Dichloroacetic acid
City of Houston
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 18.5 ppb | 64 | 64 | 2.60 ppb - 40.2 ppb |
2015 | 21.3 ppb | 63 | 61 | ND - 45.8 ppb |
2016 | 18.2 ppb | 64 | 62 | ND - 39.5 ppb |
2017 | 15.0 ppb | 64 | 61 | ND - 24.5 ppb |
2018 | 19.8 ppb | 64 | 63 | ND - 38.4 ppb |
2019 | 20.1 ppb | 64 | 64 | 1.60 ppb - 37.7 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 |
---|---|---|
2014-03-05 | AC45667 | 28.5 ppb |
2014-03-05 | AC45666 | 25.9 ppb |
2014-03-05 | AC45649 | 22.9 ppb |
2014-03-05 | AC45663 | 34.7 ppb |
2014-03-05 | AC45650 | 27.2 ppb |
2014-03-05 | AC45652 | 20.6 ppb |
2014-03-05 | AC45687 | 40.2 ppb |
2014-03-05 | AC45688 | 4.20 ppb |
2014-03-05 | AC45662 | 24.2 ppb |
2014-03-05 | AC45665 | 35.2 ppb |
2014-03-05 | AC45651 | 23.0 ppb |
2014-03-05 | AC45669 | 29.1 ppb |
2014-03-05 | AC45648 | 25.3 ppb |
2014-03-06 | AC45965 | 29.1 ppb |
2014-03-06 | AC45943 | 29.4 ppb |
2014-03-06 | AC45968 | 30.1 ppb |
2014-05-19 | AC54558 | 21.1 ppb |
2014-05-19 | AC54559 | 21.7 ppb |
2014-05-19 | AC54574 | 19.5 ppb |
2014-05-19 | AC54560 | 19.5 ppb |
2014-05-19 | AC54566 | 16.4 ppb |
2014-05-19 | AC54552 | 19.1 ppb |
2014-05-19 | AC54556 | 16.6 ppb |
2014-05-19 | AC54563 | 21.8 ppb |
2014-05-19 | AC54553 | 21.4 ppb |
2014-05-19 | AC54568 | 20.6 ppb |
2014-05-20 | AC54716 | 5.70 ppb |
2014-05-20 | AC54748 | 18.1 ppb |
2014-05-20 | AC54708 | 16.2 ppb |
2014-05-20 | AC54719 | 18.9 ppb |
2014-05-20 | AC54715 | 20.0 ppb |
2014-05-20 | AC54713 | 5.90 ppb |
2014-07-15 | AC59753 | 19.7 ppb |
2014-07-15 | AC59757 | 13.4 ppb |
2014-07-15 | AC59754 | 19.7 ppb |
2014-07-15 | AC59755 | 14.9 ppb |
2014-07-15 | AC59752 | 18.3 ppb |
2014-07-15 | AC59749 | 14.5 ppb |
2014-07-15 | AC59770 | 19.0 ppb |
2014-07-15 | AC59769 | 22.6 ppb |
2014-07-15 | AC59750 | 19.4 ppb |
2014-07-15 | AC59751 | 23.2 ppb |
2014-07-15 | AC59756 | 21.1 ppb |
2014-07-16 | AC59879 | 21.0 ppb |
2014-07-16 | AC59878 | 20.2 ppb |
2014-07-16 | AC59892 | 17.5 ppb |
2014-07-16 | AC59893 | 2.60 ppb |
2014-07-16 | AC59897 | 19.8 ppb |
2014-12-18 | AC75440 | 12.2 ppb |
2014-12-18 | AC75453 | 12.7 ppb |
2014-12-18 | AC75448 | 12.2 ppb |
2014-12-18 | AC75446 | 11.2 ppb |
2014-12-18 | AC75451 | 10.1 ppb |
