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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Central Wy Reg Water Sys Jpb

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

 

171

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.829 ppb2714ND - 3.10 ppb
20150.658 ppb369ND - 3.70 ppb
20160.193 ppb365ND - 2.80 ppb
20170.442 ppb3614ND - 1.60 ppb
2018ND360ND
2019N/A00N/A

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
2014-04-08C14040258-001B0.970 ppb
2014-04-08C14040258-002B1.30 ppb
2014-04-08C14040258-003B1.10 ppb
2014-04-08C14040258-004B1.10 ppb
2014-04-08C14040258-005B0.980 ppb
2014-04-08C14040258-006B1.30 ppb
2014-04-08C14040258-007B1.000 ppb
2014-04-08C14040258-008A1.30 ppb
2014-04-08C14040258-010A0.920 ppb
2014-07-08C14070272-001BND
2014-07-08C14070272-002BND
2014-07-08C14070272-003BND
2014-07-08C14070272-004BND
2014-07-08C14070272-005BND
2014-07-08C14070272-006BND
2014-07-08C14070272-007BND
2014-07-08C14070272-008AND
2014-07-08C14070272-010AND
2014-10-07C14100434-001B1.90 ppb
2014-10-07C14100434-002BND
2014-10-07C14100434-003BND
2014-10-07C14100434-004B2.70 ppb
2014-10-07C14100434-005B3.10 ppb
2014-10-07C14100434-006BND
2014-10-07C14100434-007B2.30 ppb
2014-10-07C14100434-008AND
2014-10-07C14100434-010A2.40 ppb
2015-01-06C15010069-001BND
2015-01-06C15010069-002BND
2015-01-06C15010069-003BND
2015-01-06C15010069-004BND
2015-01-06C15010069-005BND
2015-01-06C15010069-006BND
2015-01-06C15010069-007BND
2015-01-06C15010069-008AND
2015-01-06C15010069-010AND
2015-04-07C15040208-001B1.60 ppb
2015-04-07C15040208-002B3.70 ppb
2015-04-07C15040208-004B2.00 ppb
2015-04-07C15040208-005B2.60 ppb
2015-04-07C15040208-006B3.60 ppb
2015-04-07C15040208-007B2.80 ppb
2015-04-07C15040208-008A3.00 ppb
2015-04-07C15040208-010A3.60 ppb
2015-04-15C15040496-001AND
2015-07-07C15070202-001BND
2015-07-07C15070202-002BND
2015-07-07C15070202-003BND
2015-07-07C15070202-004BND
2015-07-07C15070202-005BND
2015-07-07C15070202-006BND
2015-07-07C15070202-007BND
2015-07-07C15070202-008AND
2015-07-07C15070202-010AND
2015-10-06C15100213-001B0.800 ppb
2015-10-06C15100213-002BND
2015-10-06C15100213-003BND
2015-10-06C15100213-004BND
2015-10-06C15100213-005BND
2015-10-06C15100213-006BND
2015-10-06C15100213-007BND
2015-10-06C15100213-008AND
2015-10-06C15100213-010AND
2016-01-05C16010071-001BND
2016-01-05C16010071-002B0.900 ppb
2016-01-05C16010071-003BND
2016-01-05C16010071-004B0.930 ppb
2016-01-05C16010071-005BND
2016-01-05C16010071-006BND
2016-01-05C16010071-007BND
2016-01-05C16010071-008AND
2016-01-05C16010071-010AND
2016-04-05C16040146-001BND
2016-04-05C16040146-002B2.80 ppb
2016-04-05C16040146-003BND
2016-04-05C16040146-004BND
2016-04-05C16040146-005BND
2016-04-05C16040146-006BND
2016-04-05C16040146-007BND
2016-04-05C16040146-008AND
2016-04-05C16040146-010AND
2016-07-05C16070073-001BND
2016-07-05C16070073-002B1.10 ppb
2016-07-05C16070073-003BND
2016-07-05C16070073-004BND
2016-07-05C16070073-005BND
2016-07-05C16070073-006BND
2016-07-05C16070073-007BND
2016-07-05C16070073-008AND
2016-07-05C16070073-010AND
2016-10-05C16100154-001B1.20 ppb
2016-10-05C16100154-002BND
2016-10-05C16100154-003BND
2016-10-05C16100154-004BND
2016-10-05C16100154-005BND
2016-10-05C16100154-006BND
2016-10-05C16100154-007BND
2016-10-05C16100154-008BND
2016-10-05C16100154-010BND
2017-01-04C17010096-001BND
2017-01-04C17010096-002BND
2017-01-04C17010096-003BND
2017-01-04C17010096-004B1.10 ppb
2017-01-04C17010096-005B0.930 ppb
2017-01-04C17010096-006B0.860 ppb
2017-01-04C17010096-007BND
2017-01-04C17010096-008A0.760 ppb
2017-01-04C17010096-010A0.770 ppb
2017-04-04C17040071-001B1.30 ppb
2017-04-04C17040071-002B1.000 ppb
2017-04-04C17040071-003BND
2017-04-04C17040071-004B1.50 ppb
2017-04-04C17040071-005B1.20 ppb
2017-04-04C17040071-006B1.30 ppb
2017-04-04C17040071-007B1.20 ppb
2017-04-04C17040071-008A1.60 ppb
2017-04-04C17040071-010A1.40 ppb
2017-07-05C17070062-001B1.000 ppb
2017-07-05C17070062-002BND
2017-07-05C17070062-003BND
2017-07-05C17070062-004BND
2017-07-05C17070062-005BND
2017-07-05C17070062-008AND
2017-07-05C17070062-009BND
2017-07-05C17070062-010AND
2017-07-05C17070062-011BND
2017-10-03C17100100-001BND
2017-10-03C17100100-002BND
2017-10-03C17100100-003BND
2017-10-03C17100100-004BND
2017-10-03C17100100-005BND
2017-10-03C17100100-008AND
2017-10-03C17100100-009BND
2017-10-03C17100100-010AND
2017-10-03C17100100-011BND
2018-01-09C18010249-011BND
2018-01-09C18010249-010AND
2018-01-09C18010249-001BND
2018-01-09C18010249-002BND
2018-01-09C18010249-003BND
2018-01-09C18010249-004BND
2018-01-09C18010249-005BND
2018-01-09C18010249-008AND
2018-01-09C18010249-009BND
2018-04-03C18040084-001BND
2018-04-03C18040084-010AND
2018-04-03C18040084-009BND
2018-04-03C18040084-008AND
2018-04-03C18040084-011BND
2018-04-03C18040084-004BND
2018-04-03C18040084-003BND
2018-04-03C18040084-002BND
2018-04-03C18040084-005BND
2018-07-03C18070084-010AND
2018-07-03C18070084-011BND
2018-07-03C18070084-009BND
2018-07-03C18070084-008AND
2018-07-03C18070084-005BND
2018-07-03C18070084-004BND
2018-07-03C18070084-003BND
2018-07-03C18070084-002BND
2018-07-03C18070084-001BND
2018-10-10C18100435-001BND
2018-10-10C18100435-002BND
2018-10-10C18100435-003BND
2018-10-10C18100435-004BND
2018-10-10C18100435-011BND
2018-10-10C18100435-008AND
2018-10-10C18100435-009BND
2018-10-10C18100435-010AND
2018-10-10C18100435-005BND