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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

South Toledo Bend Water District

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

 

142

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND300ND
2015ND240ND
2016ND360ND
20171.58 ppb208ND - 5.20 ppb
20180.263 ppb162ND - 2.10 ppb
20191.16 ppb168ND - 3.00 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
2014-01-071268110ND
2014-01-071268111ND
2014-01-071268112ND
2014-01-071268110ND
2014-01-071268111ND
2014-01-071268112ND
2014-03-041282419ND
2014-03-041282420ND
2014-03-041282421ND
2014-03-041282419ND
2014-03-041282420ND
2014-03-041282421ND
2014-06-031306817ND
2014-06-031306818ND
2014-06-031306819ND
2014-06-031306817ND
2014-06-031306818ND
2014-06-031306819ND
2014-09-021331142ND
2014-09-021331143ND
2014-09-021331144ND
2014-09-021331142ND
2014-09-021331143ND
2014-09-021331144ND
2014-12-021354587ND
2014-12-021354588ND
2014-12-021354589ND
2014-12-021354587ND
2014-12-021354588ND
2014-12-021354589ND
2015-03-031376439ND
2015-03-031376440ND
2015-03-031376441ND
2015-03-031376439ND
2015-03-031376440ND
2015-03-031376441ND
2015-06-021399939ND
2015-06-021399940ND
2015-06-021399941ND
2015-06-021399939ND
2015-06-021399940ND
2015-06-021399941ND
2015-09-011424133ND
2015-09-011424134ND
2015-09-011424135ND
2015-09-011424133ND
2015-09-011424134ND
2015-09-011424135ND
2015-12-011448154ND
2015-12-011448155ND
2015-12-011448156ND
2015-12-011448154ND
2015-12-011448155ND
2015-12-011448156ND
2016-03-011471477ND
2016-03-011471478ND
2016-03-011471479ND
2016-03-011471477ND
2016-03-011471478ND
2016-03-011471479ND
2016-06-071497794ND
2016-06-071497795ND
2016-06-071497796ND
2016-06-071497794ND
2016-06-071497795ND
2016-06-071497796ND
2016-07-051504798ND
2016-07-051504799ND
2016-07-051504800ND
2016-07-051504798ND
2016-07-051504799ND
2016-07-051504800ND
2016-08-021512628ND
2016-08-021512629ND
2016-08-021512630ND
2016-08-021512628ND
2016-08-021512629ND
2016-08-021512630ND
2016-09-061522405ND
2016-09-061522406ND
2016-09-061522407ND
2016-09-061522405ND
2016-09-061522406ND
2016-09-061522407ND
2016-12-061546498ND
2016-12-061546499ND
2016-12-061546500ND
2016-12-061546498ND
2016-12-061546499ND
2016-12-061546500ND
2017-03-0235298741001ND
2017-03-0235298741008ND
2017-03-0235298741001ND
2017-03-0235298741008ND
2017-06-1535318967007ND
2017-06-1535318967008ND
2017-06-1535318967007ND
2017-06-1535318967008ND
2017-09-2735339092009ND
2017-09-2735339092010ND
2017-09-2735339092009ND
2017-09-2735339092010ND
2017-10-05353406540015.20 ppb
2017-10-05353406540024.40 ppb
2017-10-05353406540015.20 ppb
2017-10-05353406540024.40 ppb
2017-12-06353622390013.40 ppb
2017-12-06353622390022.80 ppb
2017-12-06353622390013.40 ppb
2017-12-06353622390022.80 ppb
2018-03-1435380527001ND
2018-03-14353805270022.10 ppb
2018-03-1435380527001ND
2018-03-14353805270022.10 ppb
2018-06-0435396469001ND
2018-06-0435396469002ND
2018-06-0435396469001ND
2018-06-0435396469002ND
2018-09-1035417570001ND
2018-09-1035417570002ND
2018-09-1035417570001ND
2018-09-1035417570002ND
2018-12-0335435390001ND
2018-12-0335435390002ND
2018-12-0335435390001ND
2018-12-0335435390002ND
2019-03-06354529520011.80 ppb
2019-03-06354529520021.60 ppb
2019-03-06354529520011.80 ppb
2019-03-06354529520021.60 ppb
2019-06-1035475048001ND
2019-06-1035475048002ND
2019-06-1035475048001ND
2019-06-1035475048002ND
2019-09-0335495035001ND
2019-09-0335495035002ND
2019-09-0335495035001ND
2019-09-0335495035002ND
2019-12-16355197470012.90 ppb
2019-12-16355197470023.00 ppb
2019-12-16355197470012.90 ppb
2019-12-16355197470023.00 ppb