2014-12-18 | AC75447 | 11.1 ppb |
2014-12-19 | AC75631 | 12.3 ppb |
2014-12-19 | AC75628 | 10.3 ppb |
2014-12-19 | AC75649 | 12.1 ppb |
2014-12-19 | AC75637 | 10.00 ppb |
2014-12-19 | AC75645 | 13.1 ppb |
2014-12-19 | AC75629 | 7.50 ppb |
2014-12-19 | AC75625 | 13.2 ppb |
2014-12-19 | AC75626 | 14.1 ppb |
2014-12-19 | AC75638 | 13.0 ppb |
2014-12-19 | AC75633 | 12.7 ppb |
2015-03-04 | AC82676 | 13.7 ppb |
2015-03-04 | AC82679 | 13.9 ppb |
2015-03-04 | AC82733 | 16.6 ppb |
2015-03-04 | AC82669 | 13.0 ppb |
2015-03-04 | AC82675 | 14.6 ppb |
2015-03-04 | AC82671 | 15.2 ppb |
2015-03-04 | AC82728 | 14.7 ppb |
2015-03-04 | AC82667 | 14.2 ppb |
2015-03-04 | AC82672 | 14.1 ppb |
2015-03-04 | AC82668 | 15.2 ppb |
2015-03-04 | AC82664 | 16.1 ppb |
2015-03-04 | AC82673 | 14.4 ppb |
2015-03-05 | AC82712 | 9.50 ppb |
2015-03-05 | AC82708 | 9.10 ppb |
2015-03-05 | AC82707 | 9.20 ppb |
2015-03-05 | AC82688 | 19.1 ppb |
2015-06-16 | AC96151 | 41.6 ppb |
2015-06-16 | AC96154 | 31.8 ppb |
2015-06-16 | AC96145 | 39.1 ppb |
2015-06-16 | AC96139 | 31.6 ppb |
2015-06-16 | AC96142 | 38.0 ppb |
2015-06-16 | AC96137 | 41.7 ppb |
2015-06-16 | AC96155 | 35.4 ppb |
2015-06-16 | AC96150 | 44.6 ppb |
2015-06-16 | AC96138 | 43.6 ppb |
2015-06-17 | AC96243 | 44.5 ppb |
2015-06-17 | AC96260 | 39.0 ppb |
2015-06-17 | AC96262 | 44.1 ppb |
2015-06-17 | AC96274 | 40.9 ppb |
2015-06-17 | AC96273 | 45.8 ppb |
2015-06-17 | AC96265 | 40.2 ppb |
2015-09-16 | AD07294 | 11.8 ppb |
2015-09-16 | AD07297 | 17.3 ppb |
2015-09-16 | AD07293 | 19.6 ppb |
2015-09-16 | AD07312 | 14.7 ppb |
2015-09-16 | AD07313 | 16.3 ppb |
2015-09-16 | AD07304 | 19.2 ppb |
2015-09-16 | AD07302 | 15.5 ppb |
2015-09-16 | AD07311 | 11.9 ppb |
2015-09-16 | AD07292 | 17.0 ppb |
2015-09-16 | AD07329 | 21.1 ppb |
2015-09-16 | AD07327 | 15.7 ppb |
2015-09-17 | AD07537 | 14.3 ppb |
2015-09-17 | AD07538 | 13.5 ppb |
2015-09-17 | AD07563 | 13.6 ppb |
2015-09-17 | AD07536 | ND |
2015-09-17 | AD07546 | 16.6 ppb |
2015-11-16 | AD13562 | 23.2 ppb |
2015-11-16 | AD13618 | 23.0 ppb |
2015-11-16 | AD13561 | 14.6 ppb |
2015-11-16 | AD13559 | 20.8 ppb |
2015-11-16 | AD13619 | 20.0 ppb |
2015-11-16 | AD13558 | 24.0 ppb |
2015-11-16 | AD13565 | 12.8 ppb |
2015-11-16 | AD13556 | 27.3 ppb |
