Know Your Environment. Protect Your Health.

Trichloroacetic acid

Iola, City of

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

47

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.801 ppb880.610 ppb - 1.10 ppb
20191.31 ppb880.640 ppb - 1.70 ppb
20201.16 ppb880.800 ppb - 1.40 ppb
20211.93 ppb881.20 ppb - 2.70 ppb
20221.16 ppb87ND - 2.70 ppb
20232.18 ppb881.40 ppb - 3.70 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
2018-02-129080460.740 ppb
2018-02-129080470.680 ppb
2018-05-149708750.640 ppb
2018-05-149708760.610 ppb
2018-08-1310253390.790 ppb
2018-08-1310253400.970 ppb
2018-11-1210763131.10 ppb
2018-11-1210763140.880 ppb
2019-02-0411143391.10 ppb
2019-02-0411143401.10 ppb
2019-05-0611577781.20 ppb
2019-05-0611577791.70 ppb
2019-08-0512158861.60 ppb
2019-08-0512158871.60 ppb
2019-11-0412687761.50 ppb
2019-11-0412687750.640 ppb
2020-02-0313184101.40 ppb
2020-02-0313184121.40 ppb
2020-05-1113750671.30 ppb
2020-05-1113750660.940 ppb
2020-08-1014853931.30 ppb
2020-08-1014853911.30 ppb
2020-11-0216326630.800 ppb
2020-11-0216326650.860 ppb
2021-02-0117603412.50 ppb
2021-02-0117603421.80 ppb
2021-05-0318294932.00 ppb
2021-05-0318294922.40 ppb
2021-08-0219016421.30 ppb
2021-08-0219016431.20 ppb
2021-11-1520277572.70 ppb
2021-11-2220355461.50 ppb
2022-02-1421948470.610 ppb
2022-02-142194846ND
2022-05-0922554222.40 ppb
2022-05-0922554232.70 ppb
2022-08-0823293740.810 ppb
2022-08-0823293750.680 ppb
2022-11-2124023950.860 ppb
2022-11-2124023961.20 ppb
2023-02-1324502873.60 ppb
2023-02-1324502863.70 ppb
2023-05-0824979081.50 ppb
2023-05-0824979071.60 ppb
2023-08-1425582091.50 ppb
2023-08-1425582101.40 ppb
2023-11-0626074781.60 ppb
2023-11-0626074792.50 ppb