1,2,4-Trichlorobenzene
Collegeville Trappe Joint Public Works 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 |
|---|---|---|---|---|
| 2018 | ND | 28 | 0 | ND |
| 2019 | ND | 28 | 0 | ND |
| 2020 | ND | 40 | 0 | ND |
| 2021 | ND | 40 | 0 | ND |
| 2022 | ND | 40 | 0 | ND |
| 2023 | ND | 39 | 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 |
|---|---|---|
| 2018-01-22 | 20180311 | ND |
| 2018-01-22 | 20180312 | ND |
| 2018-01-22 | 20180313 | ND |
| 2018-01-22 | 20180314 | ND |
| 2018-01-22 | 20180315 | ND |
| 2018-01-22 | 20180316 | ND |
| 2018-01-22 | 20180317 | ND |
| 2018-04-18 | 20181575 | ND |
| 2018-04-18 | 20181576 | ND |
| 2018-04-18 | 20181577 | ND |
| 2018-04-18 | 20181578 | ND |
| 2018-04-18 | 20181579 | ND |
| 2018-04-18 | 20181580 | ND |
| 2018-04-18 | 20181581 | ND |
| 2018-07-16 | 20182718 | ND |
| 2018-07-16 | 20182719 | ND |
| 2018-07-16 | 20182720 | ND |
| 2018-07-16 | 20182721 | ND |
| 2018-07-16 | 20182722 | ND |
| 2018-07-16 | 20182723 | ND |
| 2018-07-16 | 20182724 | ND |
| 2018-10-15 | 20183946 | ND |
| 2018-10-15 | 20183947 | ND |
| 2018-10-15 | 20183948 | ND |
| 2018-10-15 | 20183949 | ND |
| 2018-10-15 | 20183950 | ND |
| 2018-10-15 | 20183951 | ND |
| 2018-10-15 | 20183952 | ND |
| 2019-01-23 | 20190306 | ND |
| 2019-01-23 | 20190307 | ND |
| 2019-01-23 | 20190308 | ND |
| 2019-01-23 | 20190309 | ND |
| 2019-01-23 | 20190310 | ND |
| 2019-01-23 | 20190311 | ND |
| 2019-01-23 | 20190312 | ND |
| 2019-04-15 | 20191439 | ND |
| 2019-04-15 | 20191440 | ND |
| 2019-04-15 | 20191441 | ND |
| 2019-04-15 | 20191442 | ND |
| 2019-04-15 | 20191443 | ND |
| 2019-04-15 | 20191444 | ND |
| 2019-04-15 | 20191445 | ND |
| 2019-07-15 | 20192706 | ND |
| 2019-07-15 | 20192707 | ND |
| 2019-07-15 | 20192708 | ND |
| 2019-07-15 | 20192709 | ND |
| 2019-07-15 | 20192710 | ND |
| 2019-07-15 | 20192711 | ND |
| 2019-07-15 | 20192712 | ND |
| 2019-10-21 | 20194150 | ND |
| 2019-10-21 | 20194151 | ND |
| 2019-10-21 | 20194152 | ND |
| 2019-10-21 | 20194153 | ND |
| 2019-10-21 | 20194154 | ND |
| 2019-10-21 | 20194155 | ND |
| 2019-10-21 | 20194156 | ND |
| 2020-01-20 | 21500891.00 | ND |
| 2020-01-20 | 21500912.00 | ND |
| 2020-01-20 | 21500933.00 | ND |
| 2020-01-20 | 21500954.00 | ND |
| 2020-01-20 | 21500975.00 | ND |
| 2020-01-20 | 21500996.00 | ND |
| 2020-03-02 | 21845013.00 | ND |
| 2020-03-02 | 21845034.00 | ND |
| 2020-03-02 | 21845055.00 | ND |
| 2020-03-02 | 21845076.00 | ND |
| 2020-05-18 | 22213314.00 | ND |
| 2020-05-18 | 22213335.00 | ND |