2015-11-16 | AD13557 | 22.7 ppb |
2015-11-16 | AD13560 | 16.6 ppb |
2015-11-17 | AD13768 | 14.5 ppb |
2015-11-17 | AD13773 | 16.8 ppb |
2015-11-17 | AD13767 | 16.0 ppb |
2015-11-17 | AD13772 | 15.6 ppb |
2015-11-17 | AD13771 | ND |
2015-11-17 | AD13766 | 8.90 ppb |
2016-03-16 | AD29018 | 21.2 ppb |
2016-03-16 | AD29033 | 20.7 ppb |
2016-03-16 | AD29030 | 20.6 ppb |
2016-03-16 | AD29037 | 26.2 ppb |
2016-03-16 | AD29019 | 21.6 ppb |
2016-03-16 | AD29027 | 18.8 ppb |
2016-03-16 | AD29029 | 19.8 ppb |
2016-03-16 | AD29036 | 21.6 ppb |
2016-03-16 | AD29032 | 14.4 ppb |
2016-03-16 | AD29026 | 21.9 ppb |
2016-03-17 | AD29319 | 25.7 ppb |
2016-03-17 | AD29323 | 26.7 ppb |
2016-03-17 | AD29322 | 24.5 ppb |
2016-03-17 | AD29318 | 25.6 ppb |
2016-03-17 | AD29320 | ND |
2016-03-17 | AD29321 | 24.6 ppb |
2016-06-15 | AD40718 | 32.7 ppb |
2016-06-15 | AD40714 | 28.9 ppb |
2016-06-15 | AD40722 | 34.7 ppb |
2016-06-15 | AD40725 | 27.6 ppb |
2016-06-15 | AD40726 | 37.4 ppb |
2016-06-15 | AD40716 | 29.6 ppb |
2016-06-15 | AD40719 | 32.4 ppb |
2016-06-15 | AD40710 | 26.0 ppb |
2016-06-15 | AD40730 | 32.8 ppb |
2016-06-15 | AD40727 | 33.3 ppb |
2016-06-15 | AD40720 | 38.5 ppb |
2016-06-15 | AD40717 | 22.6 ppb |
2016-06-16 | AD40972 | 29.5 ppb |
2016-06-16 | AD40971 | 27.1 ppb |
2016-06-16 | AD40964 | ND |
2016-06-16 | AD40968 | 39.5 ppb |
2016-09-20 | AD50324 | 15.0 ppb |
2016-09-20 | AD50327 | 14.9 ppb |
2016-09-20 | AD50330 | 12.3 ppb |
2016-09-20 | AD50329 | 14.0 ppb |
2016-09-20 | AD50325 | 12.9 ppb |
2016-09-20 | AD50328 | 13.7 ppb |
2016-09-20 | AD50326 | 11.6 ppb |
2016-09-21 | AD50707 | 14.0 ppb |
2016-09-21 | AD50686 | 18.8 ppb |
2016-09-21 | AD50697 | 14.4 ppb |
2016-09-21 | AD50708 | 13.1 ppb |
2016-09-21 | AD50712 | 12.5 ppb |
2016-09-21 | AD50710 | 1.90 ppb |
2016-09-21 | AD50696 | 14.5 ppb |
2016-09-21 | AD50706 | 12.8 ppb |
2016-09-21 | AD50695 | 12.5 ppb |
2016-11-17 | AD58543 | 10.8 ppb |
2016-11-17 | AD58538 | 10.5 ppb |
2016-11-17 | AD58539 | 13.2 ppb |
2016-11-17 | AD58536 | 10.2 ppb |
2016-11-17 | AD58544 | 10.2 ppb |
2016-11-17 | AD58545 | 11.5 ppb |
2016-11-18 | AD58825 | 9.30 ppb |
2016-11-18 | AD58817 | 6.50 ppb |
2016-11-18 | AD58820 | 9.00 ppb |
2016-11-18 | AD58816 | 3.80 ppb |
