Know Your Environment. Protect Your Health.

Trichloroacetic acid

LPWDN North Region

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.

 

128

Samples

0

Samples exceeding legal limit (MCL)

126

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.19 ppb32320.390 ppb - 2.00 ppb
20191.37 ppb3230ND - 2.30 ppb
20201.25 ppb16160.870 ppb - 1.80 ppb
20211.28 ppb16160.920 ppb - 1.80 ppb
20221.17 ppb16160.830 ppb - 1.70 ppb
20231.34 ppb16160.910 ppb - 2.00 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
2018-03-09353792780011.40 ppb
2018-03-09353792780021.10 ppb
2018-03-09353792780031.20 ppb
2018-03-09353792780040.480 ppb
2018-03-09353792780011.40 ppb
2018-03-09353792780021.10 ppb
2018-03-09353792780031.20 ppb
2018-03-09353792780040.480 ppb
2018-06-15353987160011.000 ppb
2018-06-15353987160021.20 ppb
2018-06-15353987160031.50 ppb
2018-06-15353987160040.440 ppb
2018-06-15353987160011.000 ppb
2018-06-15353987160021.20 ppb
2018-06-15353987160031.50 ppb
2018-06-15353987160040.440 ppb
2018-09-12354180150011.50 ppb
2018-09-12354180150021.80 ppb
2018-09-12354180150032.00 ppb
2018-09-12354180150040.900 ppb
2018-09-12354180150011.50 ppb
2018-09-12354180150021.80 ppb
2018-09-12354180150032.00 ppb
2018-09-12354180150040.900 ppb
2018-12-13354373820011.20 ppb
2018-12-13354373820021.40 ppb
2018-12-13354373820031.60 ppb
2018-12-13354373820040.390 ppb
2018-12-13354373820011.20 ppb
2018-12-13354373820021.40 ppb
2018-12-13354373820031.60 ppb
2018-12-13354373820040.390 ppb
2019-03-14354546200011.40 ppb
2019-03-14354546200021.70 ppb
2019-03-14354546200031.70 ppb
2019-03-1435454620004ND
2019-03-14354546200011.40 ppb
2019-03-14354546200021.70 ppb
2019-03-14354546200031.70 ppb
2019-03-1435454620004ND
2019-06-14354756660012.30 ppb
2019-06-14354756660021.50 ppb
2019-06-14354756660031.90 ppb
2019-06-14354756660041.40 ppb
2019-06-14354756660012.30 ppb
2019-06-14354756660021.50 ppb
2019-06-14354756660031.90 ppb
2019-06-14354756660041.40 ppb
2019-09-12354977880011.20 ppb
2019-09-12354977880021.50 ppb
2019-09-12354977880031.50 ppb
2019-09-12354977880041.20 ppb
2019-09-12354977880011.20 ppb
2019-09-12354977880021.50 ppb
2019-09-12354977880031.50 ppb
2019-09-12354977880041.20 ppb
2019-12-12355189090011.30 ppb
2019-12-12355189090021.10 ppb
2019-12-12355189090031.20 ppb
2019-12-12355189090041.000 ppb
2019-12-12355189090011.30 ppb
2019-12-12355189090021.10 ppb
2019-12-12355189090031.20 ppb
2019-12-12355189090041.000 ppb
2020-03-06355359190011.20 ppb
2020-03-06355359190021.000 ppb
2020-03-06355359190031.10 ppb
2020-03-06355359190040.970 ppb
2020-06-05355548260011.60 ppb
2020-06-05355548260021.20 ppb
2020-06-05355548260031.30 ppb
2020-06-05355548260041.10 ppb
2020-09-11355773430011.30 ppb
2020-09-11355773430021.000 ppb
2020-09-11355773430031.20 ppb
2020-09-11355773430040.870 ppb
2020-12-10355985210011.80 ppb
2020-12-10355985210021.40 ppb
2020-12-10355985210031.60 ppb
2020-12-10355985210041.30 ppb
2021-03-11356189320011.30 ppb
2021-03-11356189320021.10 ppb
2021-03-11356189320031.20 ppb
2021-03-11356189320041.10 ppb
2021-06-10356403110011.40 ppb
2021-06-10356403110021.10 ppb
2021-06-10356403110031.000 ppb
2021-06-10356403110040.920 ppb
2021-09-02356616100011.80 ppb
2021-09-02356616100021.40 ppb
2021-09-02356616100031.50 ppb
2021-09-02356616100041.30 ppb
2021-12-03356819260011.80 ppb
2021-12-03356819260021.30 ppb
2021-12-03356819260031.20 ppb
2021-12-03356819260041.10 ppb
2022-03-03357014500011.50 ppb
2022-03-03357014500021.20 ppb
2022-03-03357014500031.20 ppb
2022-03-03357014500041.10 ppb
2022-06-03357224320011.30 ppb
2022-06-03357224320020.980 ppb
2022-06-03357224320031.000 ppb
2022-06-03357224320040.940 ppb
2022-09-01357443390011.30 ppb
2022-09-01357443390020.890 ppb
2022-09-01357443390031.10 ppb
2022-09-01357443390040.830 ppb
2022-12-01357638030011.70 ppb
2022-12-01357638030021.20 ppb
2022-12-01357638030031.40 ppb
2022-12-01357638030041.10 ppb
2023-03-07357842630011.40 ppb
2023-03-07357842630021.10 ppb
2023-03-07357842630031.40 ppb
2023-03-07357842630041.000 ppb
2023-06-06358048840012.00 ppb
2023-06-06358048840021.60 ppb
2023-06-06358048840031.60 ppb
2023-06-06358048840041.40 ppb
2023-09-13358281460011.70 ppb
2023-09-13358281460021.000 ppb
2023-09-13358281460031.40 ppb
2023-09-13358281460040.910 ppb
2023-12-11358478460011.40 ppb
2023-12-11358478460021.20 ppb
2023-12-11358478460031.30 ppb
2023-12-11358478460041.10 ppb