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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

West Hwy 80 Ark Road WS

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

 

192

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND320ND
2015ND320ND
2016ND320ND
20170.888 ppb328ND - 8.00 ppb
20181.86 ppb3226ND - 3.80 ppb
20191.54 ppb3220ND - 4.50 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
2014-02-181278951ND
2014-02-181278952ND
2014-02-181278953ND
2014-02-181278954ND
2014-02-181278951ND
2014-02-181278952ND
2014-02-181278953ND
2014-02-181278954ND
2014-05-151302273ND
2014-05-151302274ND
2014-05-151302275ND
2014-05-151302276ND
2014-05-151302273ND
2014-05-151302274ND
2014-05-151302275ND
2014-05-151302276ND
2014-08-211328640ND
2014-08-211328641ND
2014-08-211328642ND
2014-08-211328643ND
2014-08-211328640ND
2014-08-211328641ND
2014-08-211328642ND
2014-08-211328643ND
2014-11-251353111ND
2014-11-251353112ND
2014-11-251353113ND
2014-11-251353114ND
2014-11-251353111ND
2014-11-251353112ND
2014-11-251353113ND
2014-11-251353114ND
2015-02-181373853ND
2015-02-181373854ND
2015-02-181373855ND
2015-02-181373856ND
2015-02-181373853ND
2015-02-181373854ND
2015-02-181373855ND
2015-02-181373856ND
2015-05-191396214ND
2015-05-191396215ND
2015-05-191396216ND
2015-05-191396217ND
2015-05-191396214ND
2015-05-191396215ND
2015-05-191396216ND
2015-05-191396217ND
2015-08-031415897ND
2015-08-031415898ND
2015-08-031415899ND
2015-08-031415900ND
2015-08-031415897ND
2015-08-031415898ND
2015-08-031415899ND
2015-08-031415900ND
2015-11-181445672ND
2015-11-181445673ND
2015-11-181445672ND
2015-11-181445673ND
2015-11-191445670ND
2015-11-191445671ND
2015-11-191445670ND
2015-11-191445671ND
2016-02-111467309ND
2016-02-111467310ND
2016-02-111467311ND
2016-02-111467312ND
2016-02-111467309ND
2016-02-111467310ND
2016-02-111467311ND
2016-02-111467312ND
2016-05-051490078ND
2016-05-051490079ND
2016-05-051490080ND
2016-05-051490081ND
2016-05-051490078ND
2016-05-051490079ND
2016-05-051490080ND
2016-05-051490081ND
2016-08-091514789ND
2016-08-091514790ND
2016-08-091514797ND
2016-08-091514798ND
2016-08-091514789ND
2016-08-091514790ND
2016-08-091514797ND
2016-08-091514798ND
2016-11-011537963ND
2016-11-011537964ND
2016-11-011537971ND
2016-11-011537972ND
2016-11-011537963ND
2016-11-011537964ND
2016-11-011537971ND
2016-11-011537972ND
2017-02-0935294548023ND
2017-02-0935294548024ND
2017-02-0935294548025ND
2017-02-0935294548026ND
2017-02-0935294548023ND
2017-02-0935294548024ND
2017-02-0935294548025ND
2017-02-0935294548026ND
2017-05-05353106180311.20 ppb
2017-05-0535310618032ND
2017-05-05353106180331.50 ppb
2017-05-0535310618034ND
2017-05-05353106180311.20 ppb
2017-05-0535310618032ND
2017-05-05353106180331.50 ppb
2017-05-0535310618034ND
2017-08-1435331285009ND
2017-08-1435331285010ND
2017-08-14353312850118.00 ppb
2017-08-1435331285009ND
2017-08-1435331285010ND
2017-08-14353312850118.00 ppb
2017-08-2935333221001ND
2017-08-2935333221001ND
2017-11-0935347549001ND
2017-11-0935347549002ND
2017-11-09353475490033.50 ppb
2017-11-0935347549004ND
2017-11-0935347549001ND
2017-11-0935347549002ND
2017-11-09353475490033.50 ppb
2017-11-0935347549004ND
2018-02-2135376148001ND
2018-02-21353761480022.70 ppb
2018-02-2135376148003ND
2018-02-21353761480040.900 ppb
2018-02-2135376148001ND
2018-02-21353761480022.70 ppb
2018-02-2135376148003ND
2018-02-21353761480040.900 ppb
2018-05-21353939280012.70 ppb
2018-05-21353939280023.80 ppb
2018-05-21353939280033.10 ppb
2018-05-21353939280042.00 ppb
2018-05-21353939280012.70 ppb
2018-05-21353939280023.80 ppb
2018-05-21353939280033.10 ppb
2018-05-21353939280042.00 ppb
2018-08-15354116160012.40 ppb
2018-08-15354116160023.10 ppb
2018-08-15354116160032.60 ppb
2018-08-15354116160041.70 ppb
2018-08-15354116160012.40 ppb
2018-08-15354116160023.10 ppb
2018-08-15354116160032.60 ppb
2018-08-15354116160041.70 ppb
2018-11-01354282250051.50 ppb
2018-11-01354282250061.10 ppb
2018-11-0135428225007ND
2018-11-01354282250082.10 ppb
2018-11-01354282250051.50 ppb
2018-11-01354282250061.10 ppb
2018-11-0135428225007ND
2018-11-01354282250082.10 ppb
2019-02-1835449360001ND
2019-02-18354493600022.30 ppb
2019-02-18354493600031.70 ppb
2019-02-1835449360004ND
2019-02-1835449360001ND
2019-02-18354493600022.30 ppb
2019-02-18354493600031.70 ppb
2019-02-1835449360004ND
2019-05-15354693190011.80 ppb
2019-05-1535469319002ND
2019-05-15354693190034.50 ppb
2019-05-1535469319004ND
2019-05-15354693190011.80 ppb
2019-05-1535469319002ND
2019-05-15354693190034.50 ppb
2019-05-1535469319004ND
2019-08-01354870220011.90 ppb
2019-08-0135487022002ND
2019-08-01354870220033.00 ppb
2019-08-0135487022004ND
2019-08-01354870220011.90 ppb
2019-08-0135487022002ND
2019-08-01354870220033.00 ppb
2019-08-0135487022004ND
2019-11-19355140870013.50 ppb
2019-11-19355140870021.70 ppb
2019-11-19355140870032.70 ppb
2019-11-19355140870041.60 ppb
2019-11-19355140870013.50 ppb
2019-11-19355140870021.70 ppb
2019-11-19355140870032.70 ppb
2019-11-19355140870041.60 ppb