Know Your Environment. Protect Your Health.

Trichloroacetic acid

Tri Try Water

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.725 ppb42ND - 1.80 ppb
20191.25 ppb43ND - 2.30 ppb
20201.28 ppb43ND - 2.00 ppb
20211.75 ppb43ND - 3.70 ppb
20220.700 ppb42ND - 1.70 ppb
20233.03 ppb43ND - 7.20 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
2018-03-21Q18118780021.10 ppb
2018-05-29Q1821228001ND
2018-09-20Q1837661001ND
2018-11-29Q18487460011.80 ppb
2019-02-28Q19087530022.30 ppb
2019-05-21Q19273110021.70 ppb
2019-09-03Q19614910021.000 ppb
2019-11-25Q1977988002ND
2020-03-02Q20077440021.10 ppb
2020-06-03Q2021994002ND
2020-09-01Q20348590022.00 ppb
2020-12-03Q20484230022.00 ppb
2021-03-08Q21059210021.80 ppb
2021-05-20Q2113240002ND
2021-08-25Q21231970013.70 ppb
2021-11-15Q21317500021.50 ppb
2022-03-03Q2207485001ND
2022-05-25Q22152000021.70 ppb
2022-09-08Q2226796002ND
2022-11-29Q22354010021.10 ppb
2023-03-14Q23100530021.000 ppb
2023-05-17Q2318621002ND
2023-08-24Q23361930023.90 ppb
2023-11-16Q23493780027.20 ppb