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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Trophy Club Municipal Utility District 1

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.675 ppb82ND - 3.20 ppb
20152.00 ppb84ND - 5.50 ppb
20161.93 ppb82ND - 8.90 ppb
2017ND80ND
20180.888 ppb84ND - 2.00 ppb
20191.33 ppb86ND - 2.40 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
2014-03-11Q14077420072.20 ppb
2014-03-11Q1407742006ND
2014-06-02Q1418950002ND
2014-06-02Q1418950001ND
2014-08-04Q1433371002ND
2014-08-04Q1433371001ND
2014-10-14Q14528570023.20 ppb
2014-10-14Q1452857001ND
2015-03-16Q1509486004ND
2015-03-16Q1509486003ND
2015-06-02Q1519964001ND
2015-06-02Q15199640023.00 ppb
2015-09-02Q15338410025.50 ppb
2015-09-02Q15338410014.30 ppb
2015-10-22Q15418280023.20 ppb
2015-10-22Q1541828001ND
2016-02-18Q1607286005ND
2016-02-18Q1607286004ND
2016-05-05Q1617856002ND
2016-05-05Q1617856001ND
2016-07-27Q1630710002ND
2016-07-27Q1630710001ND
2016-10-10Q16427750016.50 ppb
2016-10-10Q16427750028.90 ppb
2017-01-09Q1700721002ND
2017-01-09Q1700721001ND
2017-04-10Q1714754002ND
2017-04-10Q1714754001ND
2017-07-12Q1728680001ND
2017-07-12Q1728680002ND
2017-10-10Q1749676004ND
2017-10-10Q1749676003ND
2018-01-08Q1800562002ND
2018-01-08Q1800562001ND
2018-04-11Q18151870021.50 ppb
2018-04-11Q18151870061.80 ppb
2018-07-16Q1828197002ND
2018-07-16Q1828197001ND
2018-10-17Q18417470021.80 ppb
2018-10-17Q18417470012.00 ppb
2019-02-06Q19056140021.90 ppb
2019-02-06Q19056140012.00 ppb
2019-04-18Q19157180062.40 ppb
2019-04-18Q19157180021.10 ppb
2019-07-29Q19497700021.60 ppb
2019-07-29Q19497700011.60 ppb
2019-10-21Q1973466001ND
2019-10-21Q1973466002ND