Know Your Environment. Protect Your Health.

Monochloroacetic acid

Hoquiam Water Department

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.

 

76

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.367 ppb122ND - 2.40 ppb
20190.298 ppb162ND - 2.46 ppb
2020N/A00N/A
20210.561 ppb164ND - 2.31 ppb
2022ND160ND
2023ND160ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a public health goal. This health guideline protects against change to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-13ND
2018-02-13ND
2018-05-29ND
2018-06-29ND
2018-08-14ND
2018-08-14ND
2018-08-142.00 ppb
2018-08-142.40 ppb
2018-11-27ND
2018-11-27ND
2018-11-27ND
2018-11-27ND
2019-02-28ND
2019-02-28ND
2019-02-28ND
2019-02-28ND
2019-05-072.46 ppb
2019-05-072.31 ppb
2019-05-21ND
2019-05-21ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-08-27ND
2019-12-19ND
2019-12-19ND
2019-12-19ND
2019-12-19ND
2021-01-194065484ND
2021-01-194065485ND
2021-01-194065483ND
2021-01-194065482ND
2021-04-2041094842.18 ppb
2021-04-204109482ND
2021-04-2041094852.24 ppb
2021-04-2041094832.24 ppb
2021-07-2041470342.31 ppb
2021-07-204147036ND
2021-07-204147037ND
2021-07-204147035ND
2021-10-194196494ND
2021-10-194196495ND
2021-10-264198432ND
2021-10-264198431ND
2022-01-184234302ND
2022-01-184234298ND
2022-01-184234299ND
2022-01-184234295ND
2022-04-124274911ND
2022-04-124274910ND
2022-04-124274912ND
2022-04-124274913ND
2022-07-264363797ND
2022-07-264363796ND
2022-07-264363794ND
2022-07-264363795ND
2022-10-254374787ND
2022-10-254374785ND
2022-10-254374786ND
2022-10-254374784ND
2023-01-314411893ND
2023-01-314411894ND
2023-01-314411896ND
2023-01-314411895ND
2023-04-044439713ND
2023-04-044439711ND
2023-04-044439712ND
2023-04-044439710ND
2023-07-254507111ND
2023-07-254507110ND
2023-07-254507113ND
2023-07-254507112ND
2023-10-314548877ND
2023-10-314548875ND
2023-10-314548876ND
2023-10-314548874ND