Know Your Environment. Protect Your Health.

Dichloroacetic acid

El Paso County Tornillo Water Improvement District

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppb21ND - 1.000 ppb
2019ND20ND
2020ND20ND
20211.30 ppb221.30 ppb
20220.650 ppb21ND - 1.30 ppb
20231.40 ppb221.30 ppb - 1.50 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
2018-05-01Q18177310031.000 ppb
2018-05-01Q1817731004ND
2019-05-30Q1930373003ND
2019-05-30Q1930373004ND
2020-06-17Q2024621002ND
2020-06-17Q2024621003ND
2021-05-13Q21125360031.30 ppb
2021-05-13Q21125360041.30 ppb
2022-05-05Q22137100021.30 ppb
2022-05-05Q2213710003ND
2023-05-15Q23182420021.30 ppb
2023-05-15Q23182420031.50 ppb