Dichloroacetic acid
Shreveport 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 |
|---|---|---|---|---|
| 2018 | 29.9 ppb | 64 | 64 | 2.40 ppb - 51.4 ppb |
| 2019 | 35.0 ppb | 100 | 100 | 8.60 ppb - 169.0 ppb |
| 2020 | 17.9 ppb | 32 | 32 | 11.2 ppb - 26.4 ppb |
| 2021 | 18.4 ppb | 32 | 32 | 7.60 ppb - 33.0 ppb |
| 2022 | 12.8 ppb | 32 | 32 | 10.2 ppb - 15.8 ppb |
| 2023 | 20.8 ppb | 32 | 32 | 6.30 ppb - 36.9 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 |
|---|---|---|
| 2018-03-27 | 35382527001 | 38.3 ppb |
| 2018-03-27 | 35382527002 | 35.3 ppb |
| 2018-03-27 | 35382527003 | 36.4 ppb |
| 2018-03-27 | 35382527004 | 38.0 ppb |
| 2018-03-27 | 35382527005 | 35.7 ppb |
| 2018-03-27 | 35382527006 | 35.7 ppb |
| 2018-03-27 | 35382527007 | 33.0 ppb |
| 2018-03-27 | 35382527008 | 22.9 ppb |
| 2018-03-27 | 35382527001 | 38.3 ppb |
| 2018-03-27 | 35382527002 | 35.3 ppb |
| 2018-03-27 | 35382527003 | 36.4 ppb |
| 2018-03-27 | 35382527004 | 38.0 ppb |
| 2018-03-27 | 35382527005 | 35.7 ppb |
| 2018-03-27 | 35382527006 | 35.7 ppb |
| 2018-03-27 | 35382527007 | 33.0 ppb |
| 2018-03-27 | 35382527008 | 22.9 ppb |
| 2018-06-07 | 35397229001 | 51.4 ppb |
| 2018-06-07 | 35397229002 | 37.9 ppb |
| 2018-06-07 | 35397229003 | 36.3 ppb |
| 2018-06-07 | 35397229004 | 37.5 ppb |
| 2018-06-07 | 35397229005 | 38.5 ppb |
| 2018-06-07 | 35397229006 | 39.5 ppb |
| 2018-06-07 | 35397229007 | 39.3 ppb |
| 2018-06-07 | 35397229008 | 33.1 ppb |
| 2018-06-07 | 35397229001 | 51.4 ppb |
| 2018-06-07 | 35397229002 | 37.9 ppb |
| 2018-06-07 | 35397229003 | 36.3 ppb |
| 2018-06-07 | 35397229004 | 37.5 ppb |
| 2018-06-07 | 35397229005 | 38.5 ppb |
| 2018-06-07 | 35397229006 | 39.5 ppb |
| 2018-06-07 | 35397229007 | 39.3 ppb |
| 2018-06-07 | 35397229008 | 33.1 ppb |
| 2018-09-13 | 35417895001 | 11.9 ppb |
| 2018-09-13 | 35417895002 | 10.5 ppb |
| 2018-09-13 | 35417895003 | 12.5 ppb |
| 2018-09-13 | 35417895004 | 14.1 ppb |
| 2018-09-13 | 35417895005 | 15.1 ppb |
| 2018-09-13 | 35417895006 | 8.90 ppb |
| 2018-09-13 | 35417895007 | 8.80 ppb |
| 2018-09-13 | 35417895008 | 15.0 ppb |
| 2018-09-13 | 35417895001 | 11.9 ppb |
| 2018-09-13 | 35417895002 | 10.5 ppb |
| 2018-09-13 | 35417895003 | 12.5 ppb |
| 2018-09-13 | 35417895004 | 14.1 ppb |
| 2018-09-13 | 35417895005 | 15.1 ppb |
| 2018-09-13 | 35417895006 | 8.90 ppb |
| 2018-09-13 | 35417895007 | 8.80 ppb |
| 2018-09-13 | 35417895008 | 15.0 ppb |
| 2018-12-05 | 35435846001 | 41.2 ppb |
