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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Upper Smith River Water Supply

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

 

100

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.17 ppb1611ND - 2.80 ppb
20150.745 ppb209ND - 2.70 ppb
20161.14 ppb1610ND - 2.50 ppb
20170.844 ppb166ND - 2.50 ppb
20180.350 ppb162ND - 3.00 ppb
2019ND160ND

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
2014-02-06E131207487ND
2014-02-06E1312074951.50 ppb
2014-02-06E1312074971.000 ppb
2014-02-06E1312074881.20 ppb
2014-05-05E1403056632.80 ppb
2014-05-05E1403056492.30 ppb
2014-05-05E1403056592.00 ppb
2014-05-05E1403056571.80 ppb
2014-08-06E140605053ND
2014-08-06E140605047ND
2014-08-06E1406050591.40 ppb
2014-08-06E1406050482.00 ppb
2014-11-04E1409014821.20 ppb
2014-11-04E1409014711.50 ppb
2014-11-04E140901470ND
2014-11-04E140901475ND
2015-02-05VA010-DCLS1.30 ppb
2015-02-05VA010-DCLS1.20 ppb
2015-02-05VA010-DCLS1.10 ppb
2015-02-05VA010-DCLSND
2015-05-05VA010-DCLSND
2015-05-05VA010-DCLSND
2015-05-05VA010-DCLSND
2015-05-05VA010-DCLSND
2015-08-05VA010-DCLS1.000 ppb
2015-08-05VA010-DCLSND
2015-08-05VA010-DCLSND
2015-08-06VA010-DCLSND
2015-10-09VA010-DCLS1.80 ppb
2015-10-09VA010-DCLS2.20 ppb
2015-10-09VA010-DCLSND
2015-10-09VA010-DCLSND
2015-11-02VA010-DCLS2.60 ppb
2015-11-02VA010-DCLSND
2015-11-02VA010-DCLS2.70 ppb
2015-11-02VA010-DCLS1.000 ppb
2016-02-04E1512068691.80 ppb
2016-02-04E151206867ND
2016-02-04E151206868ND
2016-02-04E1512068621.40 ppb
2016-05-02E1603034622.10 ppb
2016-05-02E1603034651.40 ppb
2016-05-02E1603034572.00 ppb
2016-05-02E1603034612.40 ppb
2016-08-03E1605071832.10 ppb
2016-08-03E1605071931.40 ppb
2016-08-03E1605071871.20 ppb
2016-08-03E1605071842.50 ppb
2016-11-0392318347001-HAAND
2016-11-0392318347004-HAAND
2016-11-0392318347003-HAAND
2016-11-0392318347002-HAAND
2017-02-0892329099004-HAA2.00 ppb
2017-02-0892329099001-HAAND
2017-02-0892329099002-HAAND
2017-02-0892329099003-HAAND
2017-05-0392339196004-HAA2.10 ppb
2017-05-0392339196002-HAAND
2017-05-0392339196003-HAAND
2017-05-0392339196001-HAA2.10 ppb
2017-08-0892350612003-HAA2.40 ppb
2017-08-0892350612001-HAA2.50 ppb
2017-08-0892350612002-HAAND
2017-08-0892350612004-HAAND
2017-11-0892362460002-HAA2.40 ppb
2017-11-0892362460001-HAAND
2017-11-0892362460003-HAAND
2017-11-0892362460004-HAAND
2018-02-0692372036004-HAA5ND
2018-02-0692372036003-HAA5ND
2018-02-0692372036002-HAA5ND
2018-02-0692372036001-HAA5ND
2018-05-0892383778004-HAA5ND
2018-05-0892383778001-HAA5ND
2018-05-0892383778002-HAA5ND
2018-05-0892383778003-HAA5ND
2018-08-0992395169004-HAA5ND
2018-08-0992395169003-HAA5ND
2018-08-0992395169002-HAA52.60 ppb
2018-08-0992395169001-HAA5ND
2018-11-0692406100001-HAA5ND
2018-11-0692406100002-HAA5ND
2018-11-0692406100003-HAA53.00 ppb
2018-11-0692406100004-HAA5ND
2019-02-0592416430001-HAA5ND
2019-02-0592416430002-HAA5ND
2019-02-0592416430003-HAA5ND
2019-02-0592416430004-HAA5ND
2019-05-0892428318004-HAA5ND
2019-05-0892428318002-HAA5ND
2019-05-0892428318001-HAA5ND
2019-05-2092429818001-HAA5ND
2019-08-0792440319002-HAA5ND
2019-08-0792440319004-HAA5ND
2019-08-0792440319003-HAA5ND
2019-08-0792440319001-HAA5ND
2019-11-0692452551004-HAA5ND
2019-11-0692452551003-HAA5ND
2019-11-0692452551002-HAA5ND
2019-11-0692452551001-HAA5ND