| 2020-05-18 | 22213356.00 | ND |
| 2020-05-18 | 22213377.00 | ND |
| 2020-05-18 | 22213398.00 | ND |
| 2020-05-18 | 22213419.00 | ND |
| 2020-05-18 | 22213440.00 | ND |
| 2020-06-08 | 22414004.00 | ND |
| 2020-06-08 | 22414025.00 | ND |
| 2020-06-08 | 22414046.00 | ND |
| 2020-08-03 | 22605624.00 | ND |
| 2020-08-03 | 22605645.00 | ND |
| 2020-08-03 | 22605666.00 | ND |
| 2020-08-03 | 22605687.00 | ND |
| 2020-08-03 | 22605708.00 | ND |
| 2020-08-17 | 22797375.00 | ND |
| 2020-08-17 | 22797396.00 | ND |
| 2020-08-17 | 22797417.00 | ND |
| 2020-08-17 | 22797438.00 | ND |
| 2020-08-17 | 22797459.00 | ND |
| 2020-10-19 | 23180744.00 | ND |
| 2020-10-19 | 23180765.00 | ND |
| 2020-10-19 | 23180786.00 | ND |
| 2020-10-19 | 23180807.00 | ND |
| 2020-10-19 | 23180828.00 | ND |
| 2020-10-19 | 23180849.00 | ND |
| 2020-11-02 | 23360564.00 | ND |
| 2020-11-02 | 23360585.00 | ND |
| 2020-11-02 | 23360606.00 | ND |
| 2020-11-02 | 23360627.00 | ND |
| 2021-01-18 | 23711035.00 | ND |
| 2021-01-18 | 23711056.00 | ND |
| 2021-01-18 | 23711077.00 | ND |
| 2021-01-18 | 23711098.00 | ND |
| 2021-01-18 | 23711119.00 | ND |
| 2021-02-03 | 23887115.00 | ND |
| 2021-02-03 | 23887136.00 | ND |
| 2021-02-03 | 23887157.00 | ND |
| 2021-02-03 | 23887178.00 | ND |
| 2021-03-22 | 24058522.00 | ND |
| 2021-04-19 | 24246018.00 | ND |
| 2021-04-19 | 24246039.00 | ND |
| 2021-04-19 | 24246060.00 | ND |
| 2021-04-19 | 24246081.00 | ND |
| 2021-04-19 | 24246102.00 | ND |
| 2021-04-19 | 24246123.00 | ND |
| 2021-05-17 | 24436777.00 | ND |
| 2021-05-17 | 24436798.00 | ND |
| 2021-05-17 | 24436819.00 | ND |
| 2021-05-17 | 24436840.00 | ND |
| 2021-08-02 | 24827166.00 | ND |
| 2021-08-02 | 24827187.00 | ND |
| 2021-08-02 | 24827208.00 | ND |
| 2021-08-02 | 24827229.00 | ND |
| 2021-08-16 | 25021282.00 | ND |
| 2021-08-16 | 25021303.00 | ND |
| 2021-08-16 | 25021324.00 | ND |
| 2021-08-16 | 25021345.00 | ND |
| 2021-08-16 | 25021366.00 | ND |
| 2021-08-16 | 25021387.00 | ND |
| 2021-10-18 | 25402979.00 | ND |
| 2021-10-18 | 25403000.00 | ND |
| 2021-10-18 | 25403021.00 | ND |
| 2021-10-18 | 25403042.00 | ND |
| 2021-10-18 | 25403063.00 | ND |
| 2021-10-18 | 25403084.00 | ND |
| 2021-11-01 | 25586575.00 | ND |
| 2021-11-01 | 25586596.00 | ND |
| 2021-11-01 | 25586617.00 | ND |
| 2021-11-01 | 25586638.00 | ND |
| 2022-01-17 | 25940997.00 | ND |
| 2022-01-17 | 25941018.00 | ND |
| 2022-01-17 | 25941039.00 | ND |
| 2022-01-17 | 25941060.00 | ND |
| 2022-01-17 | 25941081.00 | ND |