| 2018-12-05 | 35435846002 | 39.0 ppb |
| 2018-12-05 | 35435846003 | 35.4 ppb |
| 2018-12-05 | 35435846004 | 35.8 ppb |
| 2018-12-05 | 35435846005 | 39.4 ppb |
| 2018-12-05 | 35435846006 | 37.9 ppb |
| 2018-12-05 | 35435846007 | 39.1 ppb |
| 2018-12-05 | 35435846008 | 2.40 ppb |
| 2018-12-05 | 35435846001 | 41.2 ppb |
| 2018-12-05 | 35435846002 | 39.0 ppb |
| 2018-12-05 | 35435846003 | 35.4 ppb |
| 2018-12-05 | 35435846004 | 35.8 ppb |
| 2018-12-05 | 35435846005 | 39.4 ppb |
| 2018-12-05 | 35435846006 | 37.9 ppb |
| 2018-12-05 | 35435846007 | 39.1 ppb |
| 2018-12-05 | 35435846008 | 2.40 ppb |
| 2019-03-01 | 35451814001 | 38.6 ppb |
| 2019-03-01 | 35451814002 | 35.8 ppb |
| 2019-03-01 | 35451814003 | 36.0 ppb |
| 2019-03-01 | 35451814004 | 102.0 ppb |
| 2019-03-01 | 35451814005 | 36.6 ppb |
| 2019-03-01 | 35451814006 | 34.3 ppb |
| 2019-03-01 | 35451814007 | 31.3 ppb |
| 2019-03-01 | 35451814008 | 169.0 ppb |
| 2019-03-01 | 35451814001 | 38.6 ppb |
| 2019-03-01 | 35451814002 | 35.8 ppb |
| 2019-03-01 | 35451814003 | 36.0 ppb |
| 2019-03-01 | 35451814004 | 102.0 ppb |
| 2019-03-01 | 35451814005 | 36.6 ppb |
| 2019-03-01 | 35451814006 | 34.3 ppb |
| 2019-03-01 | 35451814007 | 31.3 ppb |
| 2019-03-01 | 35451814008 | 169.0 ppb |
| 2019-03-22 | 35457044001 | 33.2 ppb |
| 2019-03-22 | 35457044002 | 53.5 ppb |
| 2019-03-22 | 35457044001 | 33.2 ppb |
| 2019-03-22 | 35457044002 | 53.5 ppb |
| 2019-06-13 | 35475662001 | 74.1 ppb |
| 2019-06-13 | 35475662002 | 70.5 ppb |
| 2019-06-13 | 35475662003 | 66.7 ppb |
| 2019-06-13 | 35475662004 | 69.5 ppb |
| 2019-06-13 | 35475662005 | 63.6 ppb |
| 2019-06-13 | 35475662006 | 67.1 ppb |
| 2019-06-13 | 35475662007 | 59.1 ppb |
| 2019-06-13 | 35475662008 | 64.5 ppb |
| 2019-06-13 | 35475662001 | 74.1 ppb |
| 2019-06-13 | 35475662002 | 70.5 ppb |
| 2019-06-13 | 35475662003 | 66.7 ppb |
| 2019-06-13 | 35475662004 | 69.5 ppb |
| 2019-06-13 | 35475662005 | 63.6 ppb |
| 2019-06-13 | 35475662006 | 67.1 ppb |
| 2019-06-13 | 35475662007 | 59.1 ppb |
| 2019-06-13 | 35475662008 | 64.5 ppb |
| 2019-07-02 | 35479704001 | 34.6 ppb |
| 2019-07-02 | 35479704002 | 33.6 ppb |
| 2019-07-02 | 35479704003 | 33.7 ppb |
| 2019-07-02 | 35479704004 | 30.2 ppb |
| 2019-07-02 | 35479704005 | 32.5 ppb |
| 2019-07-02 | 35479704006 | 31.4 ppb |
| 2019-07-02 | 35479704007 | 37.2 ppb |
| 2019-07-02 | 35479704008 | 37.6 ppb |
| 2019-07-02 | 35479704001 | 34.6 ppb |
