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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

City of Bothell Water

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.

 

92

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.450 ppb123ND - 2.10 ppb
20130.550 ppb164ND - 2.50 ppb
20140.675 ppb165ND - 2.80 ppb
20150.179 ppb161ND - 2.87 ppb
20160.547 ppb164ND - 2.56 ppb
2017ND160ND

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
2012-04-1006381ND
2012-04-1006383ND
2012-04-1006380ND
2012-04-11063821.70 ppb
2012-07-1112621ND
2012-07-1112619ND
2012-07-11126181.60 ppb
2012-07-11126202.10 ppb
2012-10-0919114ND
2012-10-0919115ND
2012-10-0919113ND
2012-10-0919112ND
2013-01-1500889ND
2013-01-1500888ND
2013-01-1500891ND
2013-01-1500890ND
2013-04-0907447ND
2013-04-0907448ND
2013-04-0907446ND
2013-04-0907449ND
2013-07-09140802.50 ppb
2013-07-0914079ND
2013-07-10140812.10 ppb
2013-07-1014078ND
2013-10-1621149ND
2013-10-16211502.20 ppb
2013-10-16211482.00 ppb
2013-10-1621151ND
2014-01-1300704ND
2014-01-1300705ND
2014-01-13007031.70 ppb
2014-01-1400706ND
2014-04-14065201.90 ppb
2014-04-1406521ND
2014-04-1406523ND
2014-04-14065222.60 ppb
2014-07-18128502.80 ppb
2014-07-1812849ND
2014-07-1812851ND
2014-07-1812848ND
2014-10-1319154ND
2014-10-13191551.80 ppb
2014-10-1319153ND
2014-10-1319156ND
2015-02-1846804ND
2015-02-1846801ND
2015-02-1846803ND
2015-02-1846802ND
2015-04-1492003ND
2015-04-1492002ND
2015-04-1492001ND
2015-04-1492004ND
2015-07-1340604ND
2015-07-1340603ND
2015-07-1340602ND
2015-07-1340601ND
2015-10-13231012.87 ppb
2015-10-1323102ND
2015-10-1323103ND
2015-10-1323104ND
2016-01-12ND
2016-01-12ND
2016-01-12ND
2016-01-12ND
2016-04-122.56 ppb
2016-04-12ND
2016-04-12ND
2016-04-12ND
2016-07-12ND
2016-07-12ND
2016-07-121.94 ppb
2016-07-12ND
2016-10-11ND
2016-10-11ND
2016-10-112.16 ppb
2016-10-112.09 ppb
2017-01-12ND
2017-01-12ND
2017-01-12ND
2017-01-12ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-04-11ND
2017-07-27ND
2017-07-27ND
2017-07-27ND
2017-07-27ND
2017-10-11ND
2017-10-11ND
2017-10-11ND
2017-10-11ND