Know Your Environment. Protect Your Health.

Trichloroacetic acid

Aqua Pa Roaring Creek Division

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.

 

111

Samples

0

Samples exceeding legal limit (MCL)

95

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201823.3 ppb3126ND - 71.8 ppb
201911.5 ppb1614ND - 19.6 ppb
202010.9 ppb1614ND - 25.9 ppb
202118.5 ppb1615ND - 33.2 ppb
202215.2 ppb1613ND - 26.3 ppb
202311.4 ppb1613ND - 19.9 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
2018-02-12AF7622120.8 ppb
2018-02-12AF7622215.0 ppb
2018-02-12AF7622313.3 ppb
2018-02-12AF76224ND
2018-05-11AF8399835.0 ppb
2018-05-11AF8399927.2 ppb
2018-05-11AF8400028.1 ppb
2018-05-11AF84001ND
2018-08-13AF9268963.0 ppb
2018-08-13AF9269065.4 ppb
2018-08-13AF9269171.8 ppb
2018-08-13AF92692ND
2018-09-27AF9713651.4 ppb
2018-09-27AF9713727.7 ppb
2018-09-27AF9713532.6 ppb
2018-09-27AF97134ND
2018-09-28AF9714032.7 ppb
2018-09-28AF9714127.0 ppb
2018-09-28AF9713928.2 ppb
2018-09-28AF97138ND
2018-09-29AF9724230.6 ppb
2018-09-29AF9724117.7 ppb
2018-09-29AF9724023.2 ppb
2018-09-29AF972431.40 ppb
2018-09-30AF9724529.7 ppb
2018-09-30AF9724617.6 ppb
2018-09-30AF9729222.2 ppb
2018-11-14300218500112.4 ppb
2018-11-14300218500211.1 ppb
2018-11-14300218500316.2 ppb
2018-11-1430021850041.30 ppb
2019-02-12AG087338.10 ppb
2019-02-12AG087348.40 ppb
2019-02-12AG087358.00 ppb
2019-02-12AG08736ND
2019-05-14AG1771314.0 ppb
2019-05-14AG1771211.7 ppb
2019-05-14AG1771515.2 ppb
2019-05-14AG177141.70 ppb
2019-08-13AG2801619.6 ppb
2019-08-13AG2801715.1 ppb
2019-08-13AG2801815.4 ppb
2019-08-13AG28015ND
2019-11-12AG3935619.6 ppb
2019-11-12AG3935714.4 ppb
2019-11-12AG3935814.8 ppb
2019-11-12AG3935918.7 ppb
2020-02-1015.3 ppb
2020-02-1011.7 ppb
2020-02-109.90 ppb
2020-02-101.50 ppb
2020-05-1225.4 ppb
2020-05-1220.6 ppb
2020-05-1225.9 ppb
2020-05-12ND
2020-08-1112.5 ppb
2020-08-1112.0 ppb
2020-08-1113.2 ppb
2020-08-11ND
2020-11-097.60 ppb
2020-11-096.70 ppb
2020-11-098.10 ppb
2020-11-093.40 ppb
2021-02-1216.3 ppb
2021-02-1215.2 ppb
2021-02-1213.7 ppb
2021-02-1211.9 ppb
2021-05-1233.2 ppb
2021-05-1231.2 ppb
2021-05-1229.8 ppb
2021-05-12ND
2021-08-1014.0 ppb
2021-08-1016.0 ppb
2021-08-1012.0 ppb
2021-08-101.000 ppb
2021-11-1223.0 ppb
2021-11-1220.0 ppb
2021-11-1226.0 ppb
2021-11-1232.0 ppb
2022-02-1414.2 ppb
2022-02-1414.4 ppb
2022-02-1416.1 ppb
2022-02-14ND
2022-05-1225.1 ppb
2022-05-1225.6 ppb
2022-05-1226.3 ppb
2022-05-1222.5 ppb
2022-08-1013.9 ppb
2022-08-1013.4 ppb
2022-08-1015.4 ppb
2022-08-10ND
2022-11-0918.9 ppb
2022-11-0918.6 ppb
2022-11-0918.7 ppb
2022-11-09ND
2023-02-0919.9 ppb
2023-02-0916.5 ppb
2023-02-0916.9 ppb
2023-02-09ND
2023-05-1017.7 ppb
2023-05-1017.1 ppb
2023-05-1018.1 ppb
2023-05-10ND
2023-08-1011.4 ppb
2023-08-109.90 ppb
2023-08-1012.8 ppb
2023-08-102.00 ppb
2023-11-1413.8 ppb
2023-11-1411.0 ppb
2023-11-1415.2 ppb
2023-11-14ND