| 2019-07-02 | 35479704002 | 33.6 ppb |
| 2019-07-02 | 35479704003 | 33.7 ppb |
| 2019-07-02 | 35479704004 | 30.2 ppb |
| 2019-07-02 | 35479704005 | 32.5 ppb |
| 2019-07-02 | 35479704006 | 31.4 ppb |
| 2019-07-02 | 35479704007 | 37.2 ppb |
| 2019-07-02 | 35479704008 | 37.6 ppb |
| 2019-09-11 | 35497308001 | 30.2 ppb |
| 2019-09-11 | 35497308002 | 19.8 ppb |
| 2019-09-11 | 35497308003 | 26.7 ppb |
| 2019-09-11 | 35497308004 | 25.1 ppb |
| 2019-09-11 | 35497308005 | 34.3 ppb |
| 2019-09-11 | 35497308006 | 21.6 ppb |
| 2019-09-11 | 35497308007 | 17.0 ppb |
| 2019-09-11 | 35497308008 | 24.1 ppb |
| 2019-09-11 | 35497308001 | 30.2 ppb |
| 2019-09-11 | 35497308002 | 19.8 ppb |
| 2019-09-11 | 35497308003 | 26.7 ppb |
| 2019-09-11 | 35497308004 | 25.1 ppb |
| 2019-09-11 | 35497308005 | 34.3 ppb |
| 2019-09-11 | 35497308006 | 21.6 ppb |
| 2019-09-11 | 35497308007 | 17.0 ppb |
| 2019-09-11 | 35497308008 | 24.1 ppb |
| 2019-09-27 | 35501135001 | 10.4 ppb |
| 2019-09-27 | 35501135002 | 9.90 ppb |
| 2019-09-27 | 35501135003 | 9.60 ppb |
| 2019-09-27 | 35501135004 | 9.50 ppb |
| 2019-09-27 | 35501135005 | 8.60 ppb |
| 2019-09-27 | 35501135006 | 8.90 ppb |
| 2019-09-27 | 35501135007 | 8.80 ppb |
| 2019-09-27 | 35501135008 | 8.80 ppb |
| 2019-09-27 | 35501135001 | 10.4 ppb |
| 2019-09-27 | 35501135002 | 9.90 ppb |
| 2019-09-27 | 35501135003 | 9.60 ppb |
| 2019-09-27 | 35501135004 | 9.50 ppb |
| 2019-09-27 | 35501135005 | 8.60 ppb |
| 2019-09-27 | 35501135006 | 8.90 ppb |
| 2019-09-27 | 35501135007 | 8.80 ppb |
| 2019-09-27 | 35501135008 | 8.80 ppb |
| 2019-12-03 | 35516630001 | 13.5 ppb |
| 2019-12-03 | 35516630002 | 11.4 ppb |
| 2019-12-03 | 35516630003 | 13.5 ppb |
| 2019-12-03 | 35516630004 | 11.6 ppb |
| 2019-12-03 | 35516630005 | 13.6 ppb |
| 2019-12-03 | 35516630006 | 11.1 ppb |
| 2019-12-03 | 35516630007 | 11.4 ppb |
| 2019-12-03 | 35516630008 | 12.6 ppb |
| 2019-12-03 | 35516630001 | 13.5 ppb |
| 2019-12-03 | 35516630002 | 11.4 ppb |
| 2019-12-03 | 35516630003 | 13.5 ppb |
| 2019-12-03 | 35516630004 | 11.6 ppb |
| 2019-12-03 | 35516630005 | 13.6 ppb |
| 2019-12-03 | 35516630006 | 11.1 ppb |
| 2019-12-03 | 35516630007 | 11.4 ppb |
| 2019-12-03 | 35516630008 | 12.6 ppb |
| 2020-03-05 | 35535607001 | 25.2 ppb |
| 2020-03-05 | 35535607002 | 21.7 ppb |
| 2020-03-05 | 35535607003 | 24.2 ppb |
| 2020-03-05 | 35535607004 | 21.9 ppb |
| 2020-03-05 | 35535607005 | 23.4 ppb |
| 2020-03-05 | 35535607006 | 21.6 ppb |
