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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

MS0110011 , Entergy Operations, Inc

11 samples have been analysed for Arsenic at Entergy Operations, 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 11 samples, newest first — collected January 26, 2004 to March 11, 2025.

10 Arsenic results from the 10 samples listed here: 10 detected, 0 not detected. Those samples also carried 101 results for other analytes, which are on the full results page.

Arsenic results for Entergy Operations, Inc, from 1 to 10 of 11 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
Mar 11, 2025 11:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-250312-052
Laboratory
MSDH Lab
0.0008 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
May 16, 2022 13:55
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-220517-013
Laboratory
MSDH Lab
0.0008 mg/l , sample collected May 16, 2022 13:55, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Apr 6, 2020 14:20
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
200407-017IN
Laboratory
MSDH Lab
0.0012 mg/l , sample collected Apr 6, 2020 14:20, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2020 – Dec 31, 2022
Collected
Sep 24, 2018 13:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
180925-014IN
Laboratory
MSDH Lab
0.0007 mg/l , sample collected Sep 24, 2018 13:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Apr 21, 2014 03:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
140422-047IN
Laboratory
MSDH Lab
0.001 mg/l , sample collected Apr 21, 2014 03:30, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2014 – Dec 31, 2016
Collected
Nov 30, 2011 01:50
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
111201-026IN
Laboratory
MSDH Lab
0.0006 mg/l , sample collected Nov 30, 2011 01:50, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Mar 24, 2008
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
080325-009IN
Laboratory
MSDH Lab
0.00075 mg/l , sample collected Mar 24, 2008, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Jan 23, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060124-032IN
Laboratory
MSDH Lab
0.000906 mg/l , sample collected Jan 23, 2006, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Feb 14, 2005
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
050215-021IN
Laboratory
MSDH Lab
0.000659 mg/l , sample collected Feb 14, 2005, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Jan 26, 2004
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
040127-107IN
Laboratory
MSDH Lab
0.001 mg/l , sample collected Jan 26, 2004, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2002 – Dec 31, 2004

Routine (10).