Know Your Environment. Protect Your Health.

Monochloroacetic acid

London 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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.46 ppb84ND - 3.50 ppb
20192.73 ppb86ND - 4.80 ppb
20200.975 ppb83ND - 2.90 ppb
20211.06 ppb83ND - 3.20 ppb
20221.21 ppb83ND - 4.00 ppb
20230.698 ppb82ND - 3.02 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
2018-02-0618039008501ND
2018-02-0618039008401ND
2018-05-01181220021013.50 ppb
2018-05-01181220022013.20 ppb
2018-07-3118213001001ND
2018-07-3118213001301ND
2018-10-29183050042012.40 ppb
2018-10-29183050043012.60 ppb
2019-01-28190310094012.40 ppb
2019-01-28190310095012.70 ppb
2019-04-24191150113013.70 ppb
2019-04-24191150114014.20 ppb
2019-07-22192060100014.00 ppb
2019-07-22192060101014.80 ppb
2019-10-1519290013901ND
2019-10-1519290014001ND
2020-01-2220023012501ND
2020-01-2220023012401ND
2020-04-20201140061012.50 ppb
2020-04-20201140062012.40 ppb
2020-07-2020205001901ND
2020-07-2020205002001ND
2020-10-1920296001801ND
2020-10-19202960019012.90 ppb
2021-01-2021021004901ND
2021-01-2021021005001ND
2021-04-20211120131012.90 ppb
2021-04-20211120130013.20 ppb
2021-07-1921203001601ND
2021-07-19212030015012.40 ppb
2021-10-1921294003301ND
2021-10-1921294003201ND
2022-01-18220200081013.50 ppb
2022-01-18220200082014.00 ppb
2022-04-20O197493-HAA-12.16 ppb
2022-04-20O197494-HAA-1ND
2022-07-19O199941-HAA-1ND
2022-07-19O199942-HAA-1ND
2022-10-17O202890-HAA-1ND
2022-10-17O202889-HAA-1ND
2023-02-21O206637-HAA-1ND
2023-02-21O206638-HAA-1ND
2023-04-18O208016-HAA-13.02 ppb
2023-04-19O208015-HAA-12.56 ppb
2023-07-17O210864-HAA-1ND
2023-07-17O210863-HAA-1ND
2023-10-23O213059-HAA-1ND
2023-10-23O213058-HAA-1ND