Know Your Environment. Protect Your Health.

Dichloroacetic acid

Lafayette Utilities Water System

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.

 

192

Samples

0

Samples exceeding legal limit (MCL)

175

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.57 ppb48480.790 ppb - 3.10 ppb
20192.22 ppb48480.830 ppb - 8.50 ppb
20200.738 ppb2418ND - 1.90 ppb
20211.10 ppb2423ND - 2.50 ppb
20221.12 ppb2420ND - 1.80 ppb
20230.764 ppb2418ND - 2.00 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
2018-01-12353683960011.000 ppb
2018-01-12353683960020.870 ppb
2018-01-12353683960032.10 ppb
2018-01-12353683960043.10 ppb
2018-01-12353683960051.70 ppb
2018-01-12353683960061.80 ppb
2018-01-12353683960011.000 ppb
2018-01-12353683960020.870 ppb
2018-01-12353683960032.10 ppb
2018-01-12353683960043.10 ppb
2018-01-12353683960051.70 ppb
2018-01-12353683960061.80 ppb
2018-04-05353846770011.20 ppb
2018-04-05353846770020.920 ppb
2018-04-05353846770030.810 ppb
2018-04-05353846770041.30 ppb
2018-04-05353846770052.10 ppb
2018-04-05353846770060.800 ppb
2018-04-05353846770011.20 ppb
2018-04-05353846770020.920 ppb
2018-04-05353846770030.810 ppb
2018-04-05353846770041.30 ppb
2018-04-05353846770052.10 ppb
2018-04-05353846770060.800 ppb
2018-07-31354078980012.60 ppb
2018-07-31354078980022.00 ppb
2018-07-31354078980031.80 ppb
2018-07-31354078980042.40 ppb
2018-07-31354078980052.00 ppb
2018-07-31354078980061.80 ppb
2018-07-31354078980012.60 ppb
2018-07-31354078980022.00 ppb
2018-07-31354078980031.80 ppb
2018-07-31354078980042.40 ppb
2018-07-31354078980052.00 ppb
2018-07-31354078980061.80 ppb
2018-10-18354254280011.60 ppb
2018-10-18354254280020.980 ppb
2018-10-18354254280030.790 ppb
2018-10-18354254280041.20 ppb
2018-10-18354254280051.70 ppb
2018-10-18354254280061.20 ppb
2018-10-18354254280011.60 ppb
2018-10-18354254280020.980 ppb
2018-10-18354254280030.790 ppb
2018-10-18354254280041.20 ppb
2018-10-18354254280051.70 ppb
2018-10-18354254280061.20 ppb
2019-01-10354418630012.10 ppb
2019-01-10354418630021.80 ppb
2019-01-10354418630031.70 ppb
2019-01-10354418630042.10 ppb
2019-01-10354418630052.60 ppb
2019-01-10354418630062.00 ppb
2019-01-10354418630012.10 ppb
2019-01-10354418630021.80 ppb
2019-01-10354418630031.70 ppb
2019-01-10354418630042.10 ppb
2019-01-10354418630052.60 ppb
2019-01-10354418630062.00 ppb
2019-04-11354615510011.50 ppb
2019-04-11354615510020.990 ppb
2019-04-11354615510030.890 ppb
2019-04-11354615510041.30 ppb
2019-04-11354615510052.90 ppb
2019-04-11354615510061.40 ppb
2019-04-11354615510011.50 ppb
2019-04-11354615510020.990 ppb
2019-04-11354615510030.890 ppb
2019-04-11354615510041.30 ppb
2019-04-11354615510052.90 ppb
2019-04-11354615510061.40 ppb
2019-07-19354837950013.00 ppb
2019-07-19354837950021.70 ppb
2019-07-19354837950031.60 ppb
2019-07-19354837950042.20 ppb
2019-07-19354837950052.50 ppb
2019-07-19354837950065.00 ppb
2019-07-19354837950013.00 ppb
2019-07-19354837950021.70 ppb
2019-07-19354837950031.60 ppb
2019-07-19354837950042.20 ppb
2019-07-19354837950052.50 ppb
2019-07-19354837950065.00 ppb
2019-10-18355062600011.90 ppb
2019-10-18355062600021.20 ppb