| 2020-03-05 | 35535607007 | 22.0 ppb |
| 2020-03-05 | 35535607008 | 26.4 ppb |
| 2020-06-19 | 35557881001 | 23.2 ppb |
| 2020-06-19 | 35557881002 | 19.4 ppb |
| 2020-06-19 | 35557881003 | 18.9 ppb |
| 2020-06-19 | 35557881004 | 18.5 ppb |
| 2020-06-19 | 35557881005 | 19.5 ppb |
| 2020-06-19 | 35557881006 | 19.2 ppb |
| 2020-06-19 | 35557881007 | 17.5 ppb |
| 2020-06-19 | 35557881008 | 23.0 ppb |
| 2020-09-18 | 35578994001 | 14.2 ppb |
| 2020-09-18 | 35578994002 | 12.5 ppb |
| 2020-09-18 | 35578994003 | 12.7 ppb |
| 2020-09-18 | 35578994004 | 11.3 ppb |
| 2020-09-18 | 35578994005 | 13.2 ppb |
| 2020-09-18 | 35578994006 | 11.4 ppb |
| 2020-09-18 | 35578994007 | 11.2 ppb |
| 2020-09-18 | 35578994008 | 12.3 ppb |
| 2020-12-10 | 35598373001 | 17.9 ppb |
| 2020-12-10 | 35598373002 | 17.5 ppb |
| 2020-12-10 | 35598373003 | 16.7 ppb |
| 2020-12-10 | 35598373004 | 15.3 ppb |
| 2020-12-10 | 35598373005 | 17.0 ppb |
| 2020-12-10 | 35598373006 | 15.4 ppb |
| 2020-12-10 | 35598373007 | 14.3 ppb |
| 2020-12-10 | 35598373008 | 15.8 ppb |
| 2021-03-12 | 35618927001 | 23.4 ppb |
| 2021-03-12 | 35618927002 | 22.6 ppb |
| 2021-03-12 | 35618927003 | 29.2 ppb |
| 2021-03-12 | 35618927004 | 28.0 ppb |
| 2021-03-12 | 35618927005 | 27.5 ppb |
| 2021-03-12 | 35618927006 | 26.6 ppb |
| 2021-03-12 | 35618927007 | 25.5 ppb |
| 2021-03-12 | 35618927008 | 28.4 ppb |
| 2021-06-24 | 35643518001 | 28.0 ppb |
| 2021-06-24 | 35643518002 | 28.3 ppb |
| 2021-06-24 | 35643518003 | 31.2 ppb |
| 2021-06-24 | 35643518004 | 30.1 ppb |
| 2021-06-24 | 35643518005 | 33.0 ppb |
| 2021-06-24 | 35643518006 | 31.2 ppb |
| 2021-06-24 | 35643518007 | 23.8 ppb |
| 2021-06-24 | 35643518008 | 30.7 ppb |
| 2021-09-29 | 35668338001 | 9.60 ppb |
| 2021-09-29 | 35668338002 | 9.30 ppb |
| 2021-09-29 | 35668338003 | 8.10 ppb |
| 2021-09-29 | 35668338004 | 8.50 ppb |
| 2021-09-29 | 35668338005 | 9.10 ppb |
| 2021-09-29 | 35668338006 | 11.5 ppb |
| 2021-09-29 | 35668338007 | 8.60 ppb |
| 2021-09-29 | 35668338008 | 11.0 ppb |
| 2021-12-21 | 35686344001 | 8.90 ppb |
| 2021-12-21 | 35686344002 | 7.60 ppb |
| 2021-12-21 | 35686344003 | 8.60 ppb |
| 2021-12-21 | 35686344004 | 8.10 ppb |
| 2021-12-21 | 35686344005 | 8.80 ppb |
| 2021-12-21 | 35686344006 | 9.20 ppb |
| 2021-12-21 | 35686344007 | 7.60 ppb |
| 2021-12-21 | 35686344008 | 8.00 ppb |
| 2022-03-28 | 35706866002 | 12.1 ppb |
| 2022-03-28 | 35706866003 | 11.4 ppb |
| 2022-03-28 | 35706866004 | 12.5 ppb |
