Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Roanoke

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
20181.09 ppb85ND - 2.50 ppb
20191.75 ppb87ND - 2.70 ppb
20201.40 ppb86ND - 2.60 ppb
20210.688 ppb84ND - 1.90 ppb
20220.925 ppb82ND - 6.30 ppb
20233.18 ppb881.80 ppb - 6.40 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
2018-01-08Q1800561002ND
2018-01-08Q1800561001ND
2018-04-11Q18151860022.00 ppb
2018-04-11Q18151860012.50 ppb
2018-07-16Q18281960011.000 ppb
2018-07-16Q1828196003ND
2018-10-17Q18417460011.70 ppb
2018-10-17Q18417460021.50 ppb
2019-02-06Q19056130012.40 ppb
2019-02-06Q19056130022.40 ppb
2019-04-18Q19157170021.60 ppb
2019-04-18Q19157170032.70 ppb
2019-07-29Q19497690021.70 ppb
2019-07-29Q19497690011.60 ppb
2019-10-21Q1973467001ND
2019-10-21Q19734670021.60 ppb
2020-02-03Q20045020012.20 ppb
2020-02-03Q20045020022.60 ppb
2020-05-12Q20184050011.80 ppb
2020-05-12Q20184050021.60 ppb
2020-08-13Q2032283001ND
2020-08-13Q2032283002ND
2020-10-21Q20410780012.00 ppb
2020-10-21Q20410780021.000 ppb
2021-01-27Q21020370011.90 ppb
2021-01-27Q21020370021.30 ppb
2021-04-20Q21101280011.20 ppb
2021-04-20Q21101280021.10 ppb
2021-07-19Q2118849001ND
2021-07-19Q2118849002ND
2021-10-21Q2129767001ND
2021-10-21Q2129767002ND
2022-01-24Q2202293002ND
2022-01-24Q2202293003ND
2022-04-25Q2212332001ND
2022-04-25Q2212332002ND
2022-09-12Q2226979001ND
2022-09-12Q2226979002ND
2022-11-15Q22342760011.10 ppb
2022-11-15Q22342760026.30 ppb
2023-01-17Q23021770012.40 ppb
2023-01-17Q23021770022.00 ppb
2023-04-24Q23152610022.40 ppb
2023-04-24Q23152610032.20 ppb
2023-09-20Q23408610016.40 ppb
2023-09-20Q23408610026.00 ppb
2023-11-30Q23510870011.80 ppb
2023-11-30Q23510870022.20 ppb