Know Your Environment. Protect Your Health.

Monochloroacetic acid

South Norwalk Electric and Water

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.488 ppb168ND - 1.20 ppb
20190.0813 ppb162ND - 0.700 ppb
20200.294 ppb166ND - 1.40 ppb
20210.305 ppb165ND - 1.04 ppb
20220.763 ppb1612ND - 1.40 ppb
20230.650 ppb1610ND - 1.50 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
2018-02-0618020626-HAA50.700 ppb
2018-02-0618020632-HAA51.20 ppb
2018-02-0618020637-HAA51.20 ppb
2018-02-0618020622-HAA51.000 ppb
2018-05-0918050922-HAA51.10 ppb
2018-05-0918050926-HAA5ND
2018-05-0918050932-HAA50.800 ppb
2018-05-0918050937-HAA5ND
2018-08-0718080722-HAA5ND
2018-08-0718080726-HAA5ND
2018-08-0718080732-HAA5ND
2018-08-0718080737-HAA5ND
2018-11-0618110626-HAA5ND
2018-11-0618110632-HAA51.000 ppb
2018-11-0618110622-HAA50.800 ppb
2018-11-2918112937-HAA5ND
2019-02-1319021322-HAA50.700 ppb
2019-02-1319021326-HAA5ND
2019-02-1319021332-HAA50.600 ppb
2019-02-1319021337-HAA5ND
2019-05-0719050722-HAA5ND
2019-05-0719050726-HAA5ND
2019-05-0719050732-HAA5ND
2019-05-0719050737-HAA5ND
2019-08-0619080626-HAA5ND
2019-08-0619080639-HAA5ND
2019-08-0619080632-HAA5ND
2019-08-0619080622-HAA5ND
2019-11-1319111326-HAA5ND
2019-11-1319111332-HAA5ND
2019-11-1319111339-HAA5ND
2019-11-1319111322-HAA5ND
2020-02-1220021222-HAA5ND
2020-02-1220021226-HAA5ND
2020-02-1220021232-HAA5ND
2020-02-1220021239-HAA5ND
2020-05-1220051232-HAA50.600 ppb
2020-05-1220051239-HAA5ND
2020-05-1220051226-HAA5ND
2020-05-1220051222-HAA50.500 ppb
2020-08-1120081122-HAA51.40 ppb
2020-08-1120081126-HAA5ND
2020-08-1120081132-HAA51.000 ppb
2020-08-1120081139-HAA5ND
2020-11-1020111022-HAA50.600 ppb
2020-11-1020111026-HAA5ND
2020-11-1020111032-HAA50.600 ppb
2020-11-1020111039-HAA5ND
2021-02-1021021039-HAA5ND
2021-02-1021021022-HAA5ND
2021-02-1021021026-HAA5ND
2021-02-1021021032-HAA5ND
2021-05-1221051226-HAA5ND
2021-05-1221051232-HAA51.000 ppb
2021-05-1221051239-HAA5ND
2021-05-1221051222-HAA51.000 ppb
2021-08-1121081122-HAA5ND
2021-08-1121081126-HAA5ND
2021-08-1121081132-HAA5ND
2021-08-1121081139-HAA5ND
2021-11-0921110939-HAA51.04 ppb
2021-11-0921110932-HAA51.02 ppb
2021-11-0921110926-HAA5ND
2021-11-0921110922-HAA50.820 ppb
2022-02-0922020922-HAA50.800 ppb
2022-02-0922020926-HAA50.600 ppb
2022-02-0922020932-HAA51.000 ppb
2022-02-0922020939-HAA5ND
2022-05-1022051022-HAA51.40 ppb
2022-05-1022051026-HAA50.800 ppb
2022-05-1022051032-HAA51.000 ppb
2022-05-1022051039-HAA50.900 ppb
2022-08-0922080939-HAA5ND
2022-08-0922080926-HAA5ND
2022-08-0922080922-HAA51.000 ppb
2022-08-0922080932-HAA50.900 ppb
2022-11-1522111522-HAA51.40 ppb
2022-11-1522111526-HAA5ND
2022-11-1522111532-HAA51.40 ppb
2022-11-1522111539-HAA51.000 ppb
2023-02-0723020722-HAA50.800 ppb
2023-02-0723020726-HAA50.800 ppb
2023-02-0723020732-HAA51.000 ppb
2023-02-0723020739-HAA51.000 ppb
2023-05-1623051626-HAA51.30 ppb
2023-05-1623051639-HAA50.800 ppb
2023-05-1623051632-HAA51.50 ppb
2023-05-1623051622-HAA50.900 ppb
2023-08-0823080822-HAA5ND
2023-08-0823080826-HAA5ND
2023-08-0823080832-HAA5ND
2023-08-0823080839-HAA5ND
2023-11-1423111422-HAA51.10 ppb
2023-11-1423111426-HAA5ND
2023-11-1423111432-HAA51.20 ppb
2023-11-1423111439-HAA5ND