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; the list of samples further down is narrowed.
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 |
Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.
Choose a date range
The most recent samples, result by result
The 7 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.
24 results from the 7 samples listed here: 16 detected, 8 not detected. 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 |
|---|---|---|
|
||
| 1.25 mg/l , sample collected Jan 28, 2026 14:00, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2026 – Dec 31, 2026 |
| 1.25 mg/l , sample collected Jan 28, 2026 14:00, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2026 – Dec 31, 2026 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 28, 2026 14:00, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2026 – Dec 31, 2026 |
|
||
| 0.91 ug/l , sample collected Dec 15, 2025 09:00, sampling point DS000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 2.2 ug/l , sample collected Dec 15, 2025 09:00, sampling point DS000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.9 ug/l , sample collected Dec 15, 2025 09:00, sampling point DS000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 3.5 ug/l , sample collected Dec 15, 2025 09:00, sampling point DS000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 8.51 ug/l , sample collected Dec 15, 2025 09:00, sampling point DS000 | TTHM 2950 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 8, 2025 09:30, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
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| 9.68 ug/l , sample collected Mar 13, 2025 09:19, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2025 – Dec 31, 2025 |
|
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| 2.43 ug/l , sample collected Mar 13, 2025 09:19, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 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 |
| 0.154 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:30, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 0.0035 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 0.258 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 | Fluoride 1025 EPA method QC 10-109-12-2-A | Jan 1, 2023 – Dec 31, 2025 |
| 0.0035 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:30, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:30, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:30, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:30, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 1.37 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| 1.37 mg/l , sample collected Mar 11, 2025 11:30, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:30, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
-
- Collected
- Jan 28, 2026 14:00
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NI-260129-013
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2026 – Dec 31, 2026
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 1.25 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 1.25 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Dec 15, 2025 09:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 810-175534-1
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Chloroform 2941 EPA method 524.2
- Result
- 0.91 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 2.2 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 1.9 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 3.5 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 8.51 ug/l
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
- Collected
- Sep 8, 2025 09:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- IN-250909-020
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 13, 2025 09:19
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- HA-250313-011
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 9.68 ug/l
-
- Collected
- Mar 13, 2025 09:19
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-250313-011
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 2.43 ug/l
-
- Collected
- Mar 11, 2025 11:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- IN-250312-052
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- 0.0008 mg/l
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Barium 1010 EPA method 200.8
- Result
- 0.154 mg/l
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Chromium 1020 EPA method 200.8
- Result
- 0.0035 mg/l
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Fluoride 1025 EPA method QC 10-109-12-2-A
- Result
- 0.258 mg/l
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Nickel 1036 EPA method 200.8
- Result
- 0.0035 mg/l
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
- Collected
- Mar 11, 2025 11:30
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NI-250311-089
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 1.37 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 1.37 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
Routine (7).