Dichloroacetic acid
Beauregard Water Works District #3
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 | 2.59 ppb | 48 | 48 | 0.720 ppb - 8.60 ppb |
| 2019 | 3.71 ppb | 48 | 48 | 0.420 ppb - 8.60 ppb |
| 2020 | 2.73 ppb | 24 | 24 | 0.620 ppb - 5.80 ppb |
| 2021 | 2.62 ppb | 24 | 24 | 0.570 ppb - 5.20 ppb |
| 2022 | 2.80 ppb | 24 | 24 | 0.400 ppb - 6.20 ppb |
| 2023 | 2.13 ppb | 24 | 19 | ND - 4.80 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 |
|---|---|---|
| 2018-03-07 | 35379177001 | 0.880 ppb |
| 2018-03-07 | 35379177002 | 4.00 ppb |
| 2018-03-07 | 35379177003 | 0.720 ppb |
| 2018-03-07 | 35379177004 | 1.40 ppb |
| 2018-03-07 | 35379177005 | 2.60 ppb |
| 2018-03-07 | 35379177006 | 2.30 ppb |
| 2018-03-07 | 35379177001 | 0.880 ppb |
| 2018-03-07 | 35379177002 | 4.00 ppb |
| 2018-03-07 | 35379177003 | 0.720 ppb |
| 2018-03-07 | 35379177004 | 1.40 ppb |
| 2018-03-07 | 35379177005 | 2.60 ppb |
| 2018-03-07 | 35379177006 | 2.30 ppb |
| 2018-06-13 | 35398741001 | 1.20 ppb |
| 2018-06-13 | 35398741002 | 4.30 ppb |
| 2018-06-13 | 35398741003 | 1.30 ppb |
| 2018-06-13 | 35398741004 | 2.20 ppb |
| 2018-06-13 | 35398741005 | 1.40 ppb |
| 2018-06-13 | 35398741006 | 3.20 ppb |
| 2018-06-13 | 35398741001 | 1.20 ppb |
| 2018-06-13 | 35398741002 | 4.30 ppb |
| 2018-06-13 | 35398741003 | 1.30 ppb |
| 2018-06-13 | 35398741004 | 2.20 ppb |
| 2018-06-13 | 35398741005 | 1.40 ppb |
| 2018-06-13 | 35398741006 | 3.20 ppb |
| 2018-09-04 | 35416221001 | 1.10 ppb |
| 2018-09-04 | 35416221002 | 1.30 ppb |
| 2018-09-04 | 35416221003 | 8.60 ppb |
| 2018-09-04 | 35416226001 | 3.80 ppb |
| 2018-09-04 | 35416226002 | 2.20 ppb |
| 2018-09-04 | 35416226003 | 3.40 ppb |
| 2018-09-04 | 35416221001 | 1.10 ppb |
| 2018-09-04 | 35416221002 | 1.30 ppb |
| 2018-09-04 | 35416221003 | 8.60 ppb |
| 2018-09-04 | 35416226001 | 3.80 ppb |
| 2018-09-04 | 35416226002 | 2.20 ppb |
| 2018-09-04 | 35416226003 | 3.40 ppb |
| 2018-12-12 | 35437374001 | 5.90 ppb |
| 2018-12-12 | 35437374002 | 3.40 ppb |
| 2018-12-12 | 35437374003 | 0.980 ppb |
| 2018-12-12 | 35437374004 | 2.00 ppb |
| 2018-12-12 | 35437374005 | 3.00 ppb |
| 2018-12-12 | 35437374006 | 0.920 ppb |
| 2018-12-12 | 35437374001 | 5.90 ppb |
| 2018-12-12 | 35437374002 | 3.40 ppb |
| 2018-12-12 | 35437374003 | 0.980 ppb |
| 2018-12-12 | 35437374004 | 2.00 ppb |
| 2018-12-12 | 35437374005 | 3.00 ppb |
| 2018-12-12 | 35437374006 | 0.920 ppb |
| 2019-03-11 | 35454715001 | 5.00 ppb |
| 2019-03-11 | 35454715002 | 2.60 ppb |
| 2019-03-11 | 35454716001 | 7.50 ppb |
| 2019-03-11 | 35454716002 | 1.20 ppb |
| 2019-03-11 | 35454716003 | 1.20 ppb |
| 2019-03-11 | 35454715001 | 5.00 ppb |
| 2019-03-11 | 35454715002 | 2.60 ppb |
| 2019-03-11 | 35454716001 | 7.50 ppb |
