Know Your Environment. Protect Your Health.

Dichloroacetic acid

City of Gonzales 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.

 

128

Samples

0

Samples exceeding legal limit (MCL)

105

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.05 ppb3226ND - 22.3 ppb
20191.42 ppb3230ND - 5.30 ppb
20200.649 ppb1612ND - 0.970 ppb
20210.576 ppb1611ND - 1.20 ppb
20221.05 ppb16160.660 ppb - 2.00 ppb
20230.458 ppb1610ND - 1.40 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
2018-02-0235371907001ND
2018-02-0235371907002ND
2018-02-02353719070031.30 ppb
2018-02-0235371907004ND
2018-02-0235371907001ND
2018-02-0235371907002ND
2018-02-02353719070031.30 ppb
2018-02-0235371907004ND
2018-05-18353932310011.50 ppb
2018-05-18353932310021.50 ppb
2018-05-18353932310032.10 ppb
2018-05-183539323100422.3 ppb
2018-05-18353932310011.50 ppb
2018-05-18353932310021.50 ppb
2018-05-18353932310032.10 ppb
2018-05-183539323100422.3 ppb
2018-08-03354086630013.80 ppb
2018-08-03354086630024.00 ppb
2018-08-03354086630033.80 ppb
2018-08-03354086630043.50 ppb
2018-08-03354086630013.80 ppb
2018-08-03354086630024.00 ppb
2018-08-03354086630033.80 ppb
2018-08-03354086630043.50 ppb
2018-11-01354282040010.910 ppb
2018-11-01354282040021.40 ppb
2018-11-01354282040031.30 ppb
2018-11-01354282040041.40 ppb
2018-11-01354282040010.910 ppb
2018-11-01354282040021.40 ppb
2018-11-01354282040031.30 ppb
2018-11-01354282040041.40 ppb
2019-02-07354471240011.50 ppb
2019-02-07354471240021.30 ppb
2019-02-07354471240031.60 ppb
2019-02-07354471240041.70 ppb
2019-02-07354471240011.50 ppb
2019-02-07354471240021.30 ppb
2019-02-07354471240031.60 ppb
2019-02-07354471240041.70 ppb
2019-05-0835468287001ND
2019-05-08354682870022.40 ppb
2019-05-08354682870035.30 ppb
2019-05-08354682870041.10 ppb
2019-05-0835468287001ND
2019-05-08354682870022.40 ppb
2019-05-08354682870035.30 ppb
2019-05-08354682870041.10 ppb
2019-08-06354887330010.960 ppb
2019-08-06354887330021.30 ppb
2019-08-06354887330031.20 ppb
2019-08-06354887330040.800 ppb
2019-08-06354887330010.960 ppb
2019-08-06354887330021.30 ppb
2019-08-06354887330031.20 ppb
2019-08-06354887330040.800 ppb
2019-11-06355111000010.820 ppb
2019-11-06355111000020.950 ppb
2019-11-06355111000030.880 ppb
2019-11-06355111000040.910 ppb
2019-11-06355111000010.820 ppb
2019-11-06355111000020.950 ppb
2019-11-06355111000030.880 ppb
2019-11-06355111000040.910 ppb
2020-02-04355293520010.890 ppb
2020-02-04355293520020.930 ppb
2020-02-04355293520030.930 ppb
2020-02-04355293520040.950 ppb
2020-05-1235550484001ND
2020-05-1235550484002ND
2020-05-1235550484003ND
2020-05-1235550484004ND
2020-08-04355692380010.800 ppb
2020-08-04355692380020.880 ppb
2020-08-04355692380030.740 ppb
2020-08-04355692380040.710 ppb
2020-11-04355905220010.780 ppb
2020-11-04355905220020.870 ppb
2020-11-04355905220030.970 ppb
2020-11-04355905220040.930 ppb
2021-02-0135610064001ND
2021-02-01356100640020.470 ppb
2021-02-01356100640030.500 ppb
2021-02-01356100640040.510 ppb
2021-05-03356316880010.940 ppb
2021-05-03356316880021.000 ppb
2021-05-03356316880031.20 ppb
2021-05-03356316880041.000 ppb
2021-08-0535653948001ND
2021-08-0535653948002ND
2021-08-0535653948003ND
2021-08-0535653948004ND
2021-11-03356764170010.660 ppb
2021-11-03356764170020.830 ppb
2021-11-03356764170031.10 ppb
2021-11-03356764170041.000 ppb
2022-02-17356983730011.10 ppb
2022-02-17356983730021.30 ppb
2022-02-17356983730030.910 ppb
2022-02-17356983730040.660 ppb
2022-05-09357174130011.30 ppb
2022-05-09357174130021.20 ppb
2022-05-09357174130031.20 ppb
2022-05-09357174130041.20 ppb
2022-08-10357390700010.930 ppb
2022-08-10357390700020.820 ppb
2022-08-10357390700030.930 ppb
2022-08-10357390700040.760 ppb
2022-11-03357577160012.00 ppb
2022-11-03357577160020.780 ppb
2022-11-03357577160030.930 ppb
2022-11-03357577160040.780 ppb
2023-02-02357767370010.270 ppb
2023-02-02357767370020.540 ppb
2023-02-02357767370030.710 ppb
2023-02-02357767370040.610 ppb
2023-05-0435797439001ND
2023-05-04357974390020.670 ppb
2023-05-04357974390030.630 ppb
2023-05-04357974390040.650 ppb
2023-08-0235817723001ND
2023-08-02358177230021.40 ppb
2023-08-02358177230031.10 ppb
2023-08-02358177230040.750 ppb
2023-11-0735840526001ND
2023-11-0735840526002ND
2023-11-0735840526003ND
2023-11-0735840526004ND