2019-10-18355062600030.830 ppb
2019-10-18355062600041.40 ppb
2019-10-18355062600052.20 ppb
2019-10-18355062600068.50 ppb
2019-10-18355062600011.90 ppb
2019-10-18355062600021.20 ppb
2019-10-18355062600030.830 ppb
2019-10-18355062600041.40 ppb
2019-10-18355062600052.20 ppb
2019-10-18355062600068.50 ppb
2020-01-0335521914001ND
2020-01-0335521914002ND
2020-01-0335521914003ND
2020-01-0335521914004ND
2020-01-0335521914005ND
2020-01-0335521914006ND
2020-04-17355445730011.30 ppb
2020-04-17355445730020.620 ppb
2020-04-17355445730030.540 ppb
2020-04-17355445730040.800 ppb
2020-04-17355445730050.870 ppb
2020-04-17355445730061.90 ppb
2020-07-17355642400011.50 ppb
2020-07-17355642400020.690 ppb
2020-07-17355642400030.510 ppb
2020-07-17355642400040.740 ppb
2020-07-17355642400050.810 ppb
2020-07-17355642400060.560 ppb
2020-10-23355872450011.70 ppb
2020-10-23355872450020.860 ppb
2020-10-23355872450030.720 ppb
2020-10-23355872450041.20 ppb
2020-10-23355872450051.20 ppb
2020-10-23355872450061.20 ppb
2021-01-21356067160011.10 ppb
2021-01-21356067160020.590 ppb
2021-01-21356067160030.620 ppb
2021-01-21356067160040.850 ppb
2021-01-21356067160051.20 ppb
2021-01-21356067160060.810 ppb
2021-04-15356268250011.10 ppb
2021-04-15356268250020.730 ppb
2021-04-1535626825003ND
2021-04-15356268250040.910 ppb
2021-04-15356268250051.10 ppb
2021-04-15356268250060.910 ppb
2021-07-16356485450012.50 ppb
2021-07-16356485450021.30 ppb
2021-07-16356485450031.40 ppb
2021-07-16356485450041.80 ppb
2021-07-16356485450051.70 ppb
2021-07-16356485450062.00 ppb
2021-10-08356705580011.40 ppb
2021-10-08356705580020.650 ppb
2021-10-08356705580030.570 ppb
2021-10-08356705580040.960 ppb
2021-10-08356705580051.10 ppb
2021-10-08356705580060.980 ppb
2022-01-07356892170011.60 ppb
2022-01-07356892170021.30 ppb
2022-01-07356892170031.10 ppb
2022-01-07356892170041.20 ppb
2022-01-07356892170051.70 ppb
2022-01-07356892170061.20 ppb
2022-04-01357074910011.60 ppb
2022-04-01357074910021.000 ppb
2022-04-01357074910030.930 ppb
2022-04-01357074910041.40 ppb
2022-04-01357074910051.30 ppb
2022-04-01357074910061.50 ppb
2022-07-1435731989001ND
2022-07-1435731989002ND
2022-07-1435731989003ND
2022-07-1435731989004ND
2022-07-14357319890051.20 ppb
2022-07-14357319890061.80 ppb
2022-10-07357518630011.80 ppb
2022-10-07357518630021.000 ppb
2022-10-07357518630030.900 ppb
2022-10-07357518630041.40 ppb
2022-10-07357518630051.60 ppb
2022-10-07357518630061.40 ppb
2023-01-12357728070011.30 ppb
2023-01-12357728070020.580 ppb
2023-01-12357728070030.540 ppb
2023-01-12357728070041.10 ppb
2023-01-12357728070050.950 ppb
2023-01-12357728070061.20 ppb
2023-04-14357929000011.40 ppb
2023-04-1435792900002ND
2023-04-1435792900003ND
2023-04-1435792900004ND
2023-04-14357929000050.620 ppb
2023-04-1435792900006ND
2023-07-07358114360011.30 ppb
2023-07-0735811436002ND
2023-07-0735811436003ND
2023-07-07358114360041.000 ppb
2023-07-07358114360050.880 ppb
2023-07-07358114360060.900 ppb
2023-10-13358346660011.30 ppb
2023-10-13358346660020.760 ppb
2023-10-13358346660030.660 ppb
2023-10-13358346660040.950 ppb
2023-10-13358346660052.00 ppb
2023-10-13358346660060.890 ppb