Know Your Environment. Protect Your Health.

Trichloroacetic acid

Connecticut Water Company - Northern Region-Western 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.

 

193

Samples

0

Samples exceeding legal limit (MCL)

186

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20189.14 ppb3230ND - 19.0 ppb
20197.52 ppb32320.600 ppb - 13.0 ppb
20208.05 ppb3332ND - 15.9 ppb
202110.4 ppb3230ND - 21.0 ppb
202211.2 ppb3230ND - 23.0 ppb
202312.3 ppb32321.40 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
2018-02-01BZ83504HAA514.0 ppb
2018-02-01BZ83505HAA518.0 ppb
2018-02-01BZ83506HAA519.0 ppb
2018-02-01BZ83507HAA518.0 ppb
2018-02-01BZ83508HAA59.30 ppb
2018-02-01BZ83509HAA511.0 ppb
2018-02-01BZ83510HAA59.20 ppb
2018-02-21BZ93283HAA510.00 ppb
2018-05-03CA41161HAA510.00 ppb
2018-05-03CA41162HAA513.0 ppb
2018-05-03CA41163HAA513.0 ppb
2018-05-03CA41164HAA512.0 ppb
2018-05-03CA41165HAA54.70 ppb
2018-05-03CA41166HAA57.10 ppb
2018-05-03CA41167HAA57.80 ppb
2018-05-15CA48118HAA512.0 ppb
2018-08-02CB040201.60 ppb
2018-08-02CB0402110.00 ppb
2018-08-02CB040228.40 ppb
2018-08-02CB04023ND
2018-08-02CB040244.00 ppb
2018-08-02CB040257.90 ppb
2018-08-02CB040267.80 ppb
2018-08-06CB0584014.0 ppb
2018-11-01DBP 2005111337.10 ppb
2018-11-01DBP 2005111345.90 ppb
2018-11-01DBP 2005111354.20 ppb
2018-11-01DBP 200511136ND
2018-11-01DBP 2005111377.80 ppb
2018-11-01DBP 2005111386.60 ppb
2018-11-01DBP 2005111398.50 ppb
2018-11-05DBP 20051138910.7 ppb
2019-02-07DBP 2005210835.70 ppb
2019-02-07DBP 20052108411.1 ppb
2019-02-07DBP 2005210854.70 ppb
2019-02-07DBP 20052108610.8 ppb
2019-02-07DBP 2005210874.20 ppb
2019-02-07DBP 20052108812.4 ppb
2019-02-07DBP 2005210898.50 ppb
2019-02-11DBP 2005212568.60 ppb
2019-05-09DBP 2005315755.90 ppb
2019-05-09DBP 20053157611.1 ppb
2019-05-09DBP 20053157711.8 ppb
2019-05-09DBP 20053158213.0 ppb
2019-05-09DBP 2005315845.70 ppb
2019-05-09DBP 2005315867.00 ppb
2019-05-09DBP 2005315876.80 ppb
2019-05-13DBP 2005318377.00 ppb
2019-08-01DBP 2005427222.00 ppb
2019-08-01DBP 2005427237.90 ppb
2019-08-01DBP 2005427246.70 ppb
2019-08-01DBP 2005427250.600 ppb
2019-08-01DBP 2005427267.40 ppb
2019-08-01DBP 2005427276.60 ppb
2019-08-01DBP 2005427285.90 ppb
2019-08-13DBP 2005447589.10 ppb
2019-11-07DBP 2005558284.00 ppb
2019-11-07DBP 20055583011.1 ppb
2019-11-07DBP 20055583110.2 ppb
2019-11-07DBP 2005558323.40 ppb
2019-11-07DBP 20055583310.00 ppb
2019-11-07DBP 2005558346.80 ppb
2019-11-07DBP 2005558356.00 ppb
2019-11-18DBP 2005570048.50 ppb
2020-01-06DBP 2005616658.20 ppb
2020-02-06DBP 20056535712.2 ppb
2020-02-06DBP 20056535813.0 ppb
2020-02-06DBP 20056535912.1 ppb
2020-02-06DBP 20056536010.00 ppb
2020-02-06DBP 2005653616.90 ppb
2020-02-06DBP 2005653625.40 ppb
2020-02-07DBP 20056564012.8 ppb
2020-02-07DBP 20056564110.8 ppb
2020-05-07DBP 20057517112.6 ppb
2020-05-07DBP 2005751757.60 ppb
2020-05-07DBP 2005751766.40 ppb
2020-05-07DBP 20057517711.1 ppb
2020-05-07DBP 20057517312.4 ppb
2020-05-08DBP 20057517412.2 ppb
2020-05-08DBP 20057517212.1 ppb
2020-05-08DBP 20057517015.9 ppb
2020-08-06DBP 2005857440.700 ppb
2020-08-06DBP 20058575010.7 ppb
2020-08-06DBP 2005857538.80 ppb
