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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Roxbury Water Company

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
2013N/A00N/A
2014ND160ND
20150.0550 ppb161ND - 0.880 ppb
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-01-09L4861831-1ND
2014-01-09L4861831-2ND
2014-01-09L4861831-3ND
2014-01-09L4861831-4ND
2014-04-03L4975169-2ND
2014-04-03L4975169-3ND
2014-04-03L4975169-1ND
2014-04-03L4975169-4ND
2014-07-03L5101859-2ND
2014-07-03L5101859-3ND
2014-07-03L5101859-1ND
2014-07-03L5101859-4ND
2014-10-02L5240190-3ND
2014-10-02L5240190-2ND
2014-10-02L5240190-1ND
2014-10-02L5240190-4ND
2015-01-08L5356735-4ND
2015-01-08L5356735-2ND
2015-01-08L5356735-1ND
2015-01-08L5356735-3ND
2015-04-02L5489246-1ND
2015-04-02L5489246-2ND
2015-04-02L5489246-3ND
2015-04-02L5489246-4ND
2015-07-02L5692464-4ND
2015-07-02L5692464-1ND
2015-07-02L5692464-20.880 ppb
2015-07-02L5692464-3ND
2015-10-01L5808111-1ND
2015-10-01L5808111-4ND
2015-10-01L5808111-2ND
2015-10-01L5808111-3ND
2016-01-07L5966720-4ND
2016-01-07L5966720-1ND
2016-01-07L5966720-3ND
2016-01-07L5966720-2ND
2016-04-073427287ND
2016-04-073427289ND
2016-04-073427290ND
2016-04-073427288ND
2016-07-073490896ND
2016-07-073490898ND
2016-07-073490899ND
2016-07-073490897ND
2016-10-063562209ND
2016-10-063562208ND
2016-10-063562211ND
2016-10-063562210ND
2017-01-053618182ND
2017-01-053618180ND
2017-01-053618183ND
2017-01-053618181ND
2017-04-063669548ND
2017-04-063669547ND
2017-04-063669545ND
2017-04-063669546ND
2017-07-063727245ND
2017-07-063727243ND
2017-07-063727244ND
2017-07-063727246ND
2017-10-053794261ND
2017-10-053794263ND
2017-10-053794262ND
2017-10-053794260ND
2018-01-113851887ND
2018-01-113851884ND
2018-01-113851885ND
2018-01-113851886ND
2018-04-053905705ND
2018-04-053905702ND
2018-04-053905704ND
2018-04-053905703ND
2018-07-053983533ND
2018-07-053983532ND
2018-07-053983534ND
2018-07-053983531ND
2018-10-044079655ND
2018-10-044079654ND
2018-10-044079656ND
2018-10-044079653ND
2019-01-1142660101ND
2019-01-1142659801ND
2019-01-1142660001ND
2019-01-1142659901ND
2019-04-0843718701ND
2019-04-0843718801ND
2019-04-0843719001ND
2019-04-0843718901ND
2019-07-1145217501ND
2019-07-1145217801ND
2019-07-1145217701ND
2019-07-1145217601ND
2019-10-0846953201ND
2019-10-0846953101ND
2019-10-0846953001ND
2019-10-0846952901ND