2016-11-18 | AD58818 | 8.60 ppb |
2016-11-18 | AD58815 | 6.60 ppb |
2016-11-18 | AD58819 | 8.30 ppb |
2016-11-18 | AD58814 | 7.30 ppb |
2016-11-21 | AD58774 | 11.4 ppb |
2016-11-21 | AD58775 | 11.3 ppb |
2017-02-28 | AD72422 | 15.2 ppb |
2017-02-28 | AD72419 | 15.7 ppb |
2017-02-28 | AD72424 | 10.9 ppb |
2017-02-28 | AD72399 | 12.1 ppb |
2017-02-28 | AD72421 | 14.6 ppb |
2017-02-28 | AD72420 | 12.4 ppb |
2017-02-28 | AD72398 | 12.7 ppb |
2017-02-28 | AD72418 | 14.4 ppb |
2017-02-28 | AD72423 | 18.0 ppb |
2017-02-28 | AD72397 | 11.9 ppb |
2017-03-01 | AD72739 | 13.0 ppb |
2017-03-01 | AD72742 | 12.5 ppb |
2017-03-01 | AD72745 | 12.4 ppb |
2017-03-01 | AD72737 | 11.7 ppb |
2017-03-01 | AD72740 | ND |
2017-03-01 | AD72738 | 13.7 ppb |
2017-04-26 | AD81142 | 15.2 ppb |
2017-04-26 | AD81144 | 14.3 ppb |
2017-04-26 | AD81139 | 16.5 ppb |
2017-04-26 | AD81140 | 14.0 ppb |
2017-04-26 | AD81136 | 15.5 ppb |
2017-04-26 | AD81135 | 17.8 ppb |
2017-04-26 | AD81143 | 15.9 ppb |
2017-04-26 | AD81141 | 12.7 ppb |
2017-04-26 | AD81145 | 11.6 ppb |
2017-04-26 | AD81146 | 14.4 ppb |
2017-04-26 | AD81137 | 17.2 ppb |
2017-04-26 | AD81138 | 15.6 ppb |
2017-04-27 | AD81479 | 16.1 ppb |
2017-04-27 | AD81475 | 15.2 ppb |
2017-04-27 | AD81478 | ND |
2017-04-27 | AD81477 | 14.7 ppb |
2017-07-25 | AD90530 | 16.3 ppb |
2017-07-25 | AD90522 | 21.2 ppb |
2017-07-25 | AD90525 | 20.7 ppb |
2017-07-25 | AD90543 | 17.5 ppb |
2017-07-25 | AD90545 | 11.8 ppb |
2017-07-25 | AD90544 | 19.6 ppb |
2017-07-25 | AD90523 | 17.1 ppb |
2017-07-25 | AD90532 | 17.0 ppb |
2017-07-25 | AD90524 | 18.7 ppb |
2017-07-25 | AD90531 | 21.4 ppb |
2017-07-25 | AD90521 | 14.2 ppb |
2017-07-26 | AD90799 | 17.1 ppb |
2017-07-26 | AD90804 | 17.3 ppb |
2017-07-26 | AD90796 | 17.2 ppb |
2017-07-26 | AD90797 | 7.00 ppb |
2017-07-26 | AD90802 | 19.5 ppb |
2017-11-15 | AE04936 | 21.0 ppb |
2017-11-15 | AE04933 | 20.5 ppb |
2017-11-15 | AE04925 | 19.0 ppb |
2017-11-15 | AE04930 | 18.7 ppb |
2017-11-15 | AE04931 | 5.40 ppb |
2017-11-15 | AE04924 | 19.2 ppb |
2017-11-15 | AE04926 | 15.3 ppb |
2017-11-15 | AE04927 | ND |
2017-11-15 | AE04929 | 17.5 ppb |
2017-11-15 | AE04935 | 17.3 ppb |
2017-11-15 | AE04928 | 17.1 ppb |
2017-11-15 | AE04934 | 24.5 ppb |
