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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Santa Rosa

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
2013N/A00N/A
2014ND80ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND80ND

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
2014-01-071610-025-1115ND
2014-01-071610-018-1041ND
2014-04-071610-025-0915ND
2014-04-071610-018-0836ND
2014-07-091610-025-0926ND
2014-07-091610-018-0859ND
2014-10-071610-025-0730ND
2014-10-071610-018-0807ND
2015-01-061610-018-1114ND
2015-01-061610-025-1051ND
2015-04-081610-018-0840ND
2015-04-081610-025-0910ND
2015-07-101610-018-0858ND
2015-07-101610-025-0831ND
2015-10-071610-018-0854ND
2015-10-071610-025-0829ND
2016-01-201610-018-1410ND
2016-01-201610-025-1323ND
2016-04-051610-018-1008ND
2016-04-051610-025-1058ND
2016-07-051610-018-0954ND
2016-07-051610-025-1104ND
2016-10-141610-018-1240ND
2016-10-141610-025-1345ND
2017-01-191610-025-1131ND
2017-01-191610-018-1034ND
2017-05-151610-025-1122ND
2017-05-151610-018-1049ND
2017-07-101610-025-1447ND
2017-07-101610-018-1344ND
2017-10-031610-025-1223ND
2017-10-031610-018-1309ND
2018-01-191610-018-1135ND
2018-01-191610-025-1215ND
2018-04-171610-018-1028ND
2018-04-171610-025-1209ND
2018-07-111610-025-1040ND
2018-07-111610-018-1130ND
2018-10-021610-025-1336ND
2018-10-021610-018-0809ND
2019-01-141610-025-1336ND
2019-01-141610-018-0809ND
2019-04-011610-025-1005ND
2019-04-011610-018-0838ND
2019-07-151610-025-1330ND
2019-07-151610-018-1055ND
2019-10-011610-025-0924ND
2019-10-011610-018-0826ND