Know Your Environment. Protect Your Health.

Dichloroacetic acid

CTWC - Shoreline Region-Guilford 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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.20 ppb16162.40 ppb - 17.0 ppb
20195.13 ppb16163.00 ppb - 8.50 ppb
20205.63 ppb16161.60 ppb - 10.7 ppb
20216.90 ppb16162.64 ppb - 13.1 ppb
20227.11 ppb16162.20 ppb - 11.0 ppb
20237.45 ppb16163.80 ppb - 16.0 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
2018-03-15CA03074HAA55.20 ppb
2018-03-15CA03075HAA56.80 ppb
2018-03-15CA03076HAA56.90 ppb
2018-03-15CA03073HAA56.00 ppb
2018-06-26CA80045HAA517.0 ppb
2018-06-26CA80046HAA512.0 ppb
2018-06-26CA80047HAA513.0 ppb
2018-06-26CA80048HAA514.0 ppb
2018-09-12DBP 2005050429.30 ppb
2018-09-12DBP 2005050432.60 ppb
2018-09-12DBP 2005050447.50 ppb
2018-09-12DBP 2005050472.40 ppb
2018-12-17DBP 2005162372.60 ppb
2018-12-17DBP 2005162393.60 ppb
2018-12-17DBP 2005162383.60 ppb
2018-12-17DBP 2005162352.70 ppb
2019-03-11DBP 2005241503.10 ppb
2019-03-11DBP 2005241513.80 ppb
2019-03-11DBP 2005241524.70 ppb
2019-03-11DBP 2005241545.00 ppb
2019-06-14DBP 2005366724.60 ppb
2019-06-14DBP 2005366745.50 ppb
2019-06-14DBP 2005366805.80 ppb
2019-06-14DBP 2005366826.50 ppb
2019-09-17DBP 2005494796.10 ppb
2019-09-17DBP 2005494813.50 ppb
2019-09-17DBP 2005494803.00 ppb
2019-09-17DBP 2005494786.30 ppb
2019-12-10DBP 2005596438.50 ppb
2019-12-10DBP 2005596444.60 ppb
2019-12-10DBP 2005596454.60 ppb
2019-12-10DBP 2005596426.50 ppb
2020-03-03DBP 2005679985.40 ppb
2020-03-05DBP 2005685743.80 ppb
2020-03-05DBP 2005685755.60 ppb
2020-03-05DBP 2005685766.40 ppb
2020-06-16DBP 2005795466.10 ppb
2020-06-16DBP 2005795475.80 ppb
2020-06-16DBP 2005795459.30 ppb
2020-06-16DBP 2005795438.20 ppb
2020-09-17DBP 2005910516.00 ppb
2020-09-17DBP 2005910525.40 ppb
2020-09-17DBP 2005910531.60 ppb
2020-09-17DBP 2005910542.20 ppb
2020-12-22DBP 2006020307.10 ppb
2020-12-22DBP 20060203110.7 ppb
2020-12-22DBP 2006020322.40 ppb
2020-12-22DBP 2006020334.00 ppb
2021-03-15DBP 2006098458.10 ppb
2021-03-15DBP 2006098425.90 ppb
2021-03-15DBP 2006098437.00 ppb
2021-03-15DBP 2006098448.20 ppb
2021-06-02DBP 2006192648.90 ppb
2021-06-02DBP 2006192656.90 ppb
2021-06-02DBP 2006192667.70 ppb
2021-06-02DBP 2006192638.80 ppb
2021-09-14300059734 30005973813.1 ppb
2021-09-14300059735 30005974012.2 ppb
2021-09-14300059736 3000597422.64 ppb
2021-09-14300059737 3000597442.94 ppb
2021-12-09D300117675 3001176823.30 ppb
2021-12-09D300117674 3001176803.70 ppb
2021-12-09D300117673 3001176785.80 ppb
2021-12-09D300117672 3001176765.30 ppb
2022-03-09CK835195.20 ppb
2022-03-09CK835205.40 ppb
2022-03-09CK835216.00 ppb
2022-03-25CK952308.40 ppb
2022-06-16CL588446.90 ppb
2022-06-16CL5884510.00 ppb
2022-06-16CL588469.30 ppb
2022-06-16CL5884710.00 ppb
2022-09-13CM307146.30 ppb
2022-09-13CM3069610.00 ppb
2022-09-13CM306952.20 ppb
2022-09-13CM306972.80 ppb
2022-12-01CM975879.40 ppb
2022-12-01CM975884.20 ppb
2022-12-01CM9758911.0 ppb
2022-12-01CM975906.60 ppb
2023-03-22CN664874.20 ppb
2023-03-22CN664885.90 ppb
2023-03-22CN664894.90 ppb
2023-03-22CN664906.00 ppb
2023-06-15CO319976.60 ppb
2023-06-15CO319996.30 ppb
2023-06-15CO3199812.0 ppb
2023-06-15CO319967.50 ppb
2023-09-05CO9068314.0 ppb
2023-09-05CO906844.60 ppb
2023-09-05CO9068516.0 ppb
2023-09-05CO906864.70 ppb
2023-12-07CP650787.50 ppb
2023-12-07CP650793.80 ppb
2023-12-07CP650808.60 ppb
2023-12-07CP650816.60 ppb