Know Your Environment. Protect Your Health.

Monochloroacetic acid

Cross Valley Water District

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.

 

90

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND160ND
20190.695 ppb225ND - 4.00 ppb
2020N/A00N/A
20211.58 ppb169ND - 3.40 ppb
20221.04 ppb208ND - 3.00 ppb
20230.731 ppb164ND - 3.20 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
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-01-04ND
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-04-03ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2018-10-24ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-01-10ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-04-09ND
2019-07-03ND
2019-07-03ND
2019-07-03ND
2019-07-03ND
2019-09-04ND
2019-09-043.20 ppb
2019-09-043.20 ppb
2019-10-024.00 ppb
2019-10-02ND
2019-10-02ND
2019-10-02ND
2019-12-172.70 ppb
2019-12-17ND
2019-12-172.20 ppb
2021-03-1740906462.20 ppb
2021-03-174090691ND
2021-03-1740906482.70 ppb
2021-03-174090705ND
2021-05-124114148ND
2021-05-124114142ND
2021-05-1241141442.70 ppb
2021-05-1241141462.10 ppb
2021-07-144145124ND
2021-07-1441451223.10 ppb
2021-07-1441451193.30 ppb
2021-07-1441451172.90 ppb
2021-10-1241977633.40 ppb
2021-10-124197759ND
2021-10-1241977612.80 ppb
2021-10-124197757ND
2022-01-314254441ND
2022-01-314254475ND
2022-01-314254464ND
2022-02-234247423ND
2022-04-2142842832.50 ppb
2022-04-214284279ND
2022-04-2142842812.20 ppb
2022-04-214333167ND
2022-07-2243236882.50 ppb
2022-07-224323690ND
2022-07-2243237052.70 ppb
2022-07-2243237082.80 ppb
2022-08-1043395163.00 ppb
2022-08-1043395192.40 ppb
2022-08-104339512ND
2022-08-1043395232.70 ppb
2022-12-084389374ND
2022-12-084389387ND
2022-12-084389378ND
2022-12-084389382ND
2023-02-164422915ND
2023-02-164422926ND
2023-02-164422913ND
2023-02-164422921ND
2023-04-124439736ND
2023-04-124439761ND
2023-04-124439734ND
2023-04-124439732ND
2023-07-2544908063.20 ppb
2023-07-2544908082.60 ppb
2023-07-254490810ND
2023-07-2544908122.70 ppb
2023-10-2445398043.20 ppb
2023-10-244539820ND
2023-10-244539826ND
2023-10-244539809ND