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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Crowley Water System (LAWCO)

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

 

198

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
20140.369 ppb3210ND - 1.40 ppb
20150.0938 ppb322ND - 1.50 ppb
2016ND320ND
20170.224 ppb368ND - 1.10 ppb
2018ND340ND
20190.193 ppb326ND - 1.10 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
2014-02-12201164519ND
2014-02-1220116520ND
2014-02-1220116521ND
2014-02-12201164519ND
2014-02-1220116520ND
2014-02-1220116521ND
2014-02-202011660071.10 ppb
2014-02-202011660071.10 ppb
2014-05-062036930011.10 ppb
2014-05-06203693002ND
2014-05-062036930031.000 ppb
2014-05-06203693004ND
2014-05-062036930011.10 ppb
2014-05-06203693002ND
2014-05-062036930031.000 ppb
2014-05-06203693004ND
2014-08-06207778001ND
2014-08-06207778002ND
2014-08-06207778003ND
2014-08-06207778004ND
2014-08-06207778001ND
2014-08-06207778002ND
2014-08-06207778003ND
2014-08-06207778004ND
2014-11-052012019001ND
2014-11-0520120190021.30 ppb
2014-11-052012019003ND
2014-11-0520120190041.40 ppb
2014-11-052012019001ND
2014-11-0520120190021.30 ppb
2014-11-052012019003ND
2014-11-0520120190041.40 ppb
2015-02-042015704001ND
2015-02-042015704002ND
2015-02-042015704003ND
2015-02-042015704004ND
2015-02-042015704001ND
2015-02-042015704002ND
2015-02-042015704003ND
2015-02-042015704004ND
2015-05-062019644007ND
2015-05-062019644008ND
2015-05-0620196440091.50 ppb
2015-05-062019644010ND
2015-05-062019644007ND
2015-05-062019644008ND
2015-05-0620196440091.50 ppb
2015-05-062019644010ND
2015-08-052023792001ND
2015-08-052023792002ND
2015-08-052023792003ND
2015-08-052023792004ND
2015-08-052023792001ND
2015-08-052023792002ND
2015-08-052023792003ND
2015-08-052023792004ND
2015-11-042028156001ND
2015-11-042028156002ND
2015-11-042028156003ND
2015-11-042028156004ND
2015-11-042028156001ND
2015-11-042028156002ND
2015-11-042028156003ND
2015-11-042028156004ND
2016-02-032032166001ND
2016-02-032032166002ND
2016-02-032032166003ND
2016-02-032032166004ND
2016-02-032032166001ND
2016-02-032032166002ND
2016-02-032032166003ND
2016-02-032032166004ND
2016-05-032036201001ND
2016-05-032036201002ND
2016-05-032036201003ND
2016-05-032036201004ND
2016-05-032036201001ND
2016-05-032036201002ND
2016-05-032036201003ND
2016-05-032036201004ND
2016-08-022040697001ND
2016-08-022040697002ND
2016-08-022040697003ND
2016-08-022040697004ND
2016-08-022040697001ND
2016-08-022040697002ND
2016-08-022040697003ND
2016-08-022040697004ND
2016-11-012045178001ND
2016-11-012045178002ND
2016-11-012045178003ND
2016-11-012045178004ND
2016-11-012045178001ND
2016-11-012045178002ND
2016-11-012045178003ND
2016-11-012045178004ND
2017-02-0235292955005ND
2017-02-0235292955006ND
2017-02-0235292955007ND
2017-02-0235292955008ND
2017-02-0235292955009ND
2017-02-0235292955005ND
2017-02-0235292955006ND
2017-02-0235292955007ND
2017-02-0235292955008ND
2017-02-0235292955009ND
2017-05-0435310763001ND
2017-05-0435310763002ND
2017-05-0435310763004ND
2017-05-0435310763005ND
2017-05-0435310763001ND
2017-05-0435310763002ND
2017-05-0435310763004ND
2017-05-0435310763005ND
2017-05-0935311736008ND
2017-05-0935311736008ND
2017-08-0435328349003ND
2017-08-0435328349004ND
2017-08-0435328349005ND
2017-08-0435328349006ND
2017-08-0435328349003ND
2017-08-0435328349004ND
2017-08-0435328349005ND
2017-08-0435328349006ND
2017-11-02353462100011.000 ppb
2017-11-02353462100020.970 ppb
2017-11-02353462100030.960 ppb
2017-11-02353462100041.10 ppb
2017-11-02353462100011.000 ppb
2017-11-02353462100020.970 ppb
2017-11-02353462100030.960 ppb
2017-11-02353462100041.10 ppb
2018-02-0135371892001ND
2018-02-0135371892002ND
2018-02-0135371892003ND
2018-02-0135371892004ND
2018-02-0135371892001ND
2018-02-0135371892002ND
2018-02-0135371892003ND
2018-02-0135371892004ND
2018-05-1635393206001ND
2018-05-1635393206002ND
2018-05-1635393206003ND
2018-05-1635393206004ND
2018-05-1635393206001ND
2018-05-1635393206002ND
2018-05-1635393206003ND
2018-05-1635393206004ND
2018-08-2435413453001ND
2018-08-2435413453002ND
2018-08-2435413453003ND
2018-08-2435413453004ND
2018-08-2435413453001ND
2018-08-2435413453002ND
2018-08-2435413453003ND
2018-08-2435413453004ND
2018-08-3035414732001ND
2018-08-3035414732001ND
2018-11-0135428222001ND
2018-11-0135428222002ND
2018-11-0135428222003ND
2018-11-0135428222004ND
2018-11-0135428222001ND
2018-11-0135428222002ND
2018-11-0135428222003ND
2018-11-0135428222004ND
2019-02-2535450797001ND
2019-02-25354507970020.990 ppb
2019-02-2535450797003ND
2019-02-2535450797001ND
2019-02-25354507970020.990 ppb
2019-02-2535450797003ND
2019-03-0735453381001ND
2019-03-0735453381001ND
2019-05-0235466139001ND
2019-05-0235466139002ND
2019-05-0235466139003ND
2019-05-0235466139004ND
2019-05-0235466139001ND
2019-05-0235466139002ND
2019-05-0235466139003ND
2019-05-0235466139004ND
2019-08-0135487152001ND
2019-08-0135487152002ND
2019-08-01354871520031.000 ppb
2019-08-01354871520041.10 ppb
2019-08-0135487152001ND
2019-08-0135487152002ND
2019-08-01354871520031.000 ppb
2019-08-01354871520041.10 ppb
2019-11-1435512856001ND
2019-11-1435512856002ND
2019-11-1435512856003ND
2019-11-1435512856004ND
2019-11-1435512856001ND
2019-11-1435512856002ND
2019-11-1435512856003ND
2019-11-1435512856004ND