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
MS0230075 , Silver Slipper Casino & Hotel
13 of the 49 analytes this system has been tested for have been detected at least once, across 144 samples on record.
The other 36 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 144 samples on record, detections range from March 20, 2020 to July 7, 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 | 90 of 90 results | Mar 20, 2020 | Aug 26, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 13 of 13 results | Nov 8, 2022 | Jul 7, 2026 |
| TTHM 2950 | Organic Chemical | 12 of 14 results | Dec 7, 2022 | Jul 7, 2026 |
| Lead 1030 | Inorganic Chemical | 11 of 90 results | Mar 26, 2020 | Aug 26, 2025 |
| Barium 1010 | Inorganic Chemical | 5 of 5 results | Dec 20, 2022 | Apr 15, 2025 |
| Fluoride 1025 | Inorganic Chemical | 5 of 5 results | Dec 20, 2022 | Apr 15, 2025 |
| Chromium 1020 | Inorganic Chemical | 3 of 5 results | May 30, 2023 | Apr 15, 2025 |
| Cyanide 1024 | Inorganic Chemical | 2 of 8 results | Jul 11, 2023 | Apr 23, 2024 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 1 result | Jul 7, 2026 | Jul 7, 2026 |
| Chloroform 2941 | Organic Chemical | 1 of 1 result | Jul 7, 2026 | Jul 7, 2026 |
| Arsenic 1005 | Inorganic Chemical | 1 of 5 results | Apr 15, 2025 | Apr 15, 2025 |
| Nickel 1036 | Inorganic Chemical | 1 of 5 results | Apr 15, 2025 | Apr 15, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 1 of 8 results | Oct 31, 2022 | Oct 31, 2022 |
Showing samples collected between September 26, 2024 and September 26, 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 table below lists 21–23 of 23 samples, newest first — collected October 15, 2024 to January 14, 2025. The summary above covers all 23.
3 results from the 3 samples listed here: 3 detected, 0 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 |
|---|---|---|
|
||
| 7.45 ug/l , sample collected Jan 14, 2025 13:30, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2025 – Mar 31, 2025 |
|
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| 3.92 ug/l , sample collected Jan 14, 2025 13:30, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2025 – Mar 31, 2025 |
|
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| 4.62 ug/l , sample collected Oct 15, 2024 12:15, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
-
- Collected
- Jan 14, 2025 13:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- HA-250115-003
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Mar 31, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 7.45 ug/l
-
- Collected
- Jan 14, 2025 13:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-250115-003
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Mar 31, 2025
-
TTHM 2950 EPA method 524.2
- Result
- 3.92 ug/l
-
- Collected
- Oct 15, 2024 12:15
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-241016-005
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
TTHM 2950 EPA method 524.2
- Result
- 4.62 ug/l
Routine (3).