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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.

Arsenic results

MS0760076 , Black Bayou Water Assn.

112 samples have been analysed for Arsenic at Black Bayou Water Assn..

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 Arsenic result

The table below lists 1–10 of 112 samples, newest first — collected February 13, 2024 to June 12, 2026.

10 Arsenic results from the 10 samples listed here: 5 detected, 5 not detected. Those samples also carried 94 results for other analytes, which are on the full results page.

Units in this table

Arsenic is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Arsenic results for Black Bayou Water Assn., from 1 to 10 of 112 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
Jun 12, 2026
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
35045454002
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 12, 2026, sampling point TF101 Arsenic 1005 EPA method 200.8 Not recorded
Collected
Jun 12, 2026
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
35045454001
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 12, 2026, sampling point TF102 Arsenic 1005 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
Collected
Oct 7, 2025 14:40
Sampling point
TF115 Treatment Plant T103
Sample type
Routine
Lab sample
IN-251008-001
Laboratory
MSDH Lab
0.002 mg/l , sample collected Oct 7, 2025 14:40, sampling point TF115 Arsenic 1005 EPA method 200.8 Oct 1, 2025 – Dec 31, 2025
Collected
Jul 8, 2025 12:20
Sampling point
TF115 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250709-006
Laboratory
MSDH Lab
0.0021 mg/l , sample collected Jul 8, 2025 12:20, sampling point TF115 Arsenic 1005 EPA method 200.8 Jul 1, 2025 – Sep 30, 2025
Collected
Apr 9, 2025 14:10
Sampling point
TF115 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250410-021
Laboratory
MSDH Lab
0.0048 mg/l , sample collected Apr 9, 2025 14:10, sampling point TF115 Arsenic 1005 EPA method 200.8 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 1, 2025 16:40
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
IN-250402-003
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 16:40, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Apr 1, 2025 16:20
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250402-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 1, 2025 16:20, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Apr 1, 2025 16:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250402-001
Laboratory
MSDH Lab
0.00454 mg/l , sample collected Apr 1, 2025 16:05, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 14, 2025 13:15
Sampling point
TF115 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250115-036
Laboratory
MSDH Lab
0.0024 mg/l , sample collected Jan 14, 2025 13:15, sampling point TF115 Arsenic 1005 EPA method 200.8 Jan 1, 2025 – Mar 31, 2025
Collected
Feb 13, 2024 13:10
Sampling point
TF109 Treatment Plant T109
Sample type
Routine
Lab sample
IN-240214-024
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2024 13:10, sampling point TF109 Arsenic 1005 EPA method 200.8 Jan 1, 2024 – Dec 31, 2024

Routine (10).