Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Ozark Mtn Regional PWA

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

 

53

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.19 ppb124ND - 5.60 ppb
2015ND90ND
20161.31 ppb82ND - 7.80 ppb
2017ND80ND
20180.825 ppb82ND - 3.70 ppb
20191.21 ppb83ND - 5.00 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
2014-01-2114023004701ND
2014-01-21140230046014.10 ppb
2014-01-21140230048015.60 ppb
2014-04-30141210058012.10 ppb
2014-04-3014121006001ND
2014-04-3014121005901ND
2014-07-2814212001801ND
2014-07-28142120017012.50 ppb
2014-07-2814212001901ND
2014-10-2714303008901ND
2014-10-2714303009001ND
2014-10-2714303008801ND
2015-01-2715029008401ND
2015-01-2715029008301ND
2015-04-2715120004901ND
2015-04-2715120004801ND
2015-04-2715120005001ND
2015-07-2715210001701ND
2015-07-2715210001601ND
2015-10-2815302003901ND
2015-10-2815302003801ND
2016-01-21160250080012.70 ppb
2016-01-21160250081017.80 ppb
2016-05-1616140010101ND
2016-05-1616140010001ND
2016-08-2216237000201ND
2016-08-2216237000101ND
2016-11-1416321009001ND
2016-11-1416321009101ND
2017-02-0617040000401ND
2017-02-0617040000301ND
2017-04-2417117002401ND
2017-04-2417117002501ND
2017-07-2417207000901ND
2017-07-2417207001001ND
2017-10-2317299003801ND
2017-10-2317299003701ND
2018-01-2918032003201ND
2018-01-2918032003101ND
2018-05-0718129000401ND
2018-05-0718129000301ND
2018-07-3018213005801ND
2018-07-3018213005701ND
2018-10-29183040002012.90 ppb
2018-10-29183040001013.70 ppb
2019-01-28190310065012.20 ppb
2019-01-28190310064012.50 ppb
2019-04-2919122004801ND
2019-04-2919122004701ND
2019-07-3119212007801ND
2019-07-3119212007901ND
2019-10-2919305002501ND
2019-10-29193050024015.00 ppb