Know Your Environment. Protect Your Health.

Trichloroacetic acid

CTWC - Shoreline Region-Guilford 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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20188.63 ppb16162.10 ppb - 16.0 ppb
20196.33 ppb16162.40 ppb - 11.3 ppb
20209.17 ppb16163.60 ppb - 16.9 ppb
20219.40 ppb16164.20 ppb - 16.5 ppb
202210.1 ppb16164.40 ppb - 14.0 ppb
202314.0 ppb16165.20 ppb - 24.0 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
2018-03-15CA03074HAA55.30 ppb
2018-03-15CA03075HAA59.10 ppb
2018-03-15CA03076HAA59.00 ppb
2018-03-15CA03073HAA57.30 ppb
2018-06-26CA80045HAA516.0 ppb
2018-06-26CA80046HAA511.0 ppb
2018-06-26CA80047HAA59.30 ppb
2018-06-26CA80048HAA58.40 ppb
2018-09-12DBP 2005050429.60 ppb
2018-09-12DBP 20050504312.9 ppb
2018-09-12DBP 20050504413.9 ppb
2018-09-12DBP 20050504713.4 ppb
2018-12-17DBP 2005162372.10 ppb
2018-12-17DBP 2005162394.00 ppb
2018-12-17DBP 2005162384.00 ppb
2018-12-17DBP 2005162352.70 ppb
2019-03-11DBP 2005241502.40 ppb
2019-03-11DBP 2005241513.60 ppb
2019-03-11DBP 2005241524.70 ppb
2019-03-11DBP 2005241544.90 ppb
2019-06-14DBP 2005366723.80 ppb
2019-06-14DBP 2005366745.10 ppb
2019-06-14DBP 2005366805.40 ppb
2019-06-14DBP 2005366826.10 ppb
2019-09-17DBP 2005494797.10 ppb
2019-09-17DBP 2005494817.50 ppb
2019-09-17DBP 2005494807.20 ppb
2019-09-17DBP 2005494784.80 ppb
2019-12-10DBP 20055964310.1 ppb
2019-12-10DBP 20055964411.0 ppb
2019-12-10DBP 20055964511.3 ppb
2019-12-10DBP 2005596426.30 ppb
2020-03-03DBP 2005679985.60 ppb
2020-03-05DBP 2005685743.60 ppb
2020-03-05DBP 2005685756.40 ppb
2020-03-05DBP 2005685767.50 ppb
2020-06-16DBP 20057954613.1 ppb
2020-06-16DBP 20057954710.2 ppb
2020-06-16DBP 20057954512.1 ppb
2020-06-16DBP 2005795437.90 ppb
2020-09-17DBP 2005910515.40 ppb
2020-09-17DBP 2005910528.70 ppb
2020-09-17DBP 2005910539.00 ppb
2020-09-17DBP 20059105411.3 ppb
2020-12-22DBP 2006020307.00 ppb
2020-12-22DBP 20060203116.9 ppb
2020-12-22DBP 20060203211.0 ppb
2020-12-22DBP 20060203311.0 ppb
2021-03-15DBP 2006098458.30 ppb
2021-03-15DBP 2006098424.80 ppb
2021-03-15DBP 2006098436.70 ppb
2021-03-15DBP 2006098448.20 ppb
2021-06-02DBP 2006192649.20 ppb
2021-06-02DBP 20061926510.5 ppb
2021-06-02DBP 20061926610.9 ppb
2021-06-02DBP 2006192637.80 ppb
2021-09-14300059734 30005973811.6 ppb
2021-09-14300059735 30005974015.6 ppb
2021-09-14300059736 30005974215.4 ppb
2021-09-14300059737 30005974416.5 ppb
2021-12-09D300117675 3001176826.80 ppb
2021-12-09D300117674 3001176808.00 ppb
2021-12-09D300117673 3001176785.90 ppb
2021-12-09D300117672 3001176764.20 ppb
2022-03-09CK835194.40 ppb
2022-03-09CK835205.30 ppb
2022-03-09CK835215.60 ppb
2022-03-25CK952309.30 ppb
2022-06-16CL588446.20 ppb
2022-06-16CL5884514.0 ppb
2022-06-16CL5884610.00 ppb
2022-06-16CL5884713.0 ppb
2022-09-13CM307146.30 ppb
2022-09-13CM3069611.0 ppb
2022-09-13CM3069514.0 ppb
2022-09-13CM3069714.0 ppb
2022-12-01CM975879.60 ppb
2022-12-01CM9758812.0 ppb
2022-12-01CM9758913.0 ppb
2022-12-01CM9759014.0 ppb
2023-03-22CN664875.20 ppb
2023-03-22CN664887.80 ppb
2023-03-22CN664896.40 ppb
2023-03-22CN664908.10 ppb
2023-06-15CO3199719.0 ppb
2023-06-15CO3199916.0 ppb
2023-06-15CO3199816.0 ppb
2023-06-15CO319968.70 ppb
2023-09-05CO9068315.0 ppb
2023-09-05CO9068420.0 ppb
2023-09-05CO9068520.0 ppb
2023-09-05CO9068624.0 ppb
2023-12-07CP6507810.00 ppb
2023-12-07CP6507916.0 ppb
2023-12-07CP6508014.0 ppb
2023-12-07CP6508117.0 ppb