Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Edmonds

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.

 

80

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.581 ppb164ND - 2.80 ppb
20190.225 ppb161ND - 3.60 ppb
2020N/A00N/A
20211.37 ppb168ND - 3.60 ppb
20220.588 ppb164ND - 2.60 ppb
20230.794 ppb165ND - 2.90 ppb

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
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-02-06ND
2018-05-082.00 ppb
2018-05-082.80 ppb
2018-05-082.50 ppb
2018-05-082.00 ppb
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-08-07ND
2018-11-13ND
2018-11-13ND
2018-11-13ND
2018-11-13ND
2019-02-19ND
2019-02-19ND
2019-02-19ND
2019-02-19ND
2019-05-07ND
2019-05-07ND
2019-05-07ND
2019-05-073.60 ppb
2019-08-12ND
2019-08-12ND
2019-08-12ND
2019-08-12ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2021-02-0940757442.50 ppb
2021-02-0940757642.10 ppb
2021-02-0940757662.20 ppb
2021-02-094075768ND
2021-05-1741189573.20 ppb
2021-05-1741189552.70 ppb
2021-05-1741180463.40 ppb
2021-05-1741180483.60 ppb
2021-08-124166185ND
2021-08-1241661812.20 ppb
2021-08-124166183ND
2021-08-124166187ND
2021-10-114249523ND
2021-10-114249521ND
2021-10-114249525ND
2021-10-114249527ND
2022-02-084242064ND
2022-02-084242059ND
2022-02-084242068ND
2022-02-084242073ND
2022-05-054286893ND
2022-05-054286897ND
2022-05-054286899ND
2022-05-054286895ND
2022-07-1243162052.10 ppb
2022-07-1243162012.50 ppb
2022-07-1243162092.60 ppb
2022-07-1243162072.20 ppb
2022-10-114356083ND
2022-10-114356081ND
2022-10-114356079ND
2022-10-114356085ND
2023-02-074415134ND
2023-02-074415140ND
2023-02-074415138ND
2023-02-074415136ND
2023-05-184460066ND
2023-05-184460068ND
2023-05-1844600622.00 ppb
2023-05-184460064ND
2023-07-3144966792.90 ppb
2023-07-3144966812.30 ppb
2023-07-3144966772.90 ppb
2023-07-3144966832.60 ppb
2023-10-304543401ND
2023-10-304543399ND
2023-10-304543405ND
2023-10-304543403ND