Skip to main content
Alpha

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.

Every analyte ever detected for City of Winona, with how many results found it and when it was first and last detected. Covers the whole record, not only 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 11–20 of 280 samples, newest first — collected August 6, 2024 to August 6, 2024. The summary above covers all 280.

20 results from the 10 samples listed here: 17 detected, 3 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.

We withheld the location of 9 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for City of Winona, every result from 11 to 20 of 280 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Aug 6, 2024 07:00
Sampling point
LC071 Location withheld
Sample type
Routine
Lab sample
PB-240807-120
Laboratory
MSDH Lab
0.134 mg/l , sample collected Aug 6, 2024 07:00, sampling point LC071 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 6, 2024 07:00, sampling point LC071 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 05:00
Sampling point
LC020 Location withheld
Sample type
Routine
Lab sample
PB-240807-119
Laboratory
MSDH Lab
0.426 mg/l , sample collected Aug 6, 2024 05:00, sampling point LC020 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.8 ug/l , sample collected Aug 6, 2024 05:00, sampling point LC020 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 06:00
Sampling point
LC011 Location withheld
Sample type
Routine
Lab sample
PB-240807-118
Laboratory
MSDH Lab
0.206 mg/l , sample collected Aug 6, 2024 06:00, sampling point LC011 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.6 ug/l , sample collected Aug 6, 2024 06:00, sampling point LC011 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 07:00
Sampling point
LC069 Location withheld
Sample type
Routine
Lab sample
PB-240807-117
Laboratory
MSDH Lab
0.213 mg/l , sample collected Aug 6, 2024 07:00, sampling point LC069 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 6, 2024 07:00, sampling point LC069 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 06:00
Sampling point
LC065 Location withheld
Sample type
Routine
Lab sample
PB-240807-116
Laboratory
MSDH Lab
0.495 mg/l , sample collected Aug 6, 2024 06:00, sampling point LC065 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
2.5 ug/l , sample collected Aug 6, 2024 06:00, sampling point LC065 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 05:30
Sampling point
LC001 Location withheld
Sample type
Routine
Lab sample
PB-240807-115
Laboratory
MSDH Lab
0.0105 mg/l , sample collected Aug 6, 2024 05:30, sampling point LC001 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
1.6 ug/l , sample collected Aug 6, 2024 05:30, sampling point LC001 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 22:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-240807-114
Laboratory
MSDH Lab
0.878 mg/l , sample collected Aug 6, 2024 22:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.7 ug/l , sample collected Aug 6, 2024 22:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 05:00
Sampling point
LC018 Location withheld
Sample type
Routine
Lab sample
PB-240807-113
Laboratory
MSDH Lab
0.331 mg/l , sample collected Aug 6, 2024 05:00, sampling point LC018 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
2.5 ug/l , sample collected Aug 6, 2024 05:00, sampling point LC018 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 05:00
Sampling point
LC007 Location withheld
Sample type
Routine
Lab sample
PB-240807-112
Laboratory
MSDH Lab
0.244 mg/l , sample collected Aug 6, 2024 05:00, sampling point LC007 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
3.5 ug/l , sample collected Aug 6, 2024 05:00, sampling point LC007 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Aug 6, 2024 05:05
Sampling point
LC006 Location withheld
Sample type
Routine
Lab sample
PB-240807-111
Laboratory
MSDH Lab
0.509 mg/l , sample collected Aug 6, 2024 05:05, sampling point LC006 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 6, 2024 05:05, sampling point LC006 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024

Routine (10).