Know Your Environment. Protect Your Health.

Trichloroacetic acid

Bayview 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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.25 ppb21ND - 2.50 ppb
2019ND20ND
2020ND20ND
20210.500 ppb21ND - 1.000 ppb
20220.350 ppb21ND - 0.700 ppb
20231.30 ppb221.20 ppb - 1.40 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
2018-07-2640050292.50 ppb
2018-07-314007245ND
2019-07-234367010ND
2019-07-234367011ND
2020-07-234681221ND
2020-07-234681222ND
2021-08-1249919231.000 ppb
2021-08-124991922ND
2022-07-27630-40912-1-HAAND
2022-07-27630-40912-2-HAA0.700 ppb
2023-07-17630-66666-11.40 ppb
2023-07-17630-66666-21.20 ppb