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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Ryan Utilities Authority

NOTE: Ryan Utilities Authority purchases water from Waurika Public Works Authority which is required to test for monochloroacetic acid. Sample information shown below was taken by Waurika Public Works Authority.

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.

 

43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.575 ppb41ND - 2.30 ppb
20132.90 ppb222.10 ppb - 3.70 ppb
20142.80 ppb84ND - 9.60 ppb
20154.06 ppb86ND - 11.2 ppb
20165.54 ppb882.10 ppb - 9.30 ppb
20177.45 ppb883.70 ppb - 11.6 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

NOTE: Ryan Utilities Authority purchases water from Waurika Public Works Authority which is required to test for monochloroacetic acid. Sample information shown below was taken by Waurika Public Works Authority.

Date Lab ID Result
2012-02-292B29054-01ND
2012-05-092E09112-04ND
2012-08-292H29082-02ND
2012-11-142K14066-01ND
2013-11-133K13072-01ND
2013-11-133K13072-02ND
2013-11-133K13072-03ND
2014-02-124B12128-03ND
2014-02-124B12128-02ND
2014-02-124B12128-01ND
2014-05-074E07094-01ND
2014-05-074E07094-02ND
2014-05-074E07094-03ND
2014-08-134H13150-03ND
2014-08-134H13150-02ND
2014-08-134H13150-01ND
2014-11-264K26058-03ND
2014-11-264K26058-02ND
2014-11-264K26058-01ND
2015-02-115B11134-02ND
2015-02-115B11134-01ND
2015-05-135E13145-02ND
2015-05-135E13145-01ND
2015-08-265H26125-02ND
2015-08-265H26125-01ND
2015-11-185K18147-02ND
2015-11-185K18147-01ND
2016-02-176B17074-015.81 ppb
2016-02-176B17074-025.51 ppb
2016-05-116E11166-02ND
2016-05-116E11166-01ND
2016-08-106H10171-01ND
2016-08-106H10171-02ND
2016-11-026K02154-02ND
2016-11-026K02154-01ND
2017-02-087B08141-02ND
2017-02-087B08141-01ND
2017-04-267E03198-01ND
2017-04-267E03198-02ND
2017-08-167H16173-02ND
2017-08-167H16173-01ND
2017-11-157K15171-02ND
2017-11-157K15171-01ND