Know Your Environment. Protect Your Health.

Monochloroacetic acid

Multi-county Water Supply Corporation

NOTE: Multi-county Water Supply Corporation purchases water from City of Hamilton which is required to test for monochloroacetic acid. Sample information shown below was taken by City of Hamilton.

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

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

NOTE: Multi-county Water Supply Corporation purchases water from City of Hamilton which is required to test for monochloroacetic acid. Sample information shown below was taken by City of Hamilton.

Date Lab ID Result
2018-02-27AE15996ND
2018-02-27AE15976ND
2018-05-07AE25312ND
2018-05-07AE25313ND
2018-08-23AE38255ND
2018-08-23AE38256ND
2018-11-06AE45354ND
2018-11-06AE45355ND
2019-02-28AE56541ND
2019-02-28AE56542ND
2019-05-07AE65154ND
2019-05-07AE65156ND
2019-08-06AE77187ND
2019-08-06AE771942.70 ppb
2019-10-22AE8717911.0 ppb
2019-10-22AE871818.00 ppb
2020-01-16AE93938ND
2020-01-16AE93941ND
2020-05-04AF09091ND
2020-07-07AF18201ND
2020-11-09AF33587ND
2021-03-01AF44620ND
2021-05-06AF52722ND
2021-07-08AF61064ND
2021-10-07AF72536ND
2022-01-27AF82195ND
2022-04-14AF93351ND
2022-07-14AG04681ND
2022-10-20AG17780ND
2023-01-11AG24003ND
2023-04-06AG35774ND
2023-08-24AG53943ND
2023-10-11AG59404ND