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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

MS0090001 , Atlanta Water System, Inc.

24 samples have been analysed for Arsenic at Atlanta Water System, Inc..

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 24 samples, newest first — collected April 16, 2014 to June 14, 2026.

10 Arsenic results from the 10 samples listed here: 8 detected, 2 not detected. Those samples also carried 98 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 Atlanta Water System, Inc., from 1 to 10 of 24 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 14, 2026
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
35044231002
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 14, 2026, sampling point TF103 Arsenic 1005 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
Collected
Jun 14, 2026
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
35044231001
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 14, 2026, sampling point TF101 Arsenic 1005 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
Collected
Jan 14, 2025 12:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250115-006
Laboratory
MSDH Lab
0.0054 mg/l , sample collected Jan 14, 2025 12:05, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jan 9, 2024 15:10
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
IN-240110-003
Laboratory
MSDH Lab
0.0014 mg/l , sample collected Jan 9, 2024 15:10, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
May 3, 2022 12:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-220504-025
Laboratory
MSDH Lab
0.0014 mg/l , sample collected May 3, 2022 12:10, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Apr 8, 2020 12:25
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
200409-022IN
Laboratory
MSDH Lab
0.002 mg/l , sample collected Apr 8, 2020 12:25, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Apr 8, 2020 12:15
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
200409-021IN
Laboratory
MSDH Lab
0.0015 mg/l , sample collected Apr 8, 2020 12:15, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Sep 17, 2018 01:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180918-018IN
Laboratory
MSDH Lab
0.0016 mg/l , sample collected Sep 17, 2018 01:10, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
May 15, 2017 01:00
Sampling point
TF103 Treatmnt Plant T103
Sample type
Routine
Lab sample
170516-007IN
Laboratory
MSDH Lab
0.0007 mg/l , sample collected May 15, 2017 01:00, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Apr 16, 2014 12:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
140417-079IN
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Apr 16, 2014 12:30, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016

Routine (10).