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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Camp Loma Mar

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
20153.00 ppb42ND - 8.50 ppb
2016ND40ND
20173.47 ppb32ND - 6.40 ppb
20184.50 ppb32ND - 9.00 ppb
20190.875 ppb41ND - 3.50 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
2014-01-151644-900-0830ND
2014-02-121644-900-0830ND
2014-03-121644-900-0900ND
2014-06-021644-900-0730ND
2014-09-081644-900-0730ND
2014-12-041644-900-0900ND
2015-03-111644-900-08003.50 ppb
2015-06-031644-900-0930ND
2015-08-121644-900-0915ND
2015-12-021644-900-07008.50 ppb
2016-03-091644-900-1735ND
2016-06-081644-900-0840ND
2016-08-101644-900-1000ND
2016-12-071644-900-0915ND
2017-03-011644-900-0800ND
2017-06-071644-900-10006.40 ppb
2017-09-131644-900-08304.00 ppb
2018-03-121644-900-09009.00 ppb
2018-06-061644-900-08304.50 ppb
2018-09-121644-900-0700ND
2019-03-121644-900-1000ND
2019-06-041644-900-09003.50 ppb
2019-09-101644-900-0830ND
2019-12-031644-900-0900ND