Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

City of Lacy Lakeview

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.600 ppb81ND - 4.80 ppb
20150.625 ppb82ND - 2.90 ppb
2016ND80ND
2017ND80ND
2018ND80ND
20193.69 ppb84ND - 9.60 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
2014-03-06AC45954ND
2014-03-06AC45938ND
2014-04-16AC50813ND
2014-04-16AC50809ND
2014-08-12AC63246ND
2014-08-12AC632554.80 ppb
2014-11-19AC72465ND
2014-11-19AC72432ND
2015-02-17AC80805ND
2015-02-17AC80809ND
2015-06-04AC947612.90 ppb
2015-06-04AC94760ND
2015-07-27AD01045ND
2015-07-27AD010442.10 ppb
2015-10-28AD11976ND
2015-10-28AD11979ND
2016-01-14AD18186ND
2016-01-14AD18190ND
2016-04-18AD33330ND
2016-04-18AD33332ND
2016-09-27AD51489ND
2016-09-27AD51491ND
2016-11-07AD57079ND
2016-11-07AD57080ND
2017-02-06AD69161ND
2017-02-06AD69163ND
2017-04-04AD78497ND
2017-04-04AD78493ND
2017-08-14AD92827ND
2017-08-14AD92824ND
2017-10-31AE03188ND
2017-10-31AE03187ND
2018-02-13AE13516ND
2018-02-13AE13517ND
2018-05-02AE24747ND
2018-05-02AE24754ND
2018-07-17AE33568ND
2018-07-17AE33565ND
2018-10-11AE43223ND
2018-10-11AE43217ND
2019-03-20AE59208ND
2019-03-20AE59210ND
2019-05-22AE676444.90 ppb
2019-05-22AE67604ND
2019-08-15AE788427.80 ppb
2019-08-15AE78840ND
2019-11-18AE894919.60 ppb
2019-11-18AE894907.20 ppb