Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Walnut Hill Water

NOTE: Walnut Hill Water purchases water from Bradley Waterworks which is required to test for monochloroacetic acid. Sample information shown below was taken by Bradley Waterworks.

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

 

49

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015ND80ND
2016ND80ND
2017ND80ND
2018ND80ND
2019ND60ND

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

NOTE: Walnut Hill Water purchases water from Bradley Waterworks which is required to test for monochloroacetic acid. Sample information shown below was taken by Bradley Waterworks.

Date Lab ID Result
2014-01-0714008001801ND
2014-01-0714008001701ND
2014-04-0114093001601ND
2014-04-0114093001501ND
2014-07-0214184007901ND
2014-07-0214184008001ND
2014-10-0714282006301ND
2014-10-0714282006201ND
2015-01-0715008010001ND
2015-01-0715008009901ND
2015-04-0715099005701ND
2015-04-0715099005801ND
2015-07-0715190007601ND
2015-07-0715190007501ND
2015-10-0615281002801ND
2015-10-0615281002901ND
2016-01-0516007001601ND
2016-01-0516007001701ND
2016-04-0416098005401ND
2016-04-0416098005301ND
2016-07-0516189007501ND
2016-07-0516189007401ND
2016-10-0516280003701ND
2016-10-0516280003801ND
2017-01-0417005005701ND
2017-01-0417005005801ND
2017-06-1917172008401ND
2017-06-1917172008301ND
2017-08-1517229001901ND
2017-08-1517229002001ND
2017-11-1317320000601ND
2017-11-1317320000501ND
2018-02-1218046002401ND
2018-02-1218046002301ND
2018-05-1418137006601ND
2018-05-1418137006501ND
2018-08-1318228002801ND
2018-08-1318228002601ND
2018-09-1818263001201ND
2018-11-1318319003501ND
2018-11-1318319003401ND
2019-02-1119045009501ND
2019-02-1119045009601ND
2019-06-1819171002801ND
2019-06-1819171002701ND
2019-08-1219227002301ND
2019-08-1219227002201ND
2019-11-0519311002201ND
2019-11-0519311002101ND