Dichloroacetic acid
Dunkirk City and Area
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 2.22 ppb | 10 | 7 | ND - 6.10 ppb |
| 2015 | 2.38 ppb | 16 | 15 | ND - 6.61 ppb |
| 2016 | 2.20 ppb | 16 | 15 | ND - 5.10 ppb |
| 2017 | 3.83 ppb | 16 | 16 | 1.40 ppb - 9.20 ppb |
| 2018 | 3.38 ppb | 17 | 17 | 1.40 ppb - 8.30 ppb |
| 2019 | 2.72 ppb | 16 | 13 | ND - 6.40 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.2 ppb
The EWG Health Guideline of 0.2 ppb for dichloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-05-01 | MAY14 DUNKIRK SA | 6.10 ppb |
| 2014-05-01 | MAY14 DUNKIRK SA | 4.60 ppb |
| 2014-08-21 | AUG 2014 ST COLU | ND |
| 2014-08-21 | AUG 2014 LAFAYET | ND |
| 2014-08-21 | AUG 2014 HOYT | 3.25 ppb |
| 2014-08-21 | AUG 2014 DON FRA | 2.97 ppb |
| 2014-11-05 | NOV14 ST. COLUMB | ND |
| 2014-11-05 | NOV14 DON FRAME | 1.35 ppb |
| 2014-11-06 | NOV14 344 HOYT | 2.81 ppb |
| 2014-11-06 | NOV14 17 LAFAYET | 1.14 ppb |
| 2015-02-04 | FEB15 4737 WILLO | 1.50 ppb |
| 2015-02-04 | FEB15 LAFAYETTE | 2.41 ppb |
| 2015-02-04 | FEB15 344 HOYT | 5.07 ppb |
| 2015-02-04 | FEB15 ST. COLUMB | 6.61 ppb |
| 2015-05-14 | MAY15 WILLOW ROA | ND |
| 2015-05-14 | MAY15 LAFAYETTE | 1.15 ppb |
| 2015-05-14 | MAY15 ST. COLUMB | 5.60 ppb |
| 2015-05-14 | MAY15 HOYT ST | 3.98 ppb |
| 2015-08-06 | AUG15 ST. COLUMB | 2.80 ppb |
| 2015-08-06 | AUG15 4737 WILLO | 1.80 ppb |
| 2015-08-06 | AUG15 344 HOYT | 0.740 ppb |
| 2015-08-06 | AUG15 17 LAFAYET | 1.60 ppb |
| 2015-11-19 | NOV15 ST COLUMBA | 1.20 ppb |
| 2015-11-19 | NOV15 HOYT ST | 2.00 ppb |
| 2015-11-19 | NOV15 4737WILLOW | 0.920 ppb |
| 2015-11-19 | NOV15 LAFAYETTE | 0.680 ppb |
| 2016-02-23 | FEB16 334 HOYT | 5.10 ppb |
| 2016-02-23 | FEB16 JN ADAM | 2.80 ppb |
| 2016-02-23 | FEB16 17 LAFAYET | 1.20 ppb |
| 2016-02-23 | FEB16 ST. COLUMB | 4.10 ppb |
| 2016-05-10 | 2NDQT16 344 HOYT | 4.40 ppb |
| 2016-05-10 | 2NDQT16 JN ADAM | 1.80 ppb |
| 2016-05-10 | 2NDQT16 ST COLUM | 2.20 ppb |
| 2016-05-10 | 2NDQT16 17 LAFAY | 3.00 ppb |
| 2016-08-10 | AUG16 ST COLUMBA | 1.20 ppb |
| 2016-08-10 | AUG16 HOYT, DUNK | 2.00 ppb |
| 2016-08-10 | AUG16 JN ADAM DU | 1.70 ppb |
| 2016-08-10 | AUG16 LAFAYETTE | 1.80 ppb |
| 2016-11-02 | NOV16 ST COLUMBA | 1.10 ppb |
| 2016-11-02 | NOV16 344 HOYT | 1.10 ppb |
