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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Town of Ridgecrest Water Supply

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND160ND
20170.763 ppb164ND - 3.20 ppb
20180.375 ppb162ND - 3.00 ppb
20190.856 ppb168ND - 2.60 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
2014-03-191286872ND
2014-03-191286871ND
2014-03-191286872ND
2014-03-191286871ND
2014-06-181311309ND
2014-06-181311310ND
2014-06-181311310ND
2014-06-181311309ND
2014-09-171336419ND
2014-09-171336420ND
2014-09-171336420ND
2014-09-171336419ND
2014-12-161358965ND
2014-12-161358966ND
2014-12-161358966ND
2014-12-161358965ND
2015-03-181380988ND
2015-03-181380989ND
2015-03-181380989ND
2015-03-181380988ND
2015-06-171405010ND
2015-06-171405011ND
2015-06-171405011ND
2015-06-171405010ND
2015-09-161428326ND
2015-09-161428325ND
2015-09-161428326ND
2015-09-161428325ND
2015-12-161452164ND
2015-12-161452165ND
2015-12-161452165ND
2015-12-161452164ND
2016-03-151475116ND
2016-03-151475117ND
2016-03-151475117ND
2016-03-151475116ND
2016-06-131499801ND
2016-06-131499800ND
2016-06-131499801ND
2016-06-131499800ND
2016-09-121524545ND
2016-09-121524546ND
2016-09-121524546ND
2016-09-121524545ND
2016-12-121548550ND
2016-12-121548551ND
2016-12-121548551ND
2016-12-121548550ND
2017-03-0835300071002ND
2017-03-0835300071001ND
2017-03-0835300071001ND
2017-03-0835300071002ND
2017-06-1935319444003ND
2017-06-1935319444003ND
2017-06-1935319444004ND
2017-06-1935319444004ND
2017-09-06353349400033.20 ppb
2017-09-06353349400042.90 ppb
2017-09-06353349400033.20 ppb
2017-09-06353349400042.90 ppb
2017-12-1335363589002ND
2017-12-1335363589001ND
2017-12-1335363589001ND
2017-12-1335363589002ND
2018-03-2635382603002ND
2018-03-2635382603001ND
2018-03-2635382603002ND
2018-03-2635382603001ND
2018-06-1835399481002ND
2018-06-1835399481002ND
2018-06-1835399481001ND
2018-06-1835399481001ND
2018-09-19354198510023.00 ppb
2018-09-1935419851001ND
2018-09-1935419851001ND
2018-09-19354198510023.00 ppb
2018-12-1235437259001ND
2018-12-1235437259002ND
2018-12-1235437259001ND
2018-12-1235437259002ND
2019-03-18354563110021.80 ppb
2019-03-18354563110012.60 ppb
2019-03-18354563110012.60 ppb
2019-03-18354563110021.80 ppb
2019-06-1935477106002ND
2019-06-1935477106002ND
2019-06-1935477106001ND
2019-06-1935477106001ND
2019-09-1635498601002ND
2019-09-16354986010010.950 ppb
2019-09-16354986010010.950 ppb
2019-09-1635498601002ND
2019-12-10355182450011.50 ppb
2019-12-1035518245002ND
2019-12-10355182450011.50 ppb
2019-12-1035518245002ND