Know Your Environment. Protect Your Health.

Trichloroacetic acid

Markridge Park Subdivision Water System

Trichloroacetic 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
20200.150 ppb21ND - 0.300 ppb
2021ND20ND
20220.335 ppb220.300 ppb - 0.370 ppb
20230.650 ppb220.520 ppb - 0.780 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic 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
2018-08-1635412027001ND
2018-08-1635412027002ND
2018-08-1635412027001ND
2018-08-1635412027002ND
2019-08-0835489002001ND
2019-08-0835489002002ND
2019-08-0835489002001ND
2019-08-0835489002002ND
2020-08-1435570889001ND
2020-08-14355708890020.300 ppb
2021-08-0235652760001ND
2021-08-0235652760002ND
2022-08-26357429770010.300 ppb
2022-08-26357429770020.370 ppb
2023-08-15358219850010.520 ppb
2023-08-15358219850020.780 ppb