2020-08-06DBP 2005857549.10 ppb
2020-08-07DBP 200585755ND
2020-08-07DBP 2005857566.50 ppb
2020-08-07DBP 2005857577.30 ppb
2020-08-07DBP 20058575810.4 ppb
2020-11-05DBP 2005973563.00 ppb
2020-11-05DBP 2005973575.10 ppb
2020-11-05DBP 2005973584.50 ppb
2020-11-05DBP 2005973592.10 ppb
2020-11-05DBP 2005973601.90 ppb
2020-11-05DBP 2005973613.60 ppb
2020-11-12DBP 2005982065.40 ppb
2020-11-12DBP 2005982105.00 ppb
2021-02-11DBP 2006068955.10 ppb
2021-02-11DBP 2006068968.40 ppb
2021-02-11DBP 2006069074.00 ppb
2021-02-12DBP 2006069117.60 ppb
2021-02-16DBP 20060691211.2 ppb
2021-02-17DBP 20060711210.5 ppb
2021-02-22DBP 2006074596.30 ppb
2021-02-23DBP 20060764511.2 ppb
2021-05-13DBP 20061723911.5 ppb
2021-05-14DBP 20061723611.8 ppb
2021-05-14DBP 2006172377.50 ppb
2021-05-14DBP 2006172386.30 ppb
2021-05-20DBP 20061831613.3 ppb
2021-05-20DBP 2006183177.90 ppb
2021-05-20DBP 20061831911.8 ppb
2021-05-20DBP 20061832112.9 ppb
2021-08-12DBP 20062875621.0 ppb
2021-08-12DBP 20062875713.5 ppb
2021-08-12DBP 200628758ND
2021-08-12DBP 20062875914.6 ppb
2021-08-12DBP 20062876017.4 ppb
2021-08-12DBP 20062876115.9 ppb
2021-08-25DBP 2006298155.60 ppb
2021-08-25DBP 20062981620.0 ppb
2021-11-04D300098348 30009835615.0 ppb
2021-11-04D300098349 3000983588.40 ppb
2021-11-04D300098350 300098360ND
2021-11-04D300098351 3000983627.40 ppb
2021-11-04D300098352 3000983649.80 ppb
2021-11-05D300098353 30009836612.3 ppb
2021-11-05D300098354 3000983689.90 ppb
2021-11-05D300098355 30009837013.3 ppb
2022-02-03CK2975215.0 ppb
2022-02-03CK297537.80 ppb
2022-02-03CK2975417.0 ppb
2022-02-03CK297559.30 ppb
2022-02-03CK2975615.0 ppb
2022-02-03CK2975715.0 ppb
2022-02-03CK2975819.0 ppb
2022-02-04CK3148923.0 ppb
2022-05-12CL3151314.0 ppb
2022-05-12CL3151421.0 ppb
2022-05-12CL3151510.00 ppb
2022-05-12CL3151618.0 ppb
2022-05-12CL3151711.0 ppb
2022-05-13CL3151814.0 ppb
2022-05-13CL3151915.0 ppb
2022-05-13CL3152016.0 ppb
2022-08-04CL989631.50 ppb
2022-08-04CL9896414.0 ppb
2022-08-04CL98965ND
2022-08-05CL9896616.0 ppb
2022-08-05CL98967ND
2022-08-05CL9896815.0 ppb
2022-08-05CL9896916.0 ppb
2022-08-05CL9897012.0 ppb
2022-11-17CM902835.90 ppb
2022-11-17CM902844.60 ppb
2022-11-17CM902856.80 ppb
2022-11-17CM902866.10 ppb
2022-11-17CM902876.40 ppb
2022-11-17CM902884.60 ppb
2022-11-17CM902895.70 ppb
2022-11-18CM902904.10 ppb
2023-02-02CN370776.90 ppb
2023-02-02CN3707815.0 ppb
2023-02-02CN3707913.0 ppb
2023-02-02CN370806.60 ppb
2023-02-02CN3708113.0 ppb
2023-02-02CN3708211.0 ppb
2023-02-02CN3708312.0 ppb
2023-02-02CN3708410.00 ppb
2023-05-12CO0629413.0 ppb
2023-05-12CO0629519.0 ppb
2023-05-12CO0629615.0 ppb
2023-05-12CO0629721.0 ppb
2023-05-12CO0629821.0 ppb
2023-05-12CO0629923.0 ppb
2023-05-18CO0938612.0 ppb
2023-05-18CO0938724.0 ppb
2023-08-10CO7337614.0 ppb
2023-08-10CO733772.30 ppb
2023-08-10CO733781.40 ppb
2023-08-11CO7337914.0 ppb
2023-08-11CO7338017.0 ppb
2023-08-11CO7338117.0 ppb
2023-08-11CO7338214.0 ppb
2023-08-11CO733838.50 ppb
2023-11-16CP504498.70 ppb
2023-11-16CP5045011.0 ppb
2023-11-16CP504516.90 ppb
2023-11-16CP504528.30 ppb
2023-11-16CP504536.70 ppb
2023-11-16CP5045410.00 ppb
2023-11-16CP504555.70 ppb
2023-11-17CP5045611.0 ppb