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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Golden Hill Water District

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.25 ppb41ND - 5.00 ppb
20151.20 ppb42ND - 2.90 ppb
20160.650 ppb41ND - 2.60 ppb
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-03-11JH14017885.00 ppb
2014-06-10JH1403811ND
2014-09-08JH1406506ND
2014-12-17JH1408922ND
2015-03-20JH1501751ND
2015-06-15JH15036942.90 ppb
2015-09-14JH1506291ND
2015-12-07JH15082991.90 ppb
2016-03-18S005767-01-LRAA1ND
2016-06-07S008074HAA2.60 ppb
2016-09-16S011373-01LRAA1ND
2016-12-27S014468-01BND
2017-03-17S01659601BND
2017-06-26S019456-01HAAND
2017-09-25S022845-01ND
2017-12-18S025349-01-HAAND
2018-03-12S027303-01BND
2018-06-11S029826-01LRAA1ND
2018-09-11S032729-02ND
2018-12-06S035256-01-LRAA1ND
2019-03-01S037255-01BND
2019-06-14S040106-01-1ND
2019-09-09S042545-01AND
2019-12-06S044852-01CND