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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Los Alamos Municipal Water System

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

 

76

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
20150.0770 ppb202ND - 0.950 ppb
20160.0781 ppb162ND - 0.630 ppb
2017ND120ND
20180.0606 ppb161ND - 0.970 ppb
2019ND80ND

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
2014-03-051403212-001AND
2014-06-101406451-001AND
2014-09-241409C06-001BND
2014-09-241409C33-001BND
2015-02-181502748-001BND
2015-02-181502752-001BND
2015-02-181502750-001BND
2015-02-181502747-001BND
2015-03-091503351-001BND
2015-03-091503355-001BND
2015-03-091503354-001BND
2015-03-091503352-001BND
2015-06-082015016989ND
2015-06-082015016986ND
2015-06-082015016987ND
2015-06-082015016988ND
2015-09-0820150268670.950 ppb
2015-09-0820150268680.590 ppb
2015-09-082015026866ND
2015-09-082015026865ND
2015-12-082015035924ND
2015-12-082015035922ND
2015-12-082015035923ND
2015-12-082015035921ND
2016-03-0820160066180.630 ppb
2016-03-0820160066190.620 ppb
2016-03-082016006617ND
2016-03-082016006620ND
2016-06-062016015777ND
2016-06-062016015778ND
2016-06-062016015779ND
2016-06-062016015776ND
2016-09-072016026210ND
2016-09-072016026209ND
2016-09-072016026208ND
2016-09-072016026207ND
2016-12-072016035069ND
2016-12-072016035070ND
2016-12-072016035067ND
2016-12-072016035068ND
2017-03-152017007537ND
2017-03-152017007538ND
2017-03-152017007539ND
2017-03-242017008621ND
2017-06-162017017708ND
2017-06-162017017709ND
2017-06-162017017710ND
2017-06-162017017707ND
2017-09-112017026118ND
2017-09-112017026121ND
2017-09-112017026120ND
2017-09-112017026119ND
2018-03-072018006697ND
2018-03-072018006696ND
2018-03-0720180066950.970 ppb
2018-03-072018006694ND
2018-06-132018016393ND
2018-06-132018016392ND
2018-06-132018016391ND
2018-06-132018016390ND
2018-09-112018025476ND
2018-09-112018025477ND
2018-09-112018025478ND
2018-09-112018025479ND
2018-12-122018034406ND
2018-12-122018034407ND
2018-12-122018034408ND
2018-12-122018034409ND
2019-03-152019006517ND
2019-03-152019006519ND
2019-03-152019006518ND
2019-03-152019006516ND
2019-06-122019016229ND
2019-06-122019016228ND
2019-06-122019016227ND
2019-06-122019016226ND