Know Your Environment. Protect Your Health.

Dichloroacetic acid

City of Alto

Dichloroacetic 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)

38

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.96 ppb882.10 ppb - 4.20 ppb
20191.64 ppb86ND - 2.90 ppb
20201.58 ppb87ND - 3.00 ppb
20212.78 ppb881.10 ppb - 6.70 ppb
20221.40 ppb84ND - 4.60 ppb
20230.913 ppb85ND - 1.90 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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. This health guideline protects against cancer and harm to reproduction and child development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-22Q18076340022.60 ppb
2018-02-22Q18076340012.10 ppb
2018-05-29Q18213020102.80 ppb
2018-05-29Q18213020013.40 ppb
2018-08-16Q18329680012.30 ppb
2018-08-16Q18329680022.70 ppb
2018-10-30Q18438790013.60 ppb
2018-10-30Q18438790024.20 ppb
2019-03-20Q19117200042.60 ppb
2019-03-20Q19117200062.70 ppb
2019-05-20Q19270270061.70 ppb
2019-05-20Q1927027007ND
2019-09-19Q1968024002ND
2019-09-19Q19680240011.000 ppb
2019-12-04Q19791940012.20 ppb
2019-12-04Q19791940022.90 ppb
2020-03-23Q20121540011.20 ppb
2020-03-23Q20121540022.60 ppb
2020-05-27Q20211860011.80 ppb
2020-05-27Q20211860021.000 ppb
2020-08-05Q2031226001ND
2020-08-05Q20312260021.000 ppb
2020-10-22Q20411980092.00 ppb
2020-10-22Q20411980103.00 ppb
2021-03-11Q21064640012.20 ppb
2021-03-11Q21064640022.60 ppb
2021-05-11Q21120890011.90 ppb
2021-05-11Q21120890021.10 ppb
2021-08-09Q21209490015.00 ppb
2021-08-09Q21209490026.70 ppb
2021-10-14Q21288450141.20 ppb
2021-10-14Q21288450151.50 ppb
2022-03-03Q2207391010ND
2022-03-03Q2207391011ND
2022-05-16Q22144380014.60 ppb
2022-05-16Q22144380021.70 ppb
2022-08-04Q22223470012.00 ppb
2022-08-04Q22223470022.90 ppb
2022-10-10Q2230465001ND
2022-10-10Q2230465002ND
2023-01-10Q23012180011.50 ppb
2023-01-10Q23012180021.20 ppb
2023-04-20Q2314880009ND
2023-04-20Q23148800101.20 ppb
2023-07-10Q23265450011.50 ppb
2023-07-10Q23265450021.90 ppb
2023-10-24Q2345742001ND
2023-10-24Q2345742002ND