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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Vacaville

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

 

48

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND320ND
2019ND160ND

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
2018-02-215810-801-1235ND
2018-02-215810-808-1304ND
2018-02-215810-807-1329ND
2018-02-215810-802-1027ND
2018-02-215810-806-1207ND
2018-02-215810-805-1107ND
2018-02-215810-803-1145ND
2018-02-215810-804-1252ND
2018-05-165810-801-1000ND
2018-05-165810-808-1037ND
2018-05-165810-807-1059ND
2018-05-165810-806-0934ND
2018-05-165810-805-0850ND
2018-05-165810-804-1018ND
2018-05-165810-803-0914ND
2018-05-165810-802-0814ND
2018-08-155810-803-1027ND
2018-08-155810-808-1011ND
2018-08-155810-801-0943ND
2018-08-155810-804-0958ND
2018-08-155810-807-1043ND
2018-08-155810-806-0919ND
2018-08-155810-805-0859ND
2018-08-155810-802-0837ND
2018-11-145810-803-1043ND
2018-11-145810-808-1028ND
2018-11-145810-801-0955ND
2018-11-145810-807-1101ND
2018-11-145810-806-0930ND
2018-11-145810-805-0911ND
2018-11-145810-802-0849ND
2018-11-145810-804-1011ND
2019-05-155810-805-1353ND
2019-05-155810-802-1434ND
2019-05-155810-806-1334ND
2019-05-155810-808-1306ND
2019-05-155810-801-1226ND
2019-05-155810-803-1321ND
2019-05-155810-804-1245ND
2019-05-155810-807-1453ND
2019-11-135810-808-1017ND
2019-11-135810-805-0925ND
2019-11-135810-803-1000ND
2019-11-135810-802-0901ND
2019-11-135810-807-1107ND
2019-11-135810-804-1048ND
2019-11-135810-801-1033ND
2019-11-135810-806-0945ND