1,2,4-Trichlorobenzene
City of Naples
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 |
|---|---|---|---|---|
| 2018 | ND | 5 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | ND | 9 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 6 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-03-15 | Q1810680005 | ND |
| 2018-03-15 | Q1810680007 | ND |
| 2018-03-15 | Q1810680009 | ND |
| 2018-03-15 | Q1810680012 | ND |
| 2018-03-15 | Q1810680003 | ND |
| 2019-08-15 | Q1955907002 | ND |
| 2019-08-15 | Q1955907004 | ND |
| 2019-08-15 | Q1955907006 | ND |
| 2020-02-19 | Q2006446001 | ND |
| 2020-02-19 | Q2006446003 | ND |
| 2020-05-11 | Q2018218001 | ND |
| 2020-05-11 | Q2018218003 | ND |
| 2020-05-11 | Q2018218005 | ND |
| 2020-05-11 | Q2018218007 | ND |
| 2020-09-21 | Q2037373001 | ND |
| 2020-12-03 | Q2048484003 | ND |
| 2020-12-03 | Q2048484001 | ND |
| 2021-07-28 | Q2119749011 | ND |
| 2021-07-28 | Q2119749013 | ND |
| 2021-07-28 | Q2119749015 | ND |
| 2021-07-28 | Q2119749017 | ND |
| 2021-07-28 | Q2119749019 | ND |
| 2021-10-05 | Q2127603001 | ND |
| 2022-02-08 | Q2204273002 | ND |
| 2022-06-14 | Q2216505001 | ND |
| 2022-06-14 | Q2216505003 | ND |
| 2022-11-15 | Q2234252003 | ND |
| 2023-03-06 | Q2308676001 | ND |
| 2023-06-15 | Q2322780003 | ND |
| 2023-06-15 | Q2322780011 | ND |
| 2023-06-15 | Q2322780013 | ND |
| 2023-09-18 | Q2339834001 | ND |
| 2023-12-07 | Q2352322001 | ND |