1,2,4-Trichlorobenzene
Harford County Department of Public Works
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 7 | 0 | ND |
2015 | ND | 6 | 0 | ND |
2016 | ND | 6 | 0 | ND |
2017 | ND | 5 | 0 | ND |
2018 | ND | 10 | 0 | ND |
2019 | ND | 12 | 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 |
---|---|---|
2014-01-17 | 0120016_01_L4901 | ND |
2014-04-14 | 0120016_02_L5015 | ND |
2014-04-14 | 0120016_03_L5015 | ND |
2014-04-29 | 0120016_01_L5028 | ND |
2014-07-11 | 0120016_01_L5153 | ND |
2014-10-31 | 0120016_01_20376 | ND |
2014-12-11 | 0120016_01_20446 | ND |
2015-02-13 | 0120016_01_20547 | ND |
2015-04-06 | 2063480001B | ND |
2015-04-06 | 2063479001B | ND |
2015-04-10 | 2064511001B | ND |
2015-07-10 | L5701346-6 | ND |
2015-10-12 | L5859932-7 | ND |
2016-01-08 | L6009600-7 | ND |
2016-04-04 | L6167674-1 | ND |
2016-04-04 | L6167673-1 | ND |
2016-04-15 | L6183269-7 | ND |
2016-07-15 | L6314547-8 | ND |
2016-10-07 | L6467188_8_A | ND |
2017-01-06 | L6598139-7 | ND |
2017-04-05 | L6756571-1 | ND |
2017-04-05 | L6756568-1 | ND |
2017-04-07 | L6720051-7 | ND |
2017-10-06 | 2267469001 | ND |
2018-02-12 | 2295319001 | ND |
2018-03-27 | E18003487001 | ND |
2018-05-07 | 8051044-01 | ND |
2018-05-07 | 8051042-01 | ND |
2018-05-07 | 8051038-01 | ND |
2018-06-04 | E18004364001 | ND |
2018-09-13 | E19000940001 | ND |
2018-11-01 | E19001523001 | ND |
2018-11-05 | E19001555004 | ND |
2018-11-05 | E19001555001 | ND |
2019-02-05 | 9020934-01 | ND |
2019-03-25 | E19003076004 | ND |
2019-05-07 | 9050963-01 | ND |
2019-05-14 | 9050790-01 | ND |
2019-05-14 | 9050787-01 | ND |
2019-06-26 | E19004492002 | ND |
2019-07-16 | 9074764-05 | ND |
2019-07-31 | E20000447009 | ND |
2019-07-31 | E20000447007 | ND |
2019-11-12 | E20001849004 | ND |
2019-11-25 | E20001990001 | ND |
2019-12-03 | 9110887-01 | ND |