1,2,4-Trichlorobenzene
Seaford Water Department
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 |
|---|---|---|---|---|
| 2014 | ND | 7 | 0 | ND |
| 2015 | ND | 7 | 0 | ND |
| 2016 | ND | 9 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 8 | 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 |
|---|---|---|
| 2014-03-27 | S553865 | ND |
| 2014-06-12 | S554696 | ND |
| 2014-09-18 | S554742 | ND |
| 2014-09-30 | L5279641-13 | ND |
| 2014-12-22 | S612331 | ND |
| 2014-12-22 | S612329 | ND |
| 2014-12-30 | S590506 | ND |
| 2015-03-27 | S617132 | ND |
| 2015-06-29 | S621208 | ND |
| 2015-09-30 | S643545 | ND |
| 2015-11-10 | S643565 | ND |
| 2015-11-10 | S643564 | ND |
| 2015-12-21 | S654880 | ND |
| 2015-12-31 | S654833 | ND |
| 2016-03-24 | S676567 | ND |
| 2016-07-08 | S676775 | ND |
| 2016-07-15 | S677006 | ND |
| 2016-08-09 | S654296 | ND |
| 2016-08-09 | S677203 | ND |
| 2016-08-09 | S654297 | ND |
| 2016-08-10 | S677205 | ND |
| 2016-09-27 | S694848 | ND |
| 2016-12-29 | S693912 | ND |
| 2017-03-28 | S723994 | ND |
| 2017-06-28 | S738857 | ND |
| 2017-06-28 | S738843 | ND |
| 2017-09-27 | S760103 | ND |
| 2017-12-28 | S782009 | ND |
| 2018-03-23 | S792285 | ND |
| 2018-06-26 | S792405 | ND |
| 2018-06-27 | S792201 | ND |
| 2018-12-28 | S855885 | ND |
| 2019-03-26 | S872208 | ND |
| 2019-06-26 | S888187 | ND |
| 2019-08-21 | S848481 | ND |
| 2019-08-21 | S848480 | ND |
| 2019-09-23 | S909142 | ND |
| 2019-11-20 | S925220 | ND |
| 2019-11-20 | S927415 | ND |
| 2019-11-20 | S927379 | ND |