2017-11-15 | AE04932 | 14.1 ppb |
2017-11-16 | AE05180 | 15.5 ppb |
2017-11-16 | AE05181 | 14.8 ppb |
2017-11-16 | AE05182 | 15.4 ppb |
2018-02-07 | AE12988 | 20.2 ppb |
2018-02-07 | AE12993 | 18.8 ppb |
2018-02-07 | AE12992 | 20.9 ppb |
2018-02-07 | AE12989 | 24.3 ppb |
2018-02-07 | AE13012 | 22.9 ppb |
2018-02-07 | AE12952 | 18.4 ppb |
2018-02-07 | AE12999 | 21.2 ppb |
2018-02-07 | AE12958 | 25.1 ppb |
2018-02-08 | AE12996 | 18.8 ppb |
2018-02-08 | AE12990 | 15.0 ppb |
2018-02-08 | AE12963 | 13.4 ppb |
2018-02-08 | AE12991 | 16.8 ppb |
2018-02-08 | AE13014 | 5.20 ppb |
2018-02-08 | AE12997 | 21.4 ppb |
2018-02-08 | AE13010 | 24.0 ppb |
2018-02-08 | AE13011 | 19.9 ppb |
2018-04-17 | AE22960 | 32.1 ppb |
2018-04-17 | AE22998 | 38.4 ppb |
2018-04-17 | AE22956 | 33.4 ppb |
2018-04-17 | AE22955 | 28.6 ppb |
2018-04-17 | AE22996 | 26.9 ppb |
2018-04-17 | AE22961 | 31.7 ppb |
2018-04-17 | AE22953 | 29.5 ppb |
2018-04-17 | AE22994 | 36.5 ppb |
2018-04-17 | AE22959 | 25.7 ppb |
2018-04-18 | AE22995 | 28.0 ppb |
2018-04-18 | AE22958 | 25.3 ppb |
2018-04-18 | AE22962 | 22.3 ppb |
2018-04-18 | AE22966 | 20.2 ppb |
2018-04-18 | AE22965 | 1.10 ppb |
2018-04-18 | AE22954 | 30.2 ppb |
2018-05-22 | AE27203 | 20.7 ppb |
2018-08-28 | AE38800 | 15.3 ppb |
2018-08-28 | AE38798 | 10.2 ppb |
2018-08-28 | AE38793 | 15.3 ppb |
2018-08-28 | AE38807 | 13.0 ppb |
2018-08-28 | AE38796 | 18.5 ppb |
2018-08-28 | AE38805 | 16.0 ppb |
2018-08-28 | AE38803 | 14.0 ppb |
2018-08-28 | AE38792 | 14.1 ppb |
2018-08-28 | AE38799 | 15.3 ppb |
2018-08-28 | AE38797 | 15.7 ppb |
2018-08-28 | AE38794 | 18.9 ppb |
2018-08-28 | AE38795 | 14.6 ppb |
2018-08-29 | AE38802 | 13.1 ppb |
2018-08-29 | AE38806 | 13.1 ppb |
2018-08-29 | AE38801 | ND |
2018-08-29 | AE38804 | 15.1 ppb |
2018-11-13 | AE46051 | 19.5 ppb |
2018-11-13 | AE46052 | 14.7 ppb |
2018-11-13 | AE46033 | 20.4 ppb |
2018-11-13 | AE46049 | 18.9 ppb |
2018-11-13 | AE46044 | 19.4 ppb |
2018-11-13 | AE46050 | 21.9 ppb |
2018-11-13 | AE46045 | 16.6 ppb |
2018-11-13 | AE46055 | 19.6 ppb |
2018-11-13 | AE46037 | 19.6 ppb |
2018-11-13 | AE46054 | 23.1 ppb |
2018-11-13 | AE46038 | 10.6 ppb |
2018-11-13 | AE46039 | 20.6 ppb |
2018-11-14 | AE46042 | 22.4 ppb |
2018-11-14 | AE46043 | 20.7 ppb |
