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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Duncan Public Utilities 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.

 

84

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.08 ppb166ND - 4.00 ppb
2013ND40ND
20140.750 ppb165ND - 3.00 ppb
20151.78 ppb1610ND - 3.80 ppb
20163.08 ppb1613ND - 5.10 ppb
20172.44 ppb1611ND - 5.30 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
2012-03-125160574.00 ppb
2012-03-125160563.00 ppb
2012-03-125160553.00 ppb
2012-03-125160583.00 ppb
2012-05-10518142ND
2012-05-10518143ND
2012-05-10518141ND
2012-05-10518140ND
2012-09-18016798.001ND
2012-09-18016798.005ND
2012-09-18016798.007ND
2012-09-18016798.0032.20 ppb
2012-12-03020308.0012.00 ppb
2012-12-03020308.007ND
2012-12-03020308.005ND
2012-12-03020308.003ND
2013-10-16035053.004ND
2013-10-16035053.006ND
2013-10-16035053.008ND
2013-10-16035053.002ND
2014-01-15039273.002ND
2014-01-15039273.004ND
2014-01-15039273.006ND
2014-01-15039273.008ND
2014-04-15041975.0082.00 ppb
2014-04-15041975.0063.00 ppb
2014-04-15041975.004ND
2014-04-15041975.0022.20 ppb
2014-07-15044990.002ND
2014-07-15044990.004ND
2014-07-15044990.0062.60 ppb
2014-07-15044990.008ND
2014-10-14048807.008ND
2014-10-14048807.006ND
2014-10-14048807.0042.20 ppb
2014-10-14048807.002ND
2015-01-20051922.0022.70 ppb
2015-01-20051922.0042.90 ppb
2015-01-20051922.0062.60 ppb
2015-01-20051922.008ND
2015-04-14054809.008ND
2015-04-14054809.0062.70 ppb
2015-04-14054809.0042.70 ppb
2015-04-14054809.0022.40 ppb
2015-07-13058966.008ND
2015-07-13058966.006ND
2015-07-13058966.004ND
2015-07-13058966.002ND
2015-10-05063639.0083.80 ppb
2015-10-05063639.0063.70 ppb
2015-10-22063639.0112.40 ppb
2015-10-22063639.0122.50 ppb
2016-01-21067601.0083.40 ppb
2016-01-21067601.0063.70 ppb
2016-01-21067601.0043.50 ppb
2016-01-21067601.0023.60 ppb
2016-04-12SDWA-1026738-004.40 ppb
2016-04-12SDWA-1026739-004.90 ppb
2016-04-12SDWA-1026740-005.10 ppb
2016-04-12SDWA-1026741-004.90 ppb
2016-08-09SDWA-1050788-003.00 ppb
2016-08-09SDWA-1050785-002.50 ppb
2016-08-09SDWA-1050782-00ND
2016-08-09SDWA-1050779-002.90 ppb
2016-10-04SDWA-1068856-003.90 ppb
2016-10-04SDWA-1068859-003.50 ppb
2016-10-04SDWA-1068862-00ND
2016-10-04SDWA-1068865-00ND
2017-03-06SDWA-1115728-004.10 ppb
2017-03-06SDWA-1115729-003.40 ppb
2017-03-06SDWA-1115730-00ND
2017-03-06SDWA-1115731-002.70 ppb
2017-05-16SDWA-1142775-043.30 ppb
2017-05-16SDWA-1142773-044.30 ppb
2017-05-16SDWA-1142774-043.40 ppb
2017-05-22SDWA-1159243-00ND
2017-07-25SDWA-1168567-043.50 ppb
2017-07-25SDWA-1168569-043.90 ppb
2017-07-25SDWA-1168570-042.70 ppb
2017-07-25SDWA-1168568-045.30 ppb
2017-10-11SDWA-1201443-00ND
2017-10-11SDWA-1201446-00ND
2017-10-11SDWA-1201445-00ND
2017-10-11SDWA-1201444-002.50 ppb