Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Salem Water

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
2014ND160ND
2015ND160ND
20160.781 ppb164ND - 4.20 ppb
20170.581 ppb164ND - 2.70 ppb
20181.99 ppb1612ND - 3.30 ppb
20192.22 ppb1613ND - 3.20 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
2014-01-0714010000601ND
2014-01-0714010000501ND
2014-01-0914010003201ND
2014-01-0914010003301ND
2014-04-0114093005101ND
2014-04-0114093005201ND
2014-04-0114093005601ND
2014-04-0114093005001ND
2014-07-0214184003601ND
2014-07-0214184003701ND
2014-07-0214184003401ND
2014-07-0214184003501ND
2014-11-1714324006201ND
2014-11-1714324006001ND
2014-11-1714324006101ND
2014-11-1714324006301ND
2015-01-0515008014601ND
2015-01-0615008015101ND
2015-01-0615008015201ND
2015-01-0615008015301ND
2015-04-0715099008901ND
2015-04-0715099008801ND
2015-04-0715099009201ND
2015-04-0715099008701ND
2015-07-0715189000801ND
2015-07-0715189000901ND
2015-07-0715189001001ND
2015-07-0715189000701ND
2015-10-0515279001101ND
2015-10-0515279001201ND
2015-10-0515279001301ND
2015-10-0515279001001ND
2016-01-0616008002801ND
2016-01-0616008002901ND
2016-01-0616008003001ND
2016-01-0616008003101ND
2016-04-0616098003601ND
2016-04-0616098003501ND
2016-04-0616098003801ND
2016-04-0616098003701ND
2016-07-05161890147014.20 ppb
2016-07-05161890153012.90 ppb
2016-07-05161890148012.50 ppb
2016-07-05161890152012.90 ppb
2016-10-0416280016201ND
2016-10-0416280016301ND
2016-10-0416280016801ND
2016-10-0416280016101ND
2017-01-0417005006601ND
2017-01-04170050068012.00 ppb
2017-01-0417005006901ND
2017-01-0417005006701ND
2017-04-0417096003601ND
2017-04-04170960033012.70 ppb
2017-04-04170960030012.30 ppb
2017-04-04170960032012.30 ppb
2017-07-0417187015001ND
2017-07-0417187015101ND
2017-07-0417187015201ND
2017-07-0417187014801ND
2017-10-0317278016601ND
2017-10-0317278016701ND
2017-10-0317278016501ND
2017-10-0317278016301ND
2018-01-0318004003801ND
2018-01-0318004003501ND
2018-01-0318004003601ND
2018-01-0318004003701ND
2018-04-03180950174012.40 ppb
2018-05-15181360011012.40 ppb
2018-05-15181360009012.20 ppb
2018-05-15181360010012.60 ppb
2018-07-03181860166013.20 ppb
2018-07-03181860165012.60 ppb
2018-08-07182200031012.70 ppb
2018-08-07182200030012.40 ppb
2018-10-03182770087013.10 ppb
2018-10-03182770089012.50 ppb
2018-10-03182770090012.40 ppb
2018-10-03182770088013.30 ppb
2019-01-1019011002902ND
2019-01-1019011002802ND
2019-01-10190110026022.20 ppb
2019-01-10190110027022.00 ppb
2019-04-08191010074013.20 ppb
2019-04-08191010076012.70 ppb
2019-04-08191010075012.90 ppb
2019-04-11191010073013.00 ppb
2019-07-09191910055013.20 ppb
2019-07-09191910057012.70 ppb
2019-07-09191910056012.70 ppb
2019-07-09191910058012.90 ppb
2019-10-02192760060012.60 ppb
2019-10-02192760058012.40 ppb
2019-10-02192760051013.00 ppb
2019-10-0219276005901ND