Know Your Environment. Protect Your Health.

Monochloroacetic acid

Westchester County Water District #3

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.

 

60

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.470 ppb83ND - 1.38 ppb
20190.309 ppb82ND - 1.33 ppb
20200.455 ppb113ND - 3.00 ppb
20211.09 ppb117ND - 3.00 ppb
20220.273 ppb111ND - 3.00 ppb
2023ND110ND

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
2018-01-16AU01109DBP2ND
2018-01-16AU01108DBP2ND
2018-04-18AU07841DBP21.02 ppb
2018-04-18AU07842DBP21.38 ppb
2018-07-18AU15167DBP2ND
2018-07-18AU15168DBP21.36 ppb
2018-10-18AU22697DBP2ND
2018-10-18AU22696DBP2ND
2019-01-17AV01310DBP2ND
2019-01-17AV01311DBP2ND
2019-04-17AV07774DBP2ND
2019-04-17AV07775DBP2ND
2019-07-17AV14907-DBP2ND
2019-07-17AV14906-DBP2ND
2019-10-16AV21954DBP21.14 ppb
2019-10-16AV21955DBP21.33 ppb
2020-01-15AW01054DBP2ND
2020-01-15AW01055DBP2ND
2020-04-15AW07106DBP2ND
2020-04-15AW07105DBP2ND
2020-04-28AW07856DBP2ND
2020-07-15AW13392DBP2ND
2020-07-15AW13393DBP2ND
2020-10-21AW20383DBP23.00 ppb
2020-10-21AW20384DBP2ND
2020-12-15AW23891-DBP21.000 ppb
2020-12-15AW23893-DBP21.000 ppb
2021-01-19AX01186-DBP2ND
2021-01-19AX01185-DBP23.00 ppb
2021-04-06AX06359-DBP21.000 ppb
2021-04-16AX07177-DBP21.000 ppb
2021-04-16AX07178-DBP2ND
2021-07-15AX13994-DBP21.000 ppb
2021-07-15AX13993-DBP2ND
2021-10-15AZ20954-DBP22.00 ppb
2021-10-15AX20953-DBP2ND
2021-11-09AX22573-DBP22.00 ppb
2021-11-09AX22576-DBP22.00 ppb
2022-01-14A700807-DBP2ND
2022-01-14AY00806-DBP2ND
2022-04-11AY05984-DBP2ND
2022-04-15AY06299-DBP2ND
2022-04-15AY06300-DBP2ND
2022-07-15AY12285-DBP2ND
2022-07-15AY12284-DBP2ND
2022-10-17AY18659-DBP23.00 ppb
2022-10-17AY18647-DBP2ND
2022-11-01AY19681-DBP2ND
2022-11-01AY19679-DBP2ND
2023-01-17AZ00971-DBP2ND
2023-01-17AZ00947-DBP2ND
2023-04-17AZ06833-DBP2ND
2023-04-17AZ06831-DBP2ND
2023-04-25AZ07359-DBP2ND
2023-07-17AZ12818-DBP2ND
2023-07-17AZ12814-DBP2ND
2023-10-17AZ19180-DBP2ND
2023-10-17AZ19177-DBP2ND
2023-11-01AZ20240-DBP2ND
2023-11-01AZ20238-DBP2ND