| 2019-03-11 | 35454716002 | 1.20 ppb |
| 2019-03-11 | 35454716003 | 1.20 ppb |
| 2019-03-14 | 35454715003 | 3.90 ppb |
| 2019-03-14 | 35454715003 | 3.90 ppb |
| 2019-06-03 | 35474282001 | 5.00 ppb |
| 2019-06-03 | 35474282002 | 3.10 ppb |
| 2019-06-03 | 35474282003 | 2.00 ppb |
| 2019-06-03 | 35474284001 | 5.60 ppb |
| 2019-06-03 | 35474284002 | 4.70 ppb |
| 2019-06-03 | 35474284003 | 2.50 ppb |
| 2019-06-03 | 35474282001 | 5.00 ppb |
| 2019-06-03 | 35474282002 | 3.10 ppb |
| 2019-06-03 | 35474282003 | 2.00 ppb |
| 2019-06-03 | 35474284001 | 5.60 ppb |
| 2019-06-03 | 35474284002 | 4.70 ppb |
| 2019-06-03 | 35474284003 | 2.50 ppb |
| 2019-09-03 | 35495824001 | 4.40 ppb |
| 2019-09-03 | 35495831001 | 5.00 ppb |
| 2019-09-03 | 35495831002 | 1.60 ppb |
| 2019-09-03 | 35495831003 | 0.420 ppb |
| 2019-09-03 | 35495824001 | 4.40 ppb |
| 2019-09-03 | 35495831001 | 5.00 ppb |
| 2019-09-03 | 35495831002 | 1.60 ppb |
| 2019-09-03 | 35495831003 | 0.420 ppb |
| 2019-09-26 | 35501131001 | 8.60 ppb |
| 2019-09-26 | 35501131002 | 8.30 ppb |
| 2019-09-26 | 35501131001 | 8.60 ppb |
| 2019-09-26 | 35501131002 | 8.30 ppb |
| 2019-12-02 | 35516981001 | 5.40 ppb |
| 2019-12-02 | 35516981002 | 1.80 ppb |
| 2019-12-02 | 35516981003 | 3.10 ppb |
| 2019-12-02 | 35516986001 | 4.30 ppb |
| 2019-12-02 | 35516986002 | 0.810 ppb |
| 2019-12-02 | 35516986003 | 0.920 ppb |
| 2019-12-02 | 35516981001 | 5.40 ppb |
| 2019-12-02 | 35516981002 | 1.80 ppb |
| 2019-12-02 | 35516981003 | 3.10 ppb |
| 2019-12-02 | 35516986001 | 4.30 ppb |
| 2019-12-02 | 35516986002 | 0.810 ppb |
| 2019-12-02 | 35516986003 | 0.920 ppb |
| 2020-03-12 | 35537457001 | 5.10 ppb |
| 2020-03-12 | 35537457002 | 4.10 ppb |
| 2020-03-12 | 35537457003 | 1.10 ppb |
| 2020-03-12 | 35537457004 | 2.20 ppb |
| 2020-03-12 | 35537457005 | 3.20 ppb |
| 2020-03-12 | 35537457006 | 0.880 ppb |
| 2020-06-04 | 35554631001 | 4.40 ppb |
| 2020-06-04 | 35554631002 | 5.80 ppb |
| 2020-06-04 | 35554631003 | 1.40 ppb |
| 2020-06-04 | 35554631004 | 1.60 ppb |
| 2020-06-04 | 35554631005 | 3.00 ppb |
| 2020-06-04 | 35554631006 | 0.620 ppb |
| 2020-09-25 | 35580612001 | 4.60 ppb |
| 2020-09-25 | 35580612002 | 3.90 ppb |
| 2020-09-25 | 35580612003 | 1.000 ppb |
| 2020-09-25 | 35580612004 | 2.10 ppb |
| 2020-09-25 | 35580612005 | 2.60 ppb |
| 2020-09-25 | 35580612006 | 1.10 ppb |
| 2020-12-04 | 35596660001 | 5.10 ppb |
| 2020-12-04 | 35596660002 | 4.60 ppb |
| 2020-12-04 | 35596660003 | 0.950 ppb |
| 2020-12-04 | 35596660004 | 2.10 ppb |
| 2020-12-04 | 35596660005 | 3.20 ppb |
| 2020-12-04 | 35596660006 | 0.930 ppb |
| 2021-03-29 | 35622529001 | 4.20 ppb |
| 2021-03-29 | 35622529002 | 4.20 ppb |
| 2021-03-29 | 35622529003 | 1.30 ppb |
| 2021-03-29 | 35622529004 | 1.80 ppb |
