Know Your Environment. Protect Your Health.

Trichloroacetic acid

Montrose Boydell 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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.275 ppb82ND - 1.10 ppb
20190.275 ppb82ND - 1.10 ppb
20201.40 ppb82ND - 7.50 ppb
2021ND80ND
20228.90 ppb81ND - 71.2 ppb
20230.319 ppb81ND - 2.55 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
2018-01-0918010000102ND
2018-01-0918010000202ND
2018-04-1018102002801ND
2018-04-1018102002901ND
2018-07-0918193007301ND
2018-07-0918193007401ND
2018-10-09182840009011.10 ppb
2018-10-09182840007011.10 ppb
2019-02-2619059002201ND
2019-02-2619059002301ND
2019-04-0819101003001ND
2019-04-08191010032011.10 ppb
2019-08-0619220014501ND
2019-08-0619220014601ND
2019-10-07192830046011.10 ppb
2019-10-0719283004501ND
2020-01-2920030004701ND
2020-01-2920030004801ND
2020-04-2020114007901ND
2020-04-2020114007801ND
2020-07-2120204002601ND
2020-07-2120204002501ND
2020-10-20202960132017.50 ppb
2020-10-20202960133013.70 ppb
2021-01-1221014004101ND
2021-01-1221014004201ND
2021-04-2021112006301ND
2021-04-2021112006401ND
2021-07-2021203006301ND
2021-07-2021203006201ND
2021-10-1221287006101ND
2021-10-1221287006001ND
2022-01-112201301170171.2 ppb
2022-01-1122013011601ND
2022-04-19O197138-HAA-1ND
2022-04-19O197139-HAA-1ND
2022-07-20O199887-HAA-1ND
2022-07-20O199886-HAA-1ND
2022-10-18O202985-HAA-1ND
2022-10-18O202984-HAA-1ND
2023-01-10O205108-HAA-12.55 ppb
2023-02-13O206554-HAA-1ND
2023-04-24O208301-HAA-1ND
2023-04-24O208300-HAA-1ND
2023-07-19O210741-HAA-1ND
2023-07-19O210740-HAA-1ND
2023-10-18O213098-HAA-1ND
2023-10-18O213097-HAA-1ND