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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

1,2,4-Trichlorobenzene results

MS0610012 , Langford Water Association

58 samples have been analysed for 1,2,4-Trichlorobenzene at Langford Water Association.

This is one analyte out of the system’s whole record. For what has ever been detected here, and when, see all chemical and radiological results; for everything the system is tested for, see the analyte list.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

No date range is applied: this list draws on every sample on record. Show the last two years only.

Every 1,2,4-Trichlorobenzene result

The table below lists 1–10 of 58 samples, newest first — collected August 9, 2016 to July 22, 2026.

10 1,2,4-Trichlorobenzene results from the 10 samples listed here: 0 detected, 10 not detected. Those samples also carried 202 results for other analytes, which are on the full results page.

1,2,4-Trichlorobenzene results for Langford Water Association, from 1 to 10 of 58 samples shown analysed for it, newest first. This view leaves out other analytes on the same samples. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jul 22, 2026
Sampling point
TF105
Sample type
Routine
Lab sample
35053069003
Laboratory
Pace Analytical Services, LLC
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 22, 2026, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2026 – Dec 31, 2028
Collected
Jul 22, 2026
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
35053069001
Laboratory
Pace Analytical Services, LLC
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 22, 2026, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Collected
Jan 29, 2025 10:15
Sampling point
TF105
Sample type
Routine
Lab sample
VO-250129-004
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 29, 2025 10:15, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2020 – Dec 31, 2025
Collected
Jan 28, 2025 10:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
VO-250129-003
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jan 28, 2025 10:40, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2020 – Dec 31, 2025
Collected
Sep 12, 2022 10:25
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
VO-220913-009
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2022 10:25, sampling point TF104 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Sep 12, 2022 10:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
VO-220913-008
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2022 10:05, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2017 – Dec 31, 2022
Collected
Jun 4, 2019 12:10
Sampling point
TF105
Sample type
Routine
Lab sample
190605-004VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2019 12:10, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2014 – Dec 31, 2019
Collected
Jun 4, 2019 11:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190605-003VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2019 11:40, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2014 – Dec 31, 2019
Collected
Aug 9, 2016 09:00
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
160810-028VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 9, 2016 09:00, sampling point TF104 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Aug 9, 2016 09:25
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
160810-027VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 9, 2016 09:25, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016

Routine (10).