| 2021-03-29 | 35622529005 | 2.50 ppb |
| 2021-03-29 | 35622529006 | 0.890 ppb |
| 2021-06-23 | 35643508001 | 4.40 ppb |
| 2021-06-23 | 35643508002 | 4.80 ppb |
| 2021-06-23 | 35643508003 | 1.10 ppb |
| 2021-06-23 | 35643508004 | 2.00 ppb |
| 2021-06-23 | 35643508005 | 2.80 ppb |
| 2021-06-23 | 35643508006 | 1.000 ppb |
| 2021-09-09 | 35663633001 | 4.50 ppb |
| 2021-09-09 | 35663633002 | 3.60 ppb |
| 2021-09-09 | 35663633003 | 1.50 ppb |
| 2021-09-09 | 35663633004 | 1.80 ppb |
| 2021-09-09 | 35663633005 | 2.90 ppb |
| 2021-09-09 | 35663633006 | 1.10 ppb |
| 2021-12-17 | 35685396001 | 5.20 ppb |
| 2021-12-17 | 35685396002 | 3.70 ppb |
| 2021-12-17 | 35685396003 | 0.680 ppb |
| 2021-12-17 | 35685396004 | 1.80 ppb |
| 2021-12-17 | 35685396005 | 4.50 ppb |
| 2021-12-17 | 35685396006 | 0.570 ppb |
| 2022-03-17 | 35704944001 | 4.70 ppb |
| 2022-03-17 | 35704944002 | 3.10 ppb |
| 2022-03-17 | 35704944003 | 1.10 ppb |
| 2022-03-17 | 35704944004 | 2.00 ppb |
| 2022-03-17 | 35704944005 | 3.00 ppb |
| 2022-03-17 | 35704944006 | 0.830 ppb |
| 2022-06-02 | 35722448001 | 4.90 ppb |
| 2022-06-02 | 35722448002 | 4.60 ppb |
| 2022-06-02 | 35722448003 | 0.670 ppb |
| 2022-06-02 | 35722448004 | 1.70 ppb |
| 2022-06-02 | 35722448005 | 2.80 ppb |
| 2022-06-02 | 35722448006 | 0.600 ppb |
| 2022-09-09 | 35745863001 | 5.10 ppb |
| 2022-09-09 | 35745863002 | 4.40 ppb |
| 2022-09-09 | 35745863003 | 2.30 ppb |
| 2022-09-09 | 35745863004 | 2.10 ppb |
| 2022-09-09 | 35745863005 | 3.80 ppb |
| 2022-09-09 | 35745863006 | 0.920 ppb |
| 2022-12-09 | 35765897001 | 1.90 ppb |
| 2022-12-09 | 35765897002 | 6.20 ppb |
| 2022-12-09 | 35765897003 | 4.10 ppb |
| 2022-12-09 | 35765897004 | 5.50 ppb |
| 2022-12-09 | 35765897005 | 0.400 ppb |
| 2022-12-09 | 35765897006 | 0.560 ppb |
| 2023-03-17 | 35786901001 | 4.80 ppb |
| 2023-03-17 | 35786901002 | ND |
| 2023-03-17 | 35786901003 | ND |
| 2023-03-17 | 35786901004 | 3.10 ppb |
| 2023-03-17 | 35786901005 | ND |
| 2023-03-17 | 35786901006 | 0.890 ppb |
| 2023-06-28 | 35809733001 | 3.60 ppb |
| 2023-06-28 | 35809733002 | 3.80 ppb |
| 2023-06-28 | 35809733003 | ND |
| 2023-06-28 | 35809733004 | 2.00 ppb |
| 2023-06-28 | 35809733005 | 3.60 ppb |
| 2023-06-28 | 35809733006 | 0.600 ppb |
| 2023-09-12 | 35827904001 | 3.70 ppb |
| 2023-09-12 | 35827904002 | 4.20 ppb |
| 2023-09-12 | 35827904003 | 0.820 ppb |
| 2023-09-12 | 35827904004 | 2.00 ppb |
| 2023-09-12 | 35827904005 | 3.90 ppb |
| 2023-09-12 | 35827904006 | ND |
| 2023-12-05 | 35846836001 | 1.40 ppb |
| 2023-12-05 | 35846836002 | 4.20 ppb |
| 2023-12-05 | 35846836003 | 3.60 ppb |
| 2023-12-05 | 35846836004 | 4.20 ppb |
| 2023-12-05 | 35846836005 | 0.360 ppb |
| 2023-12-05 | 35846836006 | 0.280 ppb |