| 2016-11-02 | NOV16 17 LAFAYET | 1.70 ppb |
| 2016-11-02 | NOV16 JN ADAM | ND |
| 2017-02-08 | FEB17 17 LAFYETT | 5.50 ppb |
| 2017-02-08 | FEB17 ST. COLUMB | 6.60 ppb |
| 2017-02-08 | FEB17 344 HOYT | 2.70 ppb |
| 2017-02-08 | FEB17 JN ADAMS H | 3.10 ppb |
| 2017-05-03 | MAY17 LAFAYETTE | 9.20 ppb |
| 2017-05-03 | MAY17 344 HOYT | 2.80 ppb |
| 2017-05-03 | MAY17 ST COLULMB | 6.60 ppb |
| 2017-05-03 | MAY17 JN ADAMS | 4.60 ppb |
| 2017-08-09 | AUG17 LAFAYETTE | 2.70 ppb |
| 2017-08-09 | AUG17 ST. COLUMB | 1.40 ppb |
| 2017-08-09 | AUG17 JN ADAMS | 4.90 ppb |
| 2017-08-09 | AUG17 HOYT | 3.00 ppb |
| 2017-11-08 | NOV17 17 LAFEYET | 2.30 ppb |
| 2017-11-08 | NOV17 ST. COLUMB | 1.70 ppb |
| 2017-11-08 | NOV17 344 HOYT | 2.20 ppb |
| 2017-11-08 | NOV17 JN ADAM 20 | 2.00 ppb |
| 2018-02-13 | Q1DUNKIRK 2018 J | 3.70 ppb |
| 2018-02-13 | Q1DUNKIRK 2018 C | 4.40 ppb |
| 2018-02-13 | Q1DUNKIRK 2018 L | 6.60 ppb |
| 2018-02-13 | Q1DUNKIRK 2018 H | 2.40 ppb |
| 2018-05-08 | Q219 SENIOR CTR | 4.60 ppb |
| 2018-05-09 | Q2DUNKIRK 18 ADA | 2.90 ppb |
| 2018-05-09 | Q2DUNKIRK 18 LAF | 8.30 ppb |
| 2018-05-09 | Q2DUNKIRK 18 HOY | 2.50 ppb |
| 2018-05-09 | Q2DUNKIRK 18 COL | 4.60 ppb |
| 2018-08-15 | Q3DUNKIRK 18 ADA | 2.00 ppb |
| 2018-08-15 | Q3DUNKIRK 18 ST | 1.40 ppb |
| 2018-08-15 | Q3DUNKIRK 18 HOY | 2.50 ppb |
| 2018-08-15 | Q3DUNKIRK 18 LAF | 2.20 ppb |
| 2018-11-20 | Q4 18 FISHERIES | 1.50 ppb |
| 2018-11-20 | Q4 18 SENIOR CTR | 2.20 ppb |
| 2018-11-20 | Q4 18 HOYT DBPS | 2.40 ppb |
| 2018-11-20 | Q4 18 LAFAYETTE | 3.20 ppb |
| 2019-02-13 | Q1 19 344 HOYT D | 4.00 ppb |
| 2019-02-13 | Q1 19 FISHERIES | 1.60 ppb |
| 2019-02-13 | Q1 19 SENIOR CTR | 3.60 ppb |
| 2019-02-13 | Q1 19 LAFAYETTE | 5.40 ppb |
| 2019-05-08 | Q2 19 LAFAYETTE | 6.40 ppb |
| 2019-05-08 | Q2 19 344 HOYT D | ND |
| 2019-05-08 | Q2 19 SENIOR CTR | 4.60 ppb |
| 2019-05-08 | Q2 19 FISHERIES | 1.000 ppb |
| 2019-08-28 | Q3 19 344 HOYT D | ND |
| 2019-08-28 | Q3 19 FISHERIES | ND |
| 2019-08-28 | Q3 19 LAFAYETTE | 2.70 ppb |
| 2019-08-28 | Q3 19 SENIOR CTR | 4.50 ppb |
| 2019-11-13 | Q4 19 SENIOR CTR | 3.40 ppb |
| 2019-11-13 | Q4 19 LAFAYETTE | 2.70 ppb |
| 2019-11-13 | Q4 19 FISHERIES | 1.40 ppb |
| 2019-11-13 | Q4 19 344 HOYT D | 2.20 ppb |