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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

MS0410035 , North Lee W/A #4-Macedonia

27 samples have been analysed for Arsenic at North Lee W/A #4-Macedonia.

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 27 samples, newest first — collected April 1, 2024 to December 9, 2025.

10 Arsenic results from the 10 samples listed here: 10 detected, 0 not detected. Those samples also carried 99 results for other analytes, which are on the full results page.

Arsenic results for North Lee W/A #4-Macedonia, from 1 to 10 of 27 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
Dec 9, 2025 10:10
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-251210-006
Laboratory
MSDH Lab
0.0013 mg/l , sample collected Dec 9, 2025 10:10, sampling point TF102 Arsenic 1005 EPA method 200.8 Oct 1, 2025 – Dec 31, 2025
Collected
Jul 9, 2025 09:25
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-250710-002
Laboratory
MSDH Lab
0.0012 mg/l , sample collected Jul 9, 2025 09:25, sampling point TF102 Arsenic 1005 EPA method 200.8 Jul 1, 2025 – Sep 30, 2025
Collected
Apr 8, 2025 10:30
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-250409-005
Laboratory
MSDH Lab
0.0021 mg/l , sample collected Apr 8, 2025 10:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Apr 1, 2025 – Jun 30, 2025
Collected
Jan 14, 2025 10:30
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-250115-052
Laboratory
MSDH Lab
0.0009 mg/l , sample collected Jan 14, 2025 10:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2025 – Mar 31, 2025
Collected
Oct 9, 2024 09:35
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-241010-001
Laboratory
MSDH Lab
0.0009 mg/l , sample collected Oct 9, 2024 09:35, sampling point TF102 Arsenic 1005 EPA method 200.8 Oct 1, 2024 – Dec 31, 2024
Collected
Apr 23, 2024 08:45
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-240424-001
Laboratory
MSDH Lab
0.0019 mg/l , sample collected Apr 23, 2024 08:45, sampling point TF102 Arsenic 1005 EPA method 200.8 Jul 1, 2024 – Sep 30, 2024
Collected
Apr 15, 2024 09:08
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-240416-001
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Apr 15, 2024 09:08, sampling point TF102 Arsenic 1005 EPA method 200.8 Apr 1, 2024 – Jun 30, 2024
Collected
Apr 1, 2024 12:18
Sampling point
ST001 100K Elevated at Macedonia
Sample type
Routine
Lab sample
IN-240402-002
Laboratory
MSDH Lab
0.0017 mg/l , sample collected Apr 1, 2024 12:18, sampling point ST001 Arsenic 1005 EPA method 200.8 Not recorded
Collected
Apr 1, 2024 11:55
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
IN-240402-001
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Apr 1, 2024 11:55, sampling point WL001 Arsenic 1005 EPA method 200.8 Not recorded
Collected
Apr 1, 2024 11:36
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
IN-240402-003
Laboratory
MSDH Lab
0.0016 mg/l , sample collected Apr 1, 2024 11:36, sampling point TF102 Arsenic 1005 EPA method 200.8 Apr 1, 2024 – Jun 30, 2024

Routine (10).