Know Your Environment. Protect Your Health.

Monochloroacetic acid

Lisbon Water System

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.513 ppb164ND - 2.10 ppb
20191.36 ppb1612ND - 2.70 ppb
20201.08 ppb86ND - 1.80 ppb
20210.840 ppb85ND - 1.90 ppb
20220.706 ppb85ND - 1.60 ppb
20230.576 ppb84ND - 1.40 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
2018-01-2235370652002ND
2018-01-2235370652001ND
2018-01-2235370652002ND
2018-01-2235370652001ND
2018-04-1235386428001ND
2018-04-1235386428002ND
2018-04-1235386428002ND
2018-04-1235386428001ND
2018-07-0235402623001ND
2018-07-0235402623002ND
2018-07-0235402623002ND
2018-07-0235402623001ND
2018-10-01354225500012.10 ppb
2018-10-01354225500022.00 ppb
2018-10-01354225500022.00 ppb
2018-10-01354225500012.10 ppb
2019-01-07354418160022.60 ppb
2019-01-07354418160012.70 ppb
2019-01-07354418160022.60 ppb
2019-01-07354418160012.70 ppb
2019-04-08354615420021.40 ppb
2019-04-08354615420021.40 ppb
2019-04-08354615420011.60 ppb
2019-04-08354615420011.60 ppb
2019-07-0835481739002ND
2019-07-0835481739001ND
2019-07-0835481739001ND
2019-07-0835481739002ND
2019-10-14355058000011.10 ppb
2019-10-14355058000011.10 ppb
2019-10-23355072470011.50 ppb
2019-10-23355072470011.50 ppb
2020-01-06355226340021.20 ppb
2020-01-06355226340011.40 ppb
2020-04-21355455080011.80 ppb
2020-04-21355455080021.80 ppb
2020-07-10355624020011.20 ppb
2020-07-10355624020021.20 ppb
2020-10-2035586456001ND
2020-10-2035586456002ND
2021-01-15356052470011.40 ppb
2021-01-15356052470020.920 ppb
2021-04-2735629786001ND
2021-04-27356297860021.90 ppb
2021-07-27356517080011.50 ppb
2021-07-27356517080021.000 ppb
2021-10-2035674035001ND
2021-10-2035674035002ND
2022-01-25356935300020.930 ppb
2022-01-25356935300010.920 ppb
2022-04-12357105780021.10 ppb
2022-04-12357105780011.10 ppb
2022-07-18357336860011.60 ppb
2022-07-1835733686002ND
2022-10-2135755611001ND
2022-10-2135755611002ND
2023-01-0535770996001ND
2023-01-0535770996002ND
2023-04-24357956720021.40 ppb
2023-04-25357956720010.910 ppb
2023-07-26358164360011.20 ppb
2023-08-2135823462001ND
2023-10-2035836319001ND
2023-10-20358363190021.10 ppb