| 2022-01-17 | 25941102.00 | ND |
| 2022-02-07 | 26116009.00 | ND |
| 2022-02-07 | 26116030.00 | ND |
| 2022-02-07 | 26116051.00 | ND |
| 2022-02-07 | 26116072.00 | ND |
| 2022-04-18 | 26462313.00 | ND |
| 2022-04-18 | 26462334.00 | ND |
| 2022-04-18 | 26462355.00 | ND |
| 2022-04-18 | 26462376.00 | ND |
| 2022-04-18 | 26462397.00 | ND |
| 2022-04-18 | 26462418.00 | ND |
| 2022-05-02 | 26646902.00 | ND |
| 2022-05-02 | 26646923.00 | ND |
| 2022-05-02 | 26646944.00 | ND |
| 2022-05-02 | 26646965.00 | ND |
| 2022-07-18 | 27035690.00 | ND |
| 2022-07-18 | 27035711.00 | ND |
| 2022-07-18 | 27035732.00 | ND |
| 2022-07-18 | 27035753.00 | ND |
| 2022-07-18 | 27035774.00 | ND |
| 2022-07-18 | 27035795.00 | ND |
| 2022-08-01 | 27232414.00 | ND |
| 2022-08-01 | 27232435.00 | ND |
| 2022-08-01 | 27232456.00 | ND |
| 2022-08-01 | 27232477.00 | ND |
| 2022-10-17 | 27639848.00 | ND |
| 2022-10-17 | 27639869.00 | ND |
| 2022-10-17 | 27639890.00 | ND |
| 2022-10-17 | 27639911.00 | ND |
| 2022-10-17 | 27639932.00 | ND |
| 2022-10-17 | 27639953.00 | ND |
| 2022-11-07 | 27821386.00 | ND |
| 2022-11-07 | 27821407.00 | ND |
| 2022-11-07 | 27821428.00 | ND |
| 2022-11-07 | 27821449.00 | ND |
| 2023-01-23 | 28171106.00 | ND |
| 2023-01-23 | 28171127.00 | ND |
| 2023-01-23 | 28171148.00 | ND |
| 2023-01-23 | 28171169.00 | ND |
| 2023-02-06 | 28348071.00 | ND |
| 2023-02-06 | 28348092.00 | ND |
| 2023-02-06 | 28348113.00 | ND |
| 2023-02-06 | 28348134.00 | ND |
| 2023-02-06 | 28348155.00 | ND |
| 2023-02-06 | 28348176.00 | ND |
| 2023-04-17 | 28700391.00 | ND |
| 2023-04-17 | 28700412.00 | ND |
| 2023-04-17 | 28700433.00 | ND |
| 2023-04-17 | 28700454.00 | ND |
| 2023-04-17 | 28700475.00 | ND |
| 2023-04-17 | 28700496.00 | ND |
| 2023-05-22 | 28899001.00 | ND |
| 2023-05-22 | 28899002.00 | ND |
| 2023-05-22 | 28899003.00 | ND |
| 2023-05-22 | 28899004.00 | ND |
| 2023-07-24 | 29300390.00 | ND |
| 2023-07-24 | 29300411.00 | ND |
| 2023-07-24 | 29300432.00 | ND |
| 2023-07-24 | 29300453.00 | ND |
| 2023-07-24 | 29300474.00 | ND |
| 2023-07-24 | 29300495.00 | ND |
| 2023-08-07 | 29495517.00 | ND |
| 2023-08-07 | 29495538.00 | ND |
| 2023-08-07 | 29495559.00 | ND |
| 2023-08-07 | 29495580.00 | ND |
| 2023-10-16 | 29885085.00 | ND |
| 2023-10-16 | 29885106.00 | ND |
| 2023-10-16 | 29885127.00 | ND |
| 2023-10-16 | 29885148.00 | ND |
| 2023-10-16 | 29885169.00 | ND |
| 2023-10-16 | 29885190.00 | ND |
| 2023-11-06 | 30069943.00 | ND |
| 2023-11-06 | 30069964.00 | ND |
| 2023-11-06 | 30069985.00 | ND |