Dichloroacetic acid
Avon Water Company
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.0313 ppb | 16 | 1 | ND - 0.500 ppb |
| 2019 | 0.375 ppb | 16 | 8 | ND - 1.10 ppb |
| 2020 | 0.319 ppb | 16 | 6 | ND - 1.10 ppb |
| 2021 | 0.681 ppb | 17 | 14 | ND - 2.50 ppb |
| 2022 | 0.281 ppb | 16 | 3 | ND - 2.30 ppb |
| 2023 | 0.713 ppb | 16 | 7 | ND - 2.30 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 |
|---|---|---|
| 2018-01-24 | D8A1669-02HA5 | ND |
| 2018-01-24 | D8A1669-03HA5 | ND |
| 2018-01-24 | D8A1669-04HA5 | ND |
| 2018-01-24 | D8A1669-01HA5 | ND |
| 2018-04-25 | D8D2151-08HA5 | ND |
| 2018-04-25 | D8D2151-09HA5 | ND |
| 2018-04-25 | D8D2151-10HA5 | ND |
| 2018-04-25 | D8D2151-11HA5 | 0.500 ppb |
| 2018-07-26 | CA98743 | ND |
| 2018-07-26 | CA98744 | ND |
| 2018-07-26 | CA98745 | ND |
| 2018-07-26 | CA98746 | ND |
| 2018-10-09 | DBP 200508665 | ND |
| 2018-10-09 | DBP 200508678 | ND |
| 2018-10-09 | DBP 200508676 | ND |
| 2018-10-09 | DBP 200508664 | ND |
| 2019-01-08 | DBP 200518131 | ND |
| 2019-01-08 | DBP 200518132 | ND |
| 2019-01-08 | DBP 200518133 | ND |
| 2019-01-08 | DBP 200518135 | ND |
| 2019-04-11 | DBP 200528267 | ND |
| 2019-04-11 | DBP 200528268 | 0.800 ppb |
| 2019-04-11 | DBP 200528269 | ND |
| 2019-04-11 | DBP 200528270 | 0.600 ppb |
| 2019-07-02 | DBP 200538993 | 1.10 ppb |
| 2019-07-02 | DBP 200538996 | 1.000 ppb |
| 2019-07-02 | DBP 200538995 | 0.600 ppb |
| 2019-07-02 | DBP 200538992 | ND |
| 2019-10-03 | DBP 200551430 | 0.600 ppb |
| 2019-10-03 | DBP 200551431 | 0.600 ppb |
| 2019-10-03 | DBP 200551432 | 0.700 ppb |
| 2019-10-03 | DBP 200551429 | ND |
| 2020-01-09 | DBP 200562755 | ND |
| 2020-01-09 | DBP 200562756 | ND |
| 2020-01-09 | DBP 200562757 | ND |
| 2020-01-09 | DBP 200562758 | ND |
| 2020-04-16 | DBP 200572928 | 0.600 ppb |
| 2020-04-16 | DBP 200572929 | 0.900 ppb |
| 2020-04-16 | DBP 200572927 | 0.600 ppb |
| 2020-04-16 | DBP 200572926 | ND |
| 2020-07-20 | DBP 200583413 | ND |
| 2020-07-20 | DBP 200583414 | 1.000 ppb |
| 2020-07-20 | DBP 200583415 | ND |
| 2020-07-20 | DBP 200583416 | 0.900 ppb |
| 2020-10-21 | DBP 200595044 | ND |
| 2020-10-21 | DBP 200595045 | 1.10 ppb |
| 2020-10-21 | DBP 200595046 | ND |
| 2020-10-21 | DBP 200595047 | ND |
| 2021-01-07 | DBP 200603406 | 0.600 ppb |
| 2021-01-07 | DBP 200603402 | 0.600 ppb |
| 2021-01-07 | DBP 200603404 | 0.600 ppb |
| 2021-01-07 | DBP 200603405 | 0.600 ppb |
| 2021-01-08 | DBP 200603409 | 2.50 ppb |
| 2021-04-15 | DBP 200613652 | ND |
| 2021-04-15 | DBP 200613653 | 0.700 ppb |
| 2021-04-15 | DBP 200613654 | 0.700 ppb |
| 2021-04-15 | DBP 200613655 | 0.700 ppb |
| 2021-07-01 | DBP 200623334 | ND |
| 2021-07-01 | DBP 200623335 | 0.500 ppb |
| 2021-07-01 | DBP 200623336 | 0.900 ppb |
| 2021-07-01 | DBP 200623338 | 0.900 ppb |
| 2021-10-12 | H300079407 300079433 | 0.780 ppb |
| 2021-10-12 | H300079409 300079435 | ND |
| 2021-10-12 | H300079408 300079434 | 0.730 ppb |
| 2021-10-12 | H300079406 300079432 | 0.770 ppb |
| 2022-01-14 | CK17779 | ND |
| 2022-01-14 | CK17780 | ND |
| 2022-01-14 | CK17781 | ND |
| 2022-01-18 | CK17774 | ND |
| 2022-04-15 | CL11166 | ND |
| 2022-04-15 | CL11167 | ND |
| 2022-04-15 | CL11168 | ND |
| 2022-04-15 | CL11169 | ND |
| 2022-07-08 | CL75309 | ND |
| 2022-07-08 | CL75312 | 1.10 ppb |
| 2022-07-08 | CL75310 | 2.30 ppb |
| 2022-07-08 | CL75311 | 1.10 ppb |
| 2022-10-21 | CM69248 | ND |
| 2022-10-21 | CM69249 | ND |
| 2022-10-21 | CM69250 | ND |
| 2022-10-21 | CM69251 | ND |
| 2023-01-11 | CN21964 | ND |
| 2023-01-12 | CN24188 | 1.20 ppb |
| 2023-01-12 | CN24189 | 1.50 ppb |
| 2023-01-12 | CN24190 | 1.20 ppb |
| 2023-04-14 | CN85863 | ND |
| 2023-04-14 | CN85865 | ND |
| 2023-04-14 | CN85864 | ND |
| 2023-04-14 | CN85862 | ND |
| 2023-07-13 | CO53041 | ND |
| 2023-07-13 | CO53042 | ND |
| 2023-07-13 | CO53043 | 1.60 ppb |
| 2023-07-25 | CO58855 | 2.30 ppb |
| 2023-10-04 | CP17807 | ND |
| 2023-10-04 | CP17808 | 2.00 ppb |
| 2023-10-04 | CP17809 | 1.60 ppb |
| 2023-10-04 | CP17810 | ND |