109091009ND
2021-09-09CA3510001_DST_803-202109091019ND
2021-09-09CA3510001_DST_804-202109090952ND
2021-09-09CA3510001_DST_805-202109091209ND
2021-09-09CA3510001_DST_806-202109091035ND
2021-12-16CA3510001_DST_801-202112160904ND
2021-12-16CA3510001_DST_802-202112160930ND
2021-12-16CA3510001_DST_810-202112161005ND
2021-12-16CA3510001_DST_803-202112160936ND
2021-12-16CA3510001_DST_804-202112160913ND
2021-12-16CA3510001_DST_805-202112161103ND
2021-12-16CA3510001_DST_808-202112161011ND
2021-12-16CA3510001_DST_806-202112160951ND
2022-03-10CA3510001_DST_805-202203101141ND
2022-03-10CA3510001_DST_802-202203101105ND
2022-03-10CA3510001_DST_803-202203101111ND
2022-03-10CA3510001_DST_806-202203101124ND
2022-03-10CA3510001_DST_808-202203100929ND
2022-03-10CA3510001_DST_810-202203100922ND
2022-03-10CA3510001_DST_801-202203101006ND
2022-03-10CA3510001_DST_804-202203101011ND
2022-06-01CA3510001_DST_802-202206010954ND
2022-06-01CA3510001_DST_806-202206011019ND
2022-06-01CA3510001_DST_808-202206010858ND
2022-06-01CA3510001_DST_801-202206010929ND
2022-06-01CA3510001_DST_805-202206011048ND
2022-06-01CA3510001_DST_803-202206010959ND
2022-06-01CA3510001_DST_804-202206010936ND
2022-06-01CA3510001_DST_810-202206010850ND
2022-09-07CA3510001_DST_803-202209071007ND
2022-09-07CA3510001_DST_810-202209070814ND
2022-09-07CA3510001_DST_802-202209070959ND
2022-09-07CA3510001_DST_804-202209070935ND
2022-09-07CA3510001_DST_808-202209070825ND
2022-09-07CA3510001_DST_801-202209070924ND
2022-09-07CA3510001_DST_806-202209071020ND
2022-09-07CA3510001_DST_805-202209071043ND
2022-12-08CA3510001_DST_801-202212080905ND
2022-12-08CA3510001_DST_803-202212080938ND
2022-12-08CA3510001_DST_805-202212081120ND
2022-12-08CA3510001_DST_802-202212080930ND
2022-12-08CA3510001_DST_806-202212080947ND
2022-12-08CA3510001_DST_808-202212081010ND
2022-12-08CA3510001_DST_810-202212081002ND
2022-12-08CA3510001_DST_804-202212080912ND
2023-03-08CA3510001_DST_802-202303080911ND
2023-03-08CA3510001_DST_804-202303080859ND
2023-03-08CA3510001_DST_805-202303080955ND
2023-03-08CA3510001_DST_808-202303080817ND
2023-03-08CA3510001_DST_801-202303080850ND
2023-03-08CA3510001_DST_803-202303080917ND
2023-03-08CA3510001_DST_806-202303080924ND
2023-03-08CA3510001_DST_810-202303080805ND
2023-06-08CA3510001_DST_803-202306080913ND
2023-06-08CA3510001_DST_805-202306081005ND
2023-06-08CA3510001_DST_808-202306080819ND
2023-06-08CA3510001_DST_802-202306080906ND
2023-06-08CA3510001_DST_806-202306080923ND
2023-06-08CA3510001_DST_810-202306080813ND
2023-06-08CA3510001_DST_801-202306080836ND
2023-06-08CA3510001_DST_804-202306080842ND
2023-08-30CA3510001_DST_803-202308301032ND
2023-08-30CA3510001_DST_804-202308300930ND
2023-08-30CA3510001_DST_810-202308300857ND
2023-08-30CA3510001_DST_801-202308300948ND
2023-08-30CA3510001_DST_808-202308300835ND
2023-08-30CA3510001_DST_802-202308301010ND
2023-08-30CA3510001_DST_806-202308301059ND
2023-09-06CA3510001_DST_803-202309061120ND
2023-09-06CA3510001_DST_804-202309061045ND
2023-09-06CA3510001_DST_806-202309061130ND
2023-09-06CA3510001_DST_801-202309061055ND
2023-09-06CA3510001_DST_802-202309061110ND
2023-09-06CA3510001_DST_805-202309061145ND
2023-09-06CA3510001_DST_808-202309061025ND
2023-09-06CA3510001_DST_810-202309061015ND
2023-12-27CA3510001_DST_810-202312270828ND
2023-12-27CA3510001_DST_802-202312271002ND
2023-12-27CA3510001_DST_803-202312271023ND
2023-12-27CA3510001_DST_806-202312271049ND
2023-12-27CA3510001_DST_804-202312270922ND