Trichloroacetic acid
Lake Shreve Estates Water System
Trichloroacetic 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 | 0.120 ppb | 16 | 2 | ND - 0.960 ppb |
| 2019 | 0.385 ppb | 20 | 14 | ND - 0.780 ppb |
| 2020 | 0.178 ppb | 8 | 2 | ND - 0.770 ppb |
| 2021 | 0.488 ppb | 8 | 6 | ND - 0.870 ppb |
| 2022 | 0.244 ppb | 8 | 4 | ND - 0.500 ppb |
| 2023 | 0.233 ppb | 8 | 3 | ND - 0.740 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.1 ppb
The EWG Health Guideline of 0.1 ppb for trichloroacetic 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 |
|---|---|---|
| 2018-02-16 | 35375107002 | ND |
| 2018-02-16 | 35375107001 | ND |
| 2018-02-16 | 35375107002 | ND |
| 2018-02-16 | 35375107001 | ND |
| 2018-05-10 | 35392005001 | ND |
| 2018-05-10 | 35392005002 | ND |
| 2018-05-10 | 35392005002 | ND |
| 2018-05-10 | 35392005001 | ND |
| 2018-08-03 | 35408675001 | ND |
| 2018-08-03 | 35408675002 | ND |
| 2018-08-03 | 35408675002 | ND |
| 2018-08-03 | 35408675001 | ND |
| 2018-11-15 | 35432195001 | ND |
| 2018-11-15 | 35432195002 | 0.960 ppb |
| 2018-11-15 | 35432195001 | ND |
| 2018-11-15 | 35432195002 | 0.960 ppb |
| 2019-02-26 | 35450785002 | 0.600 ppb |
| 2019-02-26 | 35450785001 | 0.690 ppb |
| 2019-02-26 | 35450785002 | 0.600 ppb |
| 2019-02-26 | 35450785001 | 0.690 ppb |
| 2019-05-10 | 35468313001 | 0.780 ppb |
| 2019-05-10 | 35468313002 | 0.760 ppb |
| 2019-05-10 | 35468313002 | 0.760 ppb |
| 2019-05-10 | 35468313001 | 0.780 ppb |
| 2019-08-01 | 35487187002 | ND |
| 2019-08-01 | 35487187002 | ND |
| 2019-08-01 | 35487187001 | 0.280 ppb |
| 2019-08-01 | 35487187001 | 0.280 ppb |
| 2019-08-15 | 35491152002 | 0.360 ppb |
| 2019-08-15 | 35491152001 | 0.380 ppb |
| 2019-08-15 | 35491152001 | 0.380 ppb |
| 2019-08-15 | 35491152002 | 0.360 ppb |
| 2019-11-21 | 35514607002 | ND |
| 2019-11-21 | 35514607001 | ND |
| 2019-11-21 | 35514607001 | ND |
| 2019-11-21 | 35514607002 | ND |
| 2020-02-14 | 35531183001 | ND |
| 2020-02-14 | 35531183002 | ND |
| 2020-05-22 | 35552061001 | ND |
| 2020-05-22 | 35552061002 | ND |
| 2020-08-14 | 35570960001 | ND |
| 2020-08-14 | 35570960002 | ND |
| 2020-11-30 | 35595406001 | 0.770 ppb |
| 2020-11-30 | 35595406002 | 0.650 ppb |
| 2021-02-22 | 35615351001 | 0.580 ppb |
| 2021-02-22 | 35615351002 | 0.520 ppb |
| 2021-05-07 | 35633214001 | 0.550 ppb |
| 2021-05-07 | 35633214002 | 0.560 ppb |
| 2021-08-27 | 35659286002 | ND |
| 2021-08-27 | 35659286001 | ND |
| 2021-11-10 | 35676804002 | 0.820 ppb |
| 2021-11-10 | 35676804001 | 0.870 ppb |
| 2022-02-17 | 35699343001 | 0.470 ppb |
| 2022-02-17 | 35699343002 | 0.480 ppb |
| 2022-05-23 | 35721022001 | ND |
| 2022-05-23 | 35721022002 | ND |
| 2022-08-19 | 35741491002 | ND |
| 2022-08-19 | 35741491001 | ND |
| 2022-11-07 | 35759796002 | 0.500 ppb |
| 2022-11-07 | 35759796001 | 0.500 ppb |
| 2023-02-15 | 35780675001 | ND |
| 2023-02-15 | 35780675002 | ND |
| 2023-05-25 | 35802618001 | 0.410 ppb |
| 2023-05-25 | 35802618002 | 0.740 ppb |
| 2023-08-29 | 35824654001 | ND |
| 2023-08-29 | 35824654002 | ND |
| 2023-11-09 | 35840812001 | 0.710 ppb |
| 2023-11-09 | 35840812002 | ND |