Know Your Environment. Protect Your Health.

Monochloroacetic acid

Alderwood 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.

 

152

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.39 ppb3216ND - 3.60 ppb
20190.225 ppb323ND - 2.80 ppb
2020N/A00N/A
20211.47 ppb3217ND - 3.60 ppb
20220.953 ppb3212ND - 3.30 ppb
20230.758 ppb247ND - 3.10 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
2018-02-062.40 ppb
2018-02-062.60 ppb
2018-02-062.80 ppb
2018-02-062.60 ppb
2018-02-062.60 ppb
2018-02-062.70 ppb
2018-02-06ND
2018-02-062.50 ppb
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-08-083.60 ppb
2018-08-083.60 ppb
2018-08-082.60 ppb
2018-08-082.80 ppb
2018-08-083.30 ppb
2018-08-08ND
2018-08-082.60 ppb
2018-08-083.10 ppb
2018-11-072.50 ppb
2018-11-072.30 ppb
2018-11-07ND
2018-11-07ND
2018-11-07ND
2018-11-07ND
2018-11-07ND
2018-11-07ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-05-09ND
2019-08-07ND
2019-08-072.40 ppb
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-08-07ND
2019-11-132.80 ppb
2019-11-132.00 ppb
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2021-02-104078084ND
2021-02-1040780883.40 ppb
2021-02-104078082ND
2021-02-104078094ND
2021-02-104078080ND
2021-02-104078092ND
2021-02-104078090ND
2021-02-124078086ND
2021-05-1241190272.70 ppb
2021-05-1241190313.10 ppb
2021-05-1241180512.00 ppb
2021-05-124119029ND
2021-05-1241190173.10 ppb
2021-05-124119019ND
2021-05-1241190232.90 ppb
2021-05-1241190253.10 ppb
2021-08-114159227ND
2021-08-1141592332.50 ppb
2021-08-1141592312.10 ppb
2021-08-1141592292.20 ppb
2021-08-1141592232.70 ppb
2021-08-1141592372.80 ppb
2021-08-1141592352.20 ppb
2021-08-114159225ND
2021-11-0942064783.50 ppb
2021-11-0942064742.30 ppb
2021-11-094206466ND
2021-11-0942064722.90 ppb
2021-11-094206470ND
2021-11-0942064763.60 ppb
2021-11-094206480ND
2021-11-094206468ND
2022-02-094246193ND
2022-02-094246187ND
2022-02-094246189ND
2022-02-094246201ND
2022-02-094246197ND
2022-02-094246191ND
2022-02-094246195ND
2022-02-094246199ND
2022-05-124289362ND
2022-05-124289354ND
2022-05-124289366ND
2022-05-124289368ND
2022-05-124289364ND
2022-05-1242893602.20 ppb
2022-05-124289356ND
2022-05-1242893582.20 ppb
2022-08-1043395442.20 ppb
2022-08-1043395383.20 ppb
2022-08-104339536ND
2022-08-1043395272.60 ppb
2022-08-1043395483.30 ppb
2022-08-1043395302.50 ppb
2022-08-1043395332.60 ppb
2022-08-1043395412.50 ppb
2022-11-0943892502.00 ppb
2022-11-094389292ND
2022-11-094389290ND
2022-11-094389298ND
2022-11-094389295ND
2022-11-0943893042.90 ppb
2022-11-0943892842.30 ppb
2022-11-094389278ND
2023-02-084416025ND
2023-02-084415993ND
2023-02-084415975ND
2023-02-084416040ND
2023-02-084415982ND
2023-02-084416031ND
2023-02-084415988ND
2023-02-084415956ND
2023-05-104457544ND
2023-05-104457535ND
2023-05-104457555ND
2023-05-104457560ND
2023-05-104457540ND
2023-05-104457532ND
2023-05-104457564ND
2023-05-104457550ND
2023-08-0945070373.00 ppb
2023-08-0945070233.10 ppb
2023-08-094507027ND
2023-08-0945070352.00 ppb
2023-08-0945070252.60 ppb
2023-08-0945070332.10 ppb
2023-08-0945070313.10 ppb
2023-08-0945070292.30 ppb