Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Monochloroacetic acid

Swiftwater Dev Association Inc.

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND10ND
2014ND10ND
20150.750 ppb82ND - 4.00 ppb
2016ND80ND
2017ND60ND

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
2012-02-27120228-003HAND
2013-06-17130618-004HAND
2014-07-09140710-026HAND
2015-03-11150312-004HAND
2015-03-11150312-003HAND
2015-06-10150611-007HA4.00 ppb
2015-06-10150611-008HA2.00 ppb
2015-09-17150918-004HAND
2015-09-17150918-003HAND
2015-12-09151210-012HAND
2015-12-09151210-011HAND
2016-03-09160310-002HAND
2016-03-09160310-001HAND
2016-06-09160610-016HAND
2016-06-09160610-015HAND
2016-09-08160909-008HAND
2016-09-08160909-007HAND
2016-12-19161220-009HAND
2016-12-19161220-008HAND
2017-03-30170331-005HAND
2017-03-30170331-006HAND
2017-11-08171109-021HAND
2017-11-08171109-020HAND
2017-12-06171207-005HAND
2017-12-06171207-004HAND