2018-11-14 | AE46058 | 7.90 ppb |
2018-11-14 | AE46053 | 30.1 ppb |
2019-01-15 | AE50125 | 23.0 ppb |
2019-01-15 | AE50069 | 27.3 ppb |
2019-01-15 | AE50072 | 28.0 ppb |
2019-01-15 | AE50068 | 30.0 ppb |
2019-01-15 | AE50067 | 25.1 ppb |
2019-01-15 | AE50075 | 26.5 ppb |
2019-01-15 | AE50084 | 29.1 ppb |
2019-01-15 | AE50070 | 27.7 ppb |
2019-01-15 | AE50071 | 15.7 ppb |
2019-01-15 | AE50093 | 28.0 ppb |
2019-01-16 | AE50087 | 27.5 ppb |
2019-01-16 | AE50074 | 27.5 ppb |
2019-01-16 | AE50088 | 28.5 ppb |
2019-01-16 | AE50080 | 26.2 ppb |
2019-01-16 | AE50073 | 1.60 ppb |
2019-01-16 | AE50126 | 37.7 ppb |
2019-04-10 | AE62008 | 17.5 ppb |
2019-04-10 | AE62027 | 16.8 ppb |
2019-04-10 | AE62002 | 18.0 ppb |
2019-04-10 | AE62030 | 15.4 ppb |
2019-04-10 | AE62006 | 17.5 ppb |
2019-04-10 | AE62007 | 15.9 ppb |
2019-04-10 | AE62019 | 15.9 ppb |
2019-04-10 | AE62020 | 18.5 ppb |
2019-04-10 | AE62029 | 13.3 ppb |
2019-04-10 | AE61994 | 12.4 ppb |
2019-04-11 | AE61988 | 16.7 ppb |
2019-04-11 | AE61985 | 19.7 ppb |
2019-04-11 | AE61983 | 15.6 ppb |
2019-04-11 | AE61984 | 13.0 ppb |
2019-04-11 | AE61986 | 6.70 ppb |
2019-04-11 | AE61987 | 20.4 ppb |
2019-07-24 | AE75953 | 10.4 ppb |
2019-07-24 | AE75954 | 22.8 ppb |
2019-07-24 | AE75952 | 17.9 ppb |
2019-07-24 | AE75955 | 24.1 ppb |
2019-07-24 | AE75951 | 22.8 ppb |
2019-07-24 | AE75949 | 21.9 ppb |
2019-07-24 | AE75950 | 14.4 ppb |
2019-07-24 | AE75944 | 23.0 ppb |
2019-07-24 | AE75945 | 17.6 ppb |
2019-07-24 | AE75956 | 15.8 ppb |
2019-07-25 | AE75909 | 25.0 ppb |
2019-07-25 | AE75904 | 19.9 ppb |
2019-07-25 | AE75910 | 22.6 ppb |
2019-07-25 | AE75906 | 17.5 ppb |
2019-07-25 | AE75943 | 10.5 ppb |
2019-07-25 | AE75942 | 19.2 ppb |
2019-10-09 | AE86125 | 1.70 ppb |
2019-10-09 | AE86124 | 29.0 ppb |
2019-10-09 | AE86127 | 17.4 ppb |
2019-10-09 | AE86128 | 27.6 ppb |
2019-10-09 | AE86126 | 27.6 ppb |
2019-10-09 | AE86122 | 25.2 ppb |
2019-10-09 | AE86121 | 27.1 ppb |
2019-10-09 | AE86129 | 22.8 ppb |
2019-10-09 | AE86123 | 18.1 ppb |
2019-10-10 | AE86286 | 16.6 ppb |
2019-10-10 | AE86282 | 16.6 ppb |
2019-10-10 | AE86285 | 17.9 ppb |
2019-10-10 | AE86281 | 19.8 ppb |
2019-10-10 | AE86283 | 10.6 ppb |
2019-10-10 | AE86284 | 16.5 ppb |
2019-10-10 | AE86287 | 22.0 ppb |