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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Modesto, Salida

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
2013N/A00N/A
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
20180.263 ppb162ND - 2.10 ppb
20190.250 ppb161ND - 4.00 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
2014-03-041610-902-0915ND
2014-03-111610-900-1130ND
2014-03-111610-903-1045ND
2014-03-251610-901-1005ND
2014-06-031610-902-0910ND
2014-06-101610-903-1124ND
2014-06-101610-900-1225ND
2014-06-241610-901-0940ND
2014-09-021610-902-0940ND
2014-09-091610-903-1310ND
2014-09-091610-900-1335ND
2014-09-231610-901-0830ND
2014-12-041610-902-0918ND
2014-12-091610-903-1010ND
2014-12-091610-900-0941ND
2014-12-221610-901-0820ND
2015-03-031610-902-1050ND
2015-03-101610-900-1059ND
2015-03-101610-903-1020ND
2015-03-241610-901-1008ND
2015-06-021610-902-0805ND
2015-06-091610-903-1150ND
2015-06-091610-900-1245ND
2015-06-231610-901-1130ND
2015-09-011610-902-0845ND
2015-09-081610-900-1158ND
2015-09-081610-903-1250ND
2015-09-221610-901-0720ND
2015-12-011610-902-0944ND
2015-12-081610-900-0805ND
2015-12-081610-903-0850ND
2015-12-221610-901-0818ND
2016-03-011610-902-1035ND
2016-03-081610-900-0900ND
2016-03-081610-903-0835ND
2016-03-221610-901-0842ND
2016-06-071610-902-1041ND
2016-06-141610-900-0850ND
2016-06-141610-903-0919ND
2016-06-281610-901-0823ND
2016-09-071610-902-1136ND
2016-09-131610-903-1150ND
2016-09-131610-900-1100ND
2016-09-271610-901-1058ND
2016-12-061610-902-1105ND
2016-12-135867-900-1203ND
2016-12-135867-903-1105ND
2016-12-271610-901-1023ND
2017-03-141610-902-1040ND
2017-03-141610-901-1025ND
2017-03-141610-900-1055ND
2017-03-141610-903-1250ND
2017-06-061610-902-1020ND
2017-06-131610-900-0940ND
2017-06-131610-903-0830ND
2017-06-271610-901-0820ND
2017-09-051610-902-0755ND
2017-09-121610-903-0907ND
2017-09-121610-900-1015ND
2017-09-191610-901-0930ND
2017-12-051610-902-1023ND
2017-12-125867-900-0935ND
2017-12-125867-903-0815ND
2017-12-271610-901-0920ND
2018-03-061610-902-1105ND
2018-03-131610-900-1241ND
2018-03-131610-903-0942ND
2018-03-271610-901-1020ND
2018-06-051610-902-0951ND
2018-06-121610-900-0900ND
2018-06-121610-903-0805ND
2018-06-261610-901-0850ND
2018-09-051610-902-0820ND
2018-09-111610-900-1043ND
2018-09-111610-903-0953ND
2018-09-251610-901-09542.10 ppb
2018-12-041610-902-1055ND
2018-12-111610-903-08302.10 ppb
2018-12-111610-900-0945ND
2018-12-271610-901-0915ND
2019-03-051610-902-1325ND
2019-03-121610-903-0950ND
2019-03-121610-900-1027ND
2019-03-261610-901-0901ND
2019-06-041610-902-1048ND
2019-06-111610-900-0845ND
2019-06-111610-903-08204.00 ppb
2019-06-251610-901-0805ND
2019-09-041610-902-0810ND
2019-09-101610-900-1050ND
2019-09-101610-903-1009ND
2019-09-241610-901-1042ND
2019-12-031610-902-1053ND
2019-12-101610-903-0835ND
2019-12-101610-900-0905ND
2019-12-231610-901-1035ND