Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Valley of The Moon 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

 

94

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND160ND
2017ND180ND
2018ND160ND
2019ND120ND

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
2014-01-065810-017-1030ND
2014-01-065810-014-1123ND
2014-01-065810-015-0835ND
2014-01-065810-021-1215ND
2014-04-075810-021-1205ND
2014-04-075810-017-0840ND
2014-04-075810-015-1100ND
2014-04-075810-014-0802ND
2014-07-145810-021-1030ND
2014-07-145810-017-0930ND
2014-07-145810-015-1120ND
2014-07-145810-014-0830ND
2014-10-135810-017-0902ND
2014-10-135810-015-0812ND
2014-10-135810-021-1044ND
2014-10-135810-014-0933ND
2015-01-125810-015-0757ND
2015-01-125810-017-0845ND
2015-01-125810-021-0947ND
2015-01-125810-014-0909ND
2015-04-135810-021-0920ND
2015-04-135810-017-1026ND
2015-04-135810-014-1113ND
2015-04-135810-015-0758ND
2015-07-065810-015-0800ND
2015-07-065810-014-0930ND
2015-07-065810-017-0900ND
2015-07-065810-021-0815ND
2015-10-055810-021-0810ND
2015-10-055810-015-0745ND
2015-10-055810-017-0915ND
2015-10-125810-014-1130ND
2016-01-115810-021-1000ND
2016-01-115810-017-0915ND
2016-01-115810-014-0934ND
2016-01-115810-015-0833ND
2016-04-045810-015-0800ND
2016-04-045810-021-0832ND
2016-04-045810-017-0903ND
2016-04-045810-014-0933ND
2016-07-055810-015-0818ND
2016-07-055810-017-0854ND
2016-07-055810-014-0900ND
2016-07-055810-021-0945ND
2016-10-035810-015-0827ND
2016-10-035810-017-1004ND
2016-10-035810-014-1030ND
2016-10-035810-021-1138ND
2017-01-035810-021-0940ND
2017-01-035810-015-0810ND
2017-01-035810-014-1050ND
2017-01-035810-018-0840ND
2017-01-035810-017-1020ND
2017-04-105810-014-0800ND
2017-04-105810-015-1020ND
2017-04-105810-018-1000ND
2017-04-105810-017-0830ND
2017-04-105810-021-0930ND
2017-07-105810-014-0859ND
2017-07-105810-021-1216ND
2017-07-105810-017-0822ND
2017-07-105810-015-1115ND
2017-10-175810-015-0746ND
2017-10-175810-021-0939ND
2017-10-175810-017-0834ND
2017-10-175810-014-0909ND
2018-01-105810-017-0950ND
2018-01-105810-015-1115ND
2018-01-105810-021-1020ND
2018-01-105810-014-0920ND
2018-04-105810-015-1010ND
2018-04-105810-017-0850ND
2018-04-105810-021-0925ND
2018-04-105810-014-0825ND
2018-07-105810-014-0820ND
2018-07-105810-021-0915ND
2018-07-105810-015-1040ND
2018-07-105810-017-0840ND
2018-10-025810-015-0945ND
2018-10-025810-017-0845ND
2018-10-025810-014-0820ND
2018-10-025810-021-0905ND
2019-01-085810-014-0809ND
2019-01-085810-021-0917ND
2019-01-085810-017-0830ND
2019-01-085810-015-0955ND
2019-04-085810-014-0805ND
2019-04-085810-021-0955ND
2019-04-085810-017-0840ND
2019-04-085810-015-1050ND
2019-07-095810-021-0940ND
2019-07-095810-015-1015ND
2019-07-095810-014-0815ND
2019-07-095810-017-0915ND