1,2,4-Trichlorobenzene
Connecticut Water Company - Northern Region-Western System
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 12 | 0 | ND |
| 2015 | ND | 7 | 0 | ND |
| 2016 | ND | 5 | 0 | ND |
| 2017 | ND | 6 | 0 | ND |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hormone disruption.
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-24 | BG03077VOC1 | ND |
| 2014-01-29 | BG04659VOC1 | ND |
| 2014-02-07 | BG08003VOC1 | ND |
| 2014-04-03 | BG27981VOC1 | ND |
| 2014-04-09 | 4561VOC1 | ND |
| 2014-05-21 | BG47680VOC1 | ND |
| 2014-06-04 | BG53346VOC1 | ND |
| 2014-06-06 | BG54002VOC1 | ND |
| 2014-06-17 | BG60666VOC1 | ND |
| 2014-06-19 | BG62968VOC1 | ND |
| 2014-07-11 | BG73249VOC1 | ND |
| 2014-11-21 | BH44966VOC1 | ND |
| 2015-01-20 | BH64902VOC1 | ND |
| 2015-03-06 | BH80296VOC1 | ND |
| 2015-04-29 | BJ09906VOC1 | ND |
| 2015-04-30 | BJ10443VOC1 | ND |
| 2015-07-01 | BJ40227VOC1 | ND |
| 2015-07-02 | BJ41078VOC1 | ND |
| 2015-07-30 | BJ65812VOC1 | ND |
| 2016-01-12 | BK51386VOC1 | ND |
| 2016-01-15 | BK53768VOC1 | ND |
| 2016-05-25 | BN40000VOC1 | ND |
| 2016-06-09 | BN51878VOC1 | ND |
| 2016-07-15 | BN73865VOC1 | ND |
| 2017-02-08 | BX57435VOC1 | ND |
| 2017-03-03 | BX79849VOC1 | ND |
| 2017-03-03 | BX79851VOC1 | ND |
| 2017-04-21 | BY07962VOC1 | ND |
| 2017-06-01 | BY32099VOC1 | ND |
| 2017-07-07 | BY54441VOC1 | ND |
| 2018-01-23 | BZ78888VOC1 | ND |
| 2018-01-31 | BZ82950VOC1 | ND |
| 2018-07-13 | CA89901 | ND |
| 2019-01-02 | VOC1 200517309 | ND |
| 2019-03-15 | VOC1 200524883 | ND |