Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Rochester

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.15 ppb442.00 ppb - 4.20 ppb
20192.03 ppb441.40 ppb - 3.20 ppb
20200.450 ppb41ND - 1.80 ppb
20211.63 ppb42ND - 3.70 ppb
2022ND40ND
20234.10 ppb442.50 ppb - 6.00 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
2018-03-21Q18118690043.40 ppb
2018-05-30Q18214830063.00 ppb
2018-09-19Q18376460022.00 ppb
2018-12-06Q18499690014.20 ppb
2019-03-05Q19092010071.80 ppb
2019-05-21Q19273030023.20 ppb
2019-08-22Q19585540021.70 ppb
2019-12-10Q19795310021.40 ppb
2020-03-10Q2009554004ND
2020-05-28Q20211720011.80 ppb
2020-09-15Q2036506002ND
2020-12-02Q2048098001ND
2021-03-09Q21060570043.70 ppb
2021-05-20Q21132350062.80 ppb
2021-09-07Q2124170002ND
2021-11-16Q2132015002ND
2022-03-02Q2207241003ND
2022-05-24Q2215063006ND
2022-09-07Q2226613001ND
2022-11-15Q2234296002ND
2023-03-08Q23091870043.70 ppb
2023-05-16Q23184150024.20 ppb
2023-09-06Q23384550026.00 ppb
2023-11-28Q23506050022.50 ppb