Dichloroacetic acid
Gallup 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.
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 | 0.525 ppb | 16 | 16 | 0.310 ppb - 0.760 ppb |
| 2015 | 0.587 ppb | 16 | 16 | 0.200 ppb - 1.20 ppb |
| 2016 | 0.363 ppb | 16 | 6 | ND - 1.40 ppb |
| 2017 | 0.323 ppb | 16 | 5 | ND - 1.30 ppb |
| 2018 | 0.675 ppb | 16 | 14 | ND - 1.20 ppb |
| 2019 | 0.778 ppb | 16 | 15 | ND - 1.40 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 |
|---|---|---|
| 2014-01-24 | 2014002446 | 0.650 ppb |
| 2014-01-24 | 2014002444 | 0.500 ppb |
| 2014-01-24 | 2014002445 | 0.390 ppb |
| 2014-01-24 | 2014002443 | 0.760 ppb |
| 2014-04-16 | 2014012563 | 0.720 ppb |
| 2014-04-16 | 2014012562 | 0.480 ppb |
| 2014-04-16 | 2014012561 | 0.360 ppb |
| 2014-04-16 | 2014012564 | 0.340 ppb |
| 2014-07-01 | 2014020830 | 0.760 ppb |
| 2014-07-01 | 2014020831 | 0.590 ppb |
| 2014-07-01 | 2014020832 | 0.470 ppb |
| 2014-07-01 | 2014020833 | 0.340 ppb |
| 2014-11-19 | 2014035740 | 0.540 ppb |
| 2014-11-19 | 2014035739 | 0.310 ppb |
| 2014-11-19 | 2014035737 | 0.530 ppb |
| 2014-11-19 | 2014035738 | 0.660 ppb |
| 2015-02-04 | 2015003904 | 0.700 ppb |
| 2015-02-04 | 2015003903 | 0.550 ppb |
| 2015-02-04 | 2015003901 | 0.450 ppb |
| 2015-02-04 | 2015003902 | 0.370 ppb |
| 2015-04-08 | 2015010918 | 0.490 ppb |
| 2015-04-08 | 2015010917 | 0.420 ppb |
| 2015-04-08 | 2015010916 | 0.340 ppb |
| 2015-04-08 | 2015010915 | 0.200 ppb |
| 2015-08-18 | 2015023951 | 0.530 ppb |
| 2015-08-18 | 2015023950 | 0.400 ppb |
| 2015-08-18 | 2015023952 | 0.510 ppb |
| 2015-08-18 | 2015023949 | 0.750 ppb |
| 2015-11-30 | 2015035105 | 1.000 ppb |
| 2015-11-30 | 2015035102 | 0.780 ppb |
| 2015-11-30 | 2015035104 | 0.700 ppb |
| 2015-11-30 | 2015035103 | 1.20 ppb |
| 2016-02-24 | 2016005291 | ND |
| 2016-02-24 | 2016005290 | ND |
| 2016-02-24 | 2016005288 | ND |
| 2016-02-24 | 2016005289 | ND |
| 2016-04-12 | 2016010327 | ND |
| 2016-04-12 | 2016010325 | ND |
| 2016-04-12 | 2016010326 | ND |
| 2016-04-12 | 2016010324 | ND |
| 2016-07-19 | 2016020564 | 1.10 ppb |
| 2016-07-19 | 2016020566 | 0.690 ppb |
| 2016-07-19 | 2016020565 | 0.680 ppb |
| 2016-07-19 | 2016020563 | ND |
| 2016-10-25 | 2016031001 | 1.40 ppb |
| 2016-10-25 | 2016030998 | 0.980 ppb |
| 2016-10-25 | 2016030999 | 0.960 ppb |
| 2016-10-25 | 2016031000 | ND |
| 2017-01-10 | 2017000730 | ND |
| 2017-01-10 | 2017000732 | ND |
| 2017-01-10 | 2017000731 | ND |
| 2017-01-10 | 2017000729 | ND |
| 2017-04-04 | 2017009635 | 0.950 ppb |
| 2017-04-04 | 2017009637 | 0.850 ppb |
| 2017-04-04 | 2017009636 | ND |
| 2017-04-04 | 2017009638 | ND |
| 2017-07-05 | 2017019171 | ND |
| 2017-07-05 | 2017019172 | ND |
| 2017-07-05 | 2017019174 | 0.860 ppb |
| 2017-07-05 | 2017019173 | 1.20 ppb |
| 2017-10-11 | 2017029274 | 1.30 ppb |
| 2017-10-11 | 2017029277 | ND |
| 2017-10-11 | 2017029276 | ND |
| 2017-10-11 | 2017029275 | ND |
| 2018-01-10 | 2018000973 | ND |
| 2018-01-10 | 2018000972 | 1.20 ppb |
| 2018-01-10 | 2018000971 | ND |
| 2018-01-10 | 2018000970 | 0.760 ppb |
| 2018-04-11 | 2018010264 | 0.630 ppb |
| 2018-04-11 | 2018010261 | 0.500 ppb |
| 2018-04-11 | 2018010262 | 1.10 ppb |
| 2018-04-11 | 2018010263 | 0.710 ppb |
| 2018-07-10 | 2018018728 | 0.550 ppb |
| 2018-07-10 | 2018018727 | 0.580 ppb |
| 2018-07-10 | 2018018726 | 0.850 ppb |
| 2018-07-10 | 2018018725 | 0.550 ppb |
| 2018-10-04 | 2018028465 | 0.750 ppb |
| 2018-10-04 | 2018028466 | 0.660 ppb |
| 2018-10-04 | 2018028467 | 0.760 ppb |
| 2018-10-04 | 2018028468 | 1.20 ppb |
| 2019-01-10 | 2019000748 | ND |
| 2019-01-10 | 2019000749 | 1.20 ppb |
| 2019-01-10 | 2019000750 | 0.870 ppb |
| 2019-01-10 | 2019000751 | 0.970 ppb |
| 2019-04-09 | 2019008900 | 0.790 ppb |
| 2019-04-09 | 2019008903 | 0.510 ppb |
| 2019-04-09 | 2019008902 | 1.000 ppb |
| 2019-04-09 | 2019008901 | 0.620 ppb |
| 2019-07-09 | 2019018732 | 1.000 ppb |
| 2019-07-09 | 2019018734 | 0.650 ppb |
| 2019-07-09 | 2019018733 | 0.430 ppb |
| 2019-07-09 | 2019018731 | 0.530 ppb |
| 2019-10-10 | 2019029113 | 0.580 ppb |
| 2019-10-10 | 2019029112 | 1.40 ppb |
| 2019-10-10 | 2019029111 | 0.600 ppb |
| 2019-10-10 | 2019029110 | 1.30 ppb |