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
MS0490010 , City of Winona
22 of the 59 analytes this system has been tested for have been detected at least once, across 280 samples on record.
The other 37 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 280 samples on record, detections range from October 8, 2003 to December 3, 2025. 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 | 182 of 184 results | Jun 17, 2004 | Aug 7, 2024 |
| Lead 1030 | Inorganic Chemical | 81 of 184 results | Jun 17, 2004 | Aug 7, 2024 |
| TTHM 2950 | Organic Chemical | 11 of 20 results | Jul 21, 2004 | Aug 14, 2025 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Oct 8, 2003 | Apr 7, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 8 of 20 results | Jun 16, 2010 | Aug 14, 2025 |
| Fluoride 1025 | Inorganic Chemical | 7 of 10 results | Oct 8, 2003 | Apr 7, 2025 |
| Chloroform 2941 | Organic Chemical | 6 of 14 results | Aug 12, 2013 | Aug 14, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 6 of 14 results | Aug 12, 2013 | Aug 14, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 6 of 14 results | Aug 12, 2013 | Aug 14, 2025 |
| Nickel 1036 | Inorganic Chemical | 5 of 10 results | Mar 10, 2004 | Apr 7, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 29, 2019 | Dec 3, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 3 of 15 results | Aug 12, 2013 | Aug 14, 2025 |
| Chromium 1020 | Inorganic Chemical | 3 of 10 results | Mar 7, 2016 | Apr 7, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 2 of 15 results | Aug 12, 2013 | Aug 14, 2025 |
| Gross Beta Particle Activity 4100 | Radionuclide | 2 of 2 results | Sep 25, 2009 | Mar 15, 2010 |
| Sulfate 1055 | Inorganic Chemical | 2 of 2 results | Oct 8, 2003 | Mar 10, 2004 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 15 results | Sep 22, 2020 | Sep 22, 2020 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 1 of 7 results | Mar 15, 2010 | Mar 15, 2010 |
| Radium-226 4020 | Radionuclide | 1 of 7 results | Mar 15, 2010 | Mar 15, 2010 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 1 of 2 results | Sep 25, 2009 | Sep 25, 2009 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 1 of 2 results | Sep 25, 2009 | Sep 25, 2009 |
| Mercury 1035 | Inorganic Chemical | 1 of 10 results | Apr 6, 2005 | Apr 6, 2005 |
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 91–100 of 280 samples, newest first — collected September 11, 2018 to September 12, 2018. The summary above covers all 280.
20 results from the 10 samples listed here: 19 detected, 1 not detected. Across the whole record it is 343 of 915. 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 |
|---|---|---|
|
||
| 0.1838 mg/l , sample collected Sep 12, 2018 06:04, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 12, 2018 06:04, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.1964 mg/l , sample collected Sep 12, 2018 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0006 mg/l , sample collected Sep 12, 2018 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.0921 mg/l , sample collected Sep 12, 2018 05:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.002 mg/l , sample collected Sep 12, 2018 05:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.1537 mg/l , sample collected Sep 12, 2018 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0011 mg/l , sample collected Sep 12, 2018 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.0232 mg/l , sample collected Sep 11, 2018 03:25, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0005 mg/l , sample collected Sep 11, 2018 03:25, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.0173 mg/l , sample collected Sep 11, 2018 18:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0044 mg/l , sample collected Sep 11, 2018 18:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.3984 mg/l , sample collected Sep 11, 2018 10:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0011 mg/l , sample collected Sep 11, 2018 10:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.3746 mg/l , sample collected Sep 11, 2018 09:34, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0011 mg/l , sample collected Sep 11, 2018 09:34, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.4933 mg/l , sample collected Sep 11, 2018 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0237 mg/l , sample collected Sep 11, 2018 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
|
||
| 0.2819 mg/l , sample collected Sep 11, 2018 06:05, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Not recorded |
| 0.0007 mg/l , sample collected Sep 11, 2018 06:05, sampling point DS000 | Lead 1030 EPA method 200.8 | Not recorded |
-
- Collected
- Sep 12, 2018 06:04
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-021PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1838 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 12, 2018 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-020PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1964 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Sep 12, 2018 05:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-019PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0921 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.002 mg/l
-
- Collected
- Sep 12, 2018 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-016PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1537 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Sep 11, 2018 03:25
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-035PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0232 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Sep 11, 2018 18:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-034PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0173 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0044 mg/l
-
- Collected
- Sep 11, 2018 10:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-033PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3984 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Sep 11, 2018 09:34
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-031PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3746 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0011 mg/l
-
- Collected
- Sep 11, 2018 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-023PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.4933 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0237 mg/l
-
- Collected
- Sep 11, 2018 06:05
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 180913-022PB
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2819 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
Routine (10).