Know Your Environment. Protect Your Health.

Trichloroacetic acid

Zachary 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.

 

128

Samples

0

Samples exceeding legal limit (MCL)

115

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.781 ppb3222ND - 1.90 ppb
20191.16 ppb32320.600 ppb - 2.10 ppb
20201.08 ppb16160.570 ppb - 2.10 ppb
20210.881 ppb1615ND - 2.20 ppb
20220.919 ppb1614ND - 1.70 ppb
20231.39 ppb16160.640 ppb - 2.50 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
2018-02-0135371906001ND
2018-02-01353719060021.90 ppb
2018-02-0135371906003ND
2018-02-01353719060040.980 ppb
2018-02-0135371906001ND
2018-02-01353719060021.90 ppb
2018-02-0135371906003ND
2018-02-01353719060040.980 ppb
2018-05-04353903350011.10 ppb
2018-05-04353903350021.70 ppb
2018-05-04353903350030.810 ppb
2018-05-04353903350041.10 ppb
2018-05-04353903350011.10 ppb
2018-05-04353903350021.70 ppb
2018-05-04353903350030.810 ppb
2018-05-04353903350041.10 ppb
2018-08-1735412007001ND
2018-08-17354120070021.80 ppb
2018-08-1735412007003ND
2018-08-1735412007004ND
2018-08-1735412007001ND
2018-08-17354120070021.80 ppb
2018-08-1735412007003ND
2018-08-1735412007004ND
2018-11-02354282050010.730 ppb
2018-11-02354282050020.740 ppb
2018-11-02354282050030.700 ppb
2018-11-02354282050040.930 ppb
2018-11-02354282050010.730 ppb
2018-11-02354282050020.740 ppb
2018-11-02354282050030.700 ppb
2018-11-02354282050040.930 ppb
2019-02-01354457550011.40 ppb
2019-02-01354457550022.10 ppb
2019-02-01354457550030.900 ppb
2019-02-01354457550040.970 ppb
2019-02-01354457550011.40 ppb
2019-02-01354457550022.10 ppb
2019-02-01354457550030.900 ppb
2019-02-01354457550040.970 ppb
2019-05-01354654080010.950 ppb
2019-05-01354654080021.80 ppb
2019-05-01354654080030.920 ppb
2019-05-01354654080040.880 ppb
2019-05-01354654080010.950 ppb
2019-05-01354654080021.80 ppb
2019-05-01354654080030.920 ppb
2019-05-01354654080040.880 ppb
2019-08-19354939800010.850 ppb
2019-08-19354939800021.40 ppb
2019-08-19354939800030.600 ppb
2019-08-19354939800040.910 ppb
2019-08-19354939800010.850 ppb
2019-08-19354939800021.40 ppb
2019-08-19354939800030.600 ppb
2019-08-19354939800040.910 ppb
2019-11-05355108750010.740 ppb
2019-11-05355108750021.70 ppb
2019-11-05355108750031.10 ppb
2019-11-05355108750041.30 ppb
2019-11-05355108750010.740 ppb
2019-11-05355108750021.70 ppb
2019-11-05355108750031.10 ppb
2019-11-05355108750041.30 ppb
2020-02-03355293490011.10 ppb
2020-02-03355293490021.40 ppb
2020-02-03355293490030.960 ppb
2020-02-03355293490041.30 ppb
2020-05-04355480190010.720 ppb
2020-05-04355480190021.000 ppb
2020-05-04355480190030.570 ppb
2020-05-04355480190040.790 ppb
2020-08-03355680150010.790 ppb
2020-08-03355680150021.10 ppb
2020-08-03355680150031.10 ppb
2020-08-03355680150040.880 ppb
2020-11-04355905280011.20 ppb
2020-11-04355905280022.10 ppb
2020-11-04355905280031.000 ppb
2020-11-04355905280041.30 ppb
2021-02-01356100660010.610 ppb
2021-02-01356100660020.650 ppb
2021-02-01356100660032.20 ppb
2021-02-01356100660040.710 ppb
2021-05-03356316890010.470 ppb
2021-05-03356316890020.900 ppb
2021-05-03356316890030.390 ppb
2021-05-03356316890040.580 ppb
2021-08-02356543060011.20 ppb
2021-08-02356543060021.20 ppb
2021-08-02356543060031.10 ppb
2021-08-0235654306004ND
2021-11-02356766420010.610 ppb
2021-11-02356766420021.20 ppb
2021-11-02356766420031.50 ppb
2021-11-02356766420040.780 ppb
2022-02-0235696677001ND
2022-02-02356966770020.810 ppb
2022-02-02356966770030.810 ppb
2022-02-02356966770040.850 ppb
2022-05-02357154310010.870 ppb
2022-05-02357154310021.70 ppb
2022-05-02357154310030.800 ppb
2022-05-02357154310040.760 ppb
2022-08-01357369730011.40 ppb
2022-08-01357369730021.70 ppb
2022-08-01357369730030.940 ppb
2022-08-01357369730040.830 ppb
2022-11-0135758147001ND
2022-11-01357581470021.50 ppb
2022-11-01357581470030.630 ppb
2022-11-01357581470041.10 ppb
2023-02-06357781730010.640 ppb
2023-02-06357781730022.50 ppb
2023-02-06357781730032.10 ppb
2023-02-06357781730041.40 ppb
2023-05-08357989880011.10 ppb
2023-05-08357989880021.80 ppb
2023-05-08357989880030.900 ppb
2023-05-08357989880041.10 ppb
2023-08-01358177240011.10 ppb
2023-08-01358177240021.90 ppb
2023-08-01358177240030.920 ppb
2023-08-01358177240041.10 ppb
2023-11-06358405320011.20 ppb
2023-11-06358405320022.10 ppb
2023-11-06358405320031.10 ppb
2023-11-06358405320041.30 ppb