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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Canyon Municipal Water System

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.03 ppb169ND - 4.50 ppb
20154.76 ppb1611ND - 8.50 ppb
20160.500 ppb162ND - 4.10 ppb
20170.300 ppb162ND - 2.50 ppb
20181.73 ppb1614ND - 2.70 ppb
20190.694 ppb168ND - 1.60 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
2014-02-25Q14060070284.00 ppb
2014-02-25Q14060070273.60 ppb
2014-02-25Q14060070263.30 ppb
2014-02-25Q14060070253.60 ppb
2014-05-20Q1416911003ND
2014-05-20Q1416911002ND
2014-05-20Q14169110012.20 ppb
2014-05-20Q1416911004ND
2014-08-20Q1437974005ND
2014-08-20Q1437974004ND
2014-08-20Q1437974006ND
2014-08-20Q1437974007ND
2014-11-20Q14569880043.80 ppb
2014-11-20Q14569880034.50 ppb
2014-11-20Q14569880023.70 ppb
2014-11-20Q14569880013.70 ppb
2015-03-18Q1510072004ND
2015-03-18Q1510072003ND
2015-03-18Q1510072002ND
2015-03-18Q1510072001ND
2015-06-09Q15211030016.20 ppb
2015-06-09Q1521103002ND
2015-06-09Q15211030044.60 ppb
2015-06-09Q15211030035.50 ppb
2015-09-16Q15360740087.80 ppb
2015-09-16Q15360740077.70 ppb
2015-09-16Q15360740068.10 ppb
2015-09-16Q15360740054.90 ppb
2015-12-02Q15478870057.10 ppb
2015-12-02Q15478870048.10 ppb
2015-12-02Q15478870038.50 ppb
2015-12-02Q15478870027.70 ppb
2016-03-16Q1611039003ND
2016-03-16Q16110390023.90 ppb
2016-03-16Q1611039004ND
2016-03-16Q1611039001ND
2016-06-09Q1623378011ND
2016-06-09Q1623378010ND
2016-06-09Q16233780094.10 ppb
2016-06-09Q1623378008ND
2016-09-20Q1639822004ND
2016-09-20Q1639822003ND
2016-09-20Q1639822002ND
2016-09-20Q1639822001ND
2016-11-14Q1649341007ND
2016-11-14Q1649341010ND
2016-11-14Q1649341009ND
2016-11-14Q1649341008ND
2017-02-09Q17059950072.50 ppb
2017-02-09Q1705995024ND
2017-02-09Q1705995006ND
2017-02-09Q17059950232.30 ppb
2017-05-04Q1718620005ND
2017-05-04Q1718620012ND
2017-05-04Q1718620011ND
2017-05-04Q1718620004ND
2017-09-07Q1741939001ND
2017-09-07Q1741939004ND
2017-09-07Q1741939002ND
2017-09-07Q1741939003ND
2017-11-14Q1758291007ND
2017-11-14Q1758291006ND
2017-11-14Q1758291005ND
2017-11-14Q1758291004ND
2018-02-15Q18066390042.00 ppb
2018-02-15Q18066390032.00 ppb
2018-02-15Q18066390021.40 ppb
2018-02-15Q18066390011.90 ppb
2018-05-17Q18202970061.90 ppb
2018-05-17Q1820297007ND
2018-05-17Q1820297009ND
2018-05-17Q18202970081.60 ppb
2018-08-22Q18336690042.70 ppb
2018-08-22Q18336690032.00 ppb
2018-08-22Q18336690021.90 ppb
2018-08-22Q18336690012.10 ppb
2018-11-15Q18468450012.30 ppb
2018-11-15Q18468450042.00 ppb
2018-11-15Q18468450031.60 ppb
2018-11-15Q18468450022.30 ppb
2019-02-21Q19077050061.50 ppb
2019-02-21Q19077050051.40 ppb
2019-02-21Q19077050071.20 ppb
2019-02-21Q19077050081.60 ppb
2019-05-16Q19262960121.20 ppb
2019-05-16Q19262960111.20 ppb
2019-05-16Q19262960101.50 ppb
2019-05-16Q19262960091.50 ppb
2019-07-10Q1943224005ND
2019-07-10Q1943224004ND
2019-07-10Q1943224003ND
2019-07-10Q1943224002ND
2019-10-09Q1972087001ND
2019-10-09Q1972087004ND
2019-10-09Q1972087003ND
2019-10-09Q1972087002ND