Know Your Environment. Protect Your Health.

Trichloroacetic acid

Lafayette Utilities 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.

 

192

Samples

0

Samples exceeding legal limit (MCL)

162

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.951 ppb4842ND - 2.70 ppb
20191.03 ppb4842ND - 2.70 ppb
20200.634 ppb2419ND - 1.70 ppb
20210.603 ppb2419ND - 1.60 ppb
20220.779 ppb2422ND - 1.40 ppb
20230.901 ppb2418ND - 2.40 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
2018-01-12353683960010.790 ppb
2018-01-1235368396002ND
2018-01-1235368396003ND
2018-01-1235368396004ND
2018-01-12353683960051.90 ppb
2018-01-12353683960061.80 ppb
2018-01-12353683960010.790 ppb
2018-01-1235368396002ND
2018-01-1235368396003ND
2018-01-1235368396004ND
2018-01-12353683960051.90 ppb
2018-01-12353683960061.80 ppb
2018-04-05353846770011.20 ppb
2018-04-05353846770020.760 ppb
2018-04-05353846770030.730 ppb
2018-04-05353846770041.10 ppb
2018-04-05353846770052.70 ppb
2018-04-05353846770060.730 ppb
2018-04-05353846770011.20 ppb
2018-04-05353846770020.760 ppb
2018-04-05353846770030.730 ppb
2018-04-05353846770041.10 ppb
2018-04-05353846770052.70 ppb
2018-04-05353846770060.730 ppb
2018-07-31354078980011.40 ppb
2018-07-31354078980020.820 ppb
2018-07-31354078980030.820 ppb
2018-07-31354078980041.40 ppb
2018-07-31354078980050.820 ppb
2018-07-31354078980060.810 ppb
2018-07-31354078980011.40 ppb
2018-07-31354078980020.820 ppb
2018-07-31354078980030.820 ppb
2018-07-31354078980041.40 ppb
2018-07-31354078980050.820 ppb
2018-07-31354078980060.810 ppb
2018-10-18354254280011.20 ppb
2018-10-18354254280020.450 ppb
2018-10-18354254280030.440 ppb
2018-10-18354254280040.770 ppb
2018-10-18354254280051.40 ppb
2018-10-18354254280060.780 ppb
2018-10-18354254280011.20 ppb
2018-10-18354254280020.450 ppb
2018-10-18354254280030.440 ppb
2018-10-18354254280040.770 ppb
2018-10-18354254280051.40 ppb
2018-10-18354254280060.780 ppb
2019-01-10354418630011.40 ppb
2019-01-10354418630020.880 ppb
2019-01-10354418630030.660 ppb
2019-01-10354418630041.20 ppb
2019-01-10354418630051.80 ppb
2019-01-10354418630061.30 ppb
2019-01-10354418630011.40 ppb
2019-01-10354418630020.880 ppb
2019-01-10354418630030.660 ppb
2019-01-10354418630041.20 ppb
2019-01-10354418630051.80 ppb
2019-01-10354418630061.30 ppb
2019-04-11354615510011.40 ppb
2019-04-11354615510020.650 ppb
2019-04-11354615510030.650 ppb
2019-04-11354615510040.940 ppb
2019-04-11354615510052.70 ppb
2019-04-11354615510060.910 ppb
2019-04-11354615510011.40 ppb
2019-04-11354615510020.650 ppb
2019-04-11354615510030.650 ppb
2019-04-11354615510040.940 ppb
2019-04-11354615510052.70 ppb
2019-04-11354615510060.910 ppb
2019-07-19354837950011.40 ppb
2019-07-1935483795002ND
2019-07-1935483795003ND
2019-07-19354837950040.810 ppb
2019-07-19354837950052.20 ppb
2019-07-19354837950060.840 ppb
2019-07-19354837950011.40 ppb
2019-07-1935483795002ND
2019-07-1935483795003ND
2019-07-19354837950040.810 ppb
2019-07-19354837950052.20 ppb
2019-07-19354837950060.840 ppb
2019-10-18355062600011.30 ppb
2019-10-18355062600020.430 ppb
2019-10-1835506260003ND
