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.
Chemical and radiological sample results
MS0110011 , Entergy Operations, Inc
22 of the 53 analytes this system has been tested for have been detected at least once, across 237 samples on record.
The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.
Across all 237 samples on record, detections range from July 7, 1993 to January 28, 2026. These figures cover the whole record.
What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.
What has been detected, ever
Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 153 of 154 results | Jul 7, 1993 | Jul 6, 2022 |
| Lead 1030 | Inorganic Chemical | 89 of 154 results | Jul 7, 1993 | Jul 10, 2019 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 23 of 23 results | May 3, 2004 | Jan 28, 2026 |
| Nitrate 1040 | Inorganic Chemical | 23 of 23 results | May 3, 2004 | Jan 28, 2026 |
| TTHM 2950 | Organic Chemical | 12 of 13 results | May 10, 2004 | Dec 15, 2025 |
| Barium 1010 | Inorganic Chemical | 11 of 11 results | Mar 12, 2002 | Mar 11, 2025 |
| Chromium 1020 | Inorganic Chemical | 11 of 11 results | Mar 12, 2002 | Mar 11, 2025 |
| Fluoride 1025 | Inorganic Chemical | 11 of 11 results | Mar 12, 2002 | Mar 11, 2025 |
| Arsenic 1005 | Inorganic Chemical | 10 of 11 results | Jan 26, 2004 | Mar 11, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 9 of 12 results | Jun 4, 2007 | Mar 13, 2025 |
| Nickel 1036 | Inorganic Chemical | 9 of 11 results | Mar 12, 2002 | Mar 11, 2025 |
| Chloroform 2941 | Organic Chemical | 6 of 7 results | Sep 13, 2006 | Dec 15, 2025 |
| Bromoform 2942 | Organic Chemical | 6 of 7 results | Sep 13, 2006 | Dec 15, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 6 of 7 results | Sep 13, 2006 | Dec 15, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 6 of 7 results | Sep 13, 2006 | Dec 15, 2025 |
| Selenium 1045 | Inorganic Chemical | 5 of 11 results | Jan 26, 2004 | Apr 21, 2014 |
| Dichloroacetic Acid 2451 | Organic Chemical | 3 of 5 results | Jul 12, 2012 | Aug 18, 2014 |
| Dibromoacetic Acid 2454 | Organic Chemical | 3 of 5 results | Jul 12, 2012 | Aug 18, 2014 |
| Sulfate 1055 | Inorganic Chemical | 2 of 2 results | Mar 12, 2002 | Jan 26, 2004 |
| Sodium 1052 | Inorganic Chemical | 1 of 1 result | Feb 3, 2021 | Feb 3, 2021 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 5 results | Jul 16, 2018 | Jul 16, 2018 |
| Uranium-238 4009 | Radionuclide | 1 of 1 result | Jan 23, 2006 | Jan 23, 2006 |
No date range is applied: this list draws on every sample on record. Show the last two years only.
The most recent samples, result by result
The table below lists 121–130 of 237 samples, newest first — collected February 14, 2005 to May 9, 2007. The summary above covers all 237.
41 results from the 10 samples listed here: 24 detected, 17 not detected. Across the whole record it is 401 of 842. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 1.32 mg/l , sample collected May 9, 2007, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| 1.32 mg/l , sample collected May 9, 2007, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 9, 2007, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| 1.43 ug/l , sample collected Sep 13, 2006, sampling point MRT000 | Chloroform 2941 EPA method 551.1 | Not recorded |
| 2.62 ug/l , sample collected Sep 13, 2006, sampling point MRT000 | Bromoform 2942 EPA method 551.1 | Not recorded |
| 2.55 ug/l , sample collected Sep 13, 2006, sampling point MRT000 | Bromodichloromethane 2943 EPA method 551.1 | Not recorded |
| 3.72 ug/l , sample collected Sep 13, 2006, sampling point MRT000 | Dibromochloromethane 2944 EPA method 551.1 | Not recorded |
| 10.32 ug/l , sample collected Sep 13, 2006, sampling point MRT000 | TTHM 2950 EPA method 551.1 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| 1.64 mg/l , sample collected Jun 7, 2006, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| 1.64 mg/l , sample collected Jun 7, 2006, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 7, 2006, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.000906 mg/l , sample collected Jan 23, 2006, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.000723 mg/l , sample collected Jan 23, 2006, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.007746 mg/l , sample collected Jan 23, 2006, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.352158 mg/l , sample collected Jan 23, 2006, sampling point TF080 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| 0.002201 mg/l , sample collected Jan 23, 2006, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 23, 2006, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.000684 mg/l , sample collected Jan 23, 2006, sampling point TF080 | Uranium-238 4009 | Not recorded |
|
||
| Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 26, 2005, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2005 – Dec 31, 2005 |
|
||
| 22.6 ug/l , sample collected Oct 26, 2005, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2005 – Dec 31, 2005 |
|
||
| 1.49 mg/l , sample collected Jul 20, 2005, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2005 – Dec 31, 2005 |
| 1.49 mg/l , sample collected Jul 20, 2005, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2005 – Dec 31, 2005 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 20, 2005, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2005 – Dec 31, 2005 |
|
||
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Feb 14, 2005, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.000659 mg/l , sample collected Feb 14, 2005, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.008927 mg/l , sample collected Feb 14, 2005, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Feb 14, 2005, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.008254 mg/l , sample collected Feb 14, 2005, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.392289 mg/l , sample collected Feb 14, 2005, sampling point TF080 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Feb 14, 2005, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.002041 mg/l , sample collected Feb 14, 2005, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| 0.00272 mg/l , sample collected Feb 14, 2005, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2005, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Feb 14, 2005, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 14, 2005, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
-
- Collected
- May 9, 2007
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 070510-053NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- 1.32 mg/l
-
Nitrate 1040 EPA method 353.2
- Result
- 1.32 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Sep 13, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060914-006TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 551.1
- Result
- 1.43 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 551.1
- Result
- 2.62 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 551.1
- Result
- 2.55 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 551.1
- Result
- 3.72 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 551.1
- Result
- 10.32 ug/l
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
- Collected
- Jun 7, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060608-073NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- 1.64 mg/l
-
Nitrate 1040 EPA method 353.2
- Result
- 1.64 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jan 23, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060124-002CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
- Collected
- Jan 23, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060124-032IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.000906 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Barium 1010 EPA method 200.8
- Result
- 0.000723 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Chromium 1020 EPA method 200.8
- Result
- 0.007746 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.352158 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- 0.002201 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Uranium-238 4009
- Result
- 0.000684 mg/l
- Monitoring period
- Not recorded
-
- Collected
- Oct 26, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 051027-018HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2005
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 0.01 mg/l Minimum Reporting Level
-
- Collected
- Oct 26, 2005
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 051027-018TH
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2005
-
TTHM 2950 EPA method 524.2
- Result
- 22.6 ug/l
-
- Collected
- Jul 20, 2005
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 050721-057NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2005
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- 1.49 mg/l
-
Nitrate 1040 EPA method 353.2
- Result
- 1.49 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Feb 14, 2005
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 050215-004CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
-
- Collected
- Feb 14, 2005
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 050215-021IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.000659 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Barium 1010 EPA method 200.8
- Result
- 0.008927 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Chromium 1020 EPA method 200.8
- Result
- 0.008254 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Fluoride 1025 EPA method 380-75WE
- Result
- 0.392289 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Nickel 1036 EPA method 200.8
- Result
- 0.002041 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- 0.00272 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
Routine (10).