Know Your Environment. Protect Your Health.

Trichloroacetic acid

Thousand Trails San Benito Preserve

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)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
20191.50 ppb221.000 ppb - 2.00 ppb
2020ND20ND
2021ND20ND
20221.000 ppb21ND - 2.00 ppb
20233.50 ppb21ND - 7.00 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
2018-09-13CA3500505_DST_802-201809131041ND
2018-09-13CA3500505_DST_801-201809131126ND
2019-09-27CA3500505_DST_801-2019092707402.00 ppb
2019-09-27CA3500505_DST_802-2019092707301.000 ppb
2020-09-22CA3500505_DST_801-202009221413ND
2020-09-22CA3500505_DST_802-202009221239ND
2021-09-08CA3500505_DST_802-202109080620ND
2021-09-08CA3500505_DST_801-202109080657ND
2022-09-26CA3500505_DST_802-2022092615112.00 ppb
2022-09-26CA3500505_DST_801-202209261456ND
2023-08-22CA3500505_DST_801-202308221142ND
2023-08-22CA3500505_DST_802-2023082210017.00 ppb