2019-10-18355062600040.710 ppb
2019-10-18355062600052.00 ppb
2019-10-18355062600060.570 ppb
2019-10-18355062600011.30 ppb
2019-10-18355062600020.430 ppb
2019-10-1835506260003ND
2019-10-18355062600040.710 ppb
2019-10-18355062600052.00 ppb
2019-10-18355062600060.570 ppb
2020-01-03355219140011.20 ppb
2020-01-03355219140020.660 ppb
2020-01-03355219140030.670 ppb
2020-01-03355219140040.890 ppb
2020-01-03355219140051.40 ppb
2020-01-03355219140060.530 ppb
2020-04-17355445730010.550 ppb
2020-04-1735544573002ND
2020-04-1735544573003ND
2020-04-1735544573004ND
2020-04-17355445730050.340 ppb
2020-04-1735544573006ND
2020-07-17355642400011.30 ppb
2020-07-17355642400020.280 ppb
2020-07-1735564240003ND
2020-07-17355642400040.430 ppb
2020-07-17355642400050.780 ppb
2020-07-17355642400060.360 ppb
2020-10-23355872450011.70 ppb
2020-10-23355872450020.590 ppb
2020-10-23355872450030.420 ppb
2020-10-23355872450040.880 ppb
2020-10-23355872450051.40 ppb
2020-10-23355872450060.830 ppb
2021-01-21356067160011.10 ppb
2021-01-21356067160020.320 ppb
2021-01-21356067160030.320 ppb
2021-01-21356067160040.470 ppb
2021-01-21356067160050.910 ppb
2021-01-21356067160060.430 ppb
2021-04-15356268250010.770 ppb
2021-04-1535626825002ND
2021-04-1535626825003ND
2021-04-1535626825004ND
2021-04-1535626825005ND
2021-04-1535626825006ND
2021-07-16356485450011.60 ppb
2021-07-16356485450020.620 ppb
2021-07-16356485450030.670 ppb
2021-07-16356485450041.10 ppb
2021-07-16356485450050.960 ppb
2021-07-16356485450061.10 ppb
2021-10-08356705580011.20 ppb
2021-10-08356705580020.380 ppb
2021-10-08356705580030.350 ppb
2021-10-08356705580040.530 ppb
2021-10-08356705580051.10 ppb
2021-10-08356705580060.550 ppb
2022-01-07356892170011.20 ppb
2022-01-07356892170020.630 ppb
2022-01-07356892170030.540 ppb
2022-01-07356892170040.740 ppb
2022-01-07356892170051.40 ppb
2022-01-07356892170060.690 ppb
2022-04-01357074910010.980 ppb
2022-04-01357074910020.350 ppb
2022-04-01357074910030.310 ppb
2022-04-01357074910040.580 ppb
2022-04-01357074910050.660 ppb
2022-04-01357074910060.580 ppb
2022-07-14357319890010.830 ppb
2022-07-14357319890021.40 ppb
2022-07-14357319890030.660 ppb
2022-07-14357319890040.840 ppb
2022-07-14357319890051.20 ppb
2022-07-14357319890061.40 ppb
2022-10-07357518630011.40 ppb
2022-10-0735751863002ND
2022-10-0735751863003ND
2022-10-07357518630040.650 ppb
2022-10-07357518630050.980 ppb
2022-10-07357518630060.670 ppb
2023-01-12357728070011.90 ppb
2023-01-12357728070020.920 ppb
2023-01-12357728070031.10 ppb
2023-01-12357728070041.70 ppb
2023-01-12357728070051.30 ppb
2023-01-12357728070061.70 ppb
2023-04-14357929000011.40 ppb
2023-04-1435792900002ND
2023-04-1435792900003ND
2023-04-14357929000040.700 ppb
2023-04-14357929000051.000 ppb
2023-04-14357929000060.670 ppb
2023-07-07358114360011.40 ppb
2023-07-0735811436002ND
2023-07-0735811436003ND
2023-07-07358114360040.570 ppb
2023-07-07358114360051.000 ppb
2023-07-07358114360060.440 ppb
2023-10-13358346660011.60 ppb
2023-10-1335834666002ND
2023-10-1335834666003ND
2023-10-13358346660040.940 ppb
2023-10-13358346660052.40 ppb
2023-10-13358346660060.880 ppb