| 2022-03-28 | 35706866005 | 11.7 ppb |
| 2022-03-28 | 35706866006 | 11.3 ppb |
| 2022-03-28 | 35706866007 | 11.8 ppb |
| 2022-03-28 | 35706866008 | 14.2 ppb |
| 2022-03-31 | 35707352001 | 14.9 ppb |
| 2022-06-14 | 35725215001 | 12.1 ppb |
| 2022-06-14 | 35725215002 | 13.4 ppb |
| 2022-06-14 | 35725215003 | 11.9 ppb |
| 2022-06-14 | 35725215004 | 11.9 ppb |
| 2022-06-14 | 35725215005 | 11.6 ppb |
| 2022-06-14 | 35725215006 | 12.6 ppb |
| 2022-06-14 | 35725215008 | 10.2 ppb |
| 2022-06-20 | 35726243001 | 11.9 ppb |
| 2022-09-06 | 35744728001 | 12.7 ppb |
| 2022-09-06 | 35744728002 | 14.2 ppb |
| 2022-09-06 | 35744728003 | 13.3 ppb |
| 2022-09-06 | 35744728004 | 12.4 ppb |
| 2022-09-06 | 35744728005 | 15.1 ppb |
| 2022-09-06 | 35744728006 | 15.8 ppb |
| 2022-09-06 | 35744728007 | 11.4 ppb |
| 2022-09-06 | 35744728008 | 12.3 ppb |
| 2022-12-12 | 35766141001 | 13.7 ppb |
| 2022-12-12 | 35766141002 | 13.3 ppb |
| 2022-12-12 | 35766141003 | 13.7 ppb |
| 2022-12-12 | 35766141004 | 13.6 ppb |
| 2022-12-12 | 35766141005 | 13.8 ppb |
| 2022-12-12 | 35766141006 | 13.1 ppb |
| 2022-12-12 | 35766141007 | 12.1 ppb |
| 2022-12-12 | 35766141008 | 12.9 ppb |
| 2023-03-21 | 35787436001 | 33.0 ppb |
| 2023-03-21 | 35787436002 | 32.7 ppb |
| 2023-03-21 | 35787436003 | 36.9 ppb |
| 2023-03-21 | 35787436004 | 33.3 ppb |
| 2023-03-21 | 35787436005 | 31.9 ppb |
| 2023-03-21 | 35787436006 | 30.7 ppb |
| 2023-03-21 | 35787436007 | 30.1 ppb |
| 2023-03-21 | 35787436008 | 23.8 ppb |
| 2023-06-28 | 35809787001 | 22.8 ppb |
| 2023-06-28 | 35809787002 | 22.0 ppb |
| 2023-06-28 | 35809787003 | 23.1 ppb |
| 2023-06-28 | 35809787004 | 23.6 ppb |
| 2023-06-28 | 35809787005 | 27.0 ppb |
| 2023-06-28 | 35809787006 | 25.1 ppb |
| 2023-06-28 | 35809787007 | 18.3 ppb |
| 2023-06-28 | 35809787008 | 22.0 ppb |
| 2023-09-19 | 35829295001 | 25.7 ppb |
| 2023-09-19 | 35829295002 | 21.5 ppb |
| 2023-09-19 | 35829295003 | 21.0 ppb |
| 2023-09-19 | 35829295004 | 20.9 ppb |
| 2023-09-19 | 35829295005 | 20.2 ppb |
| 2023-09-19 | 35829295006 | 20.5 ppb |
| 2023-09-19 | 35829295007 | 18.3 ppb |
| 2023-09-19 | 35829295008 | 22.7 ppb |
| 2023-12-19 | 35849361001 | 7.80 ppb |
| 2023-12-19 | 35849361002 | 7.20 ppb |
| 2023-12-19 | 35849361003 | 8.40 ppb |
| 2023-12-19 | 35849361004 | 8.30 ppb |
| 2023-12-19 | 35849361005 | 7.70 ppb |
| 2023-12-19 | 35849361006 | 6.30 ppb |
| 2023-12-19 | 35849361007 | 7.50 ppb |
| 2023-12-19 | 35849361008 | 6.70 ppb |