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 41–50 of 280 samples, newest first — collected September 29, 2021 to June 27, 2023. The summary above covers all 280.

44 results from the 10 samples listed here: 4 detected, 40 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.

Chemical and radiological sample results for City of Winona, every result from 41 to 50 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 Jun 27, 2023 07:09 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-230628-006 Laboratory MSDH Lab
4.16 ug/l , sample collected Jun 27, 2023 07:09, sampling point MRT000	TTHM 2950 EPA method 524.2	Not recorded
Collected Mar 2, 2023 09:35 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-230302-051 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 2, 2023 09:35, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 2, 2023 09:35, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Jan 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 2, 2023 09:35, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Jan 1, 2023 – Dec 31, 2023
Collected Dec 1, 2022 07:20 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample VO-221202-011 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Dichloromethane 2964 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Benzene 2990 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Toluene 2991 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2022 07:20, sampling point TF080	Styrene 2996 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Collected Sep 28, 2022 15:39 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample IN-220929-051 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Arsenic 1005 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
0.0932 mg/l , sample collected Sep 28, 2022 15:39, sampling point TF080	Barium 1010 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Cadmium 1015 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Chromium 1020 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Fluoride 1025 EPA method QC 10-109-12-2-A	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Mercury 1035 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Selenium 1045 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Antimony, Total 1074 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Beryllium, Total 1075 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 28, 2022 15:39, sampling point TF080	Thallium, Total 1085 EPA method 200.8	Jan 1, 2020 – Dec 31, 2022
Collected Jun 7, 2022 14:15 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-220608-022 Laboratory MSDH Lab
3.39 ug/l , sample collected Jun 7, 2022 14:15, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Not recorded
Collected Jun 7, 2022 14:15 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-220608-022 Laboratory MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 7, 2022 14:15, sampling point MRT000	TTHM 2950 EPA method 524.2	Not recorded
Collected May 18, 2022 16:10 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample CN-220519-052 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 18, 2022 16:10, sampling point TF080	Cyanide 1024 EPA method QC10204001X	Jan 1, 2020 – Dec 31, 2022
Collected Mar 1, 2022 15:00 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NA-220302-038 Laboratory MSDH Lab
4.37 mg/l , sample collected Mar 1, 2022 15:00, sampling point TF080	Sodium 1052 EPA method 200.7	Not recorded
Collected Mar 1, 2022 15:00 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-220302-048 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 15:00, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 15:00, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 15:00, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Collected Sep 29, 2021 15:18 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-210930-017 Laboratory MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 29, 2021 15:18, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Jan 1, 2021 – Dec 31, 2021

Collected
Jun 27, 2023 07:09

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-230628-006

Laboratory
MSDH Lab

Monitoring period
Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  4.16 ug/l
Collected
Mar 2, 2023 09:35

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-230302-051

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2023
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Dec 1, 2022 07:20

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
VO-221202-011

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2022
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Sep 28, 2022 15:39

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
IN-220929-051

Laboratory
MSDH Lab
- Arsenic 1005 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Barium 1010 EPA method 200.8
  
  Result
  0.0932 mg/l
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Chromium 1020 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Fluoride 1025 EPA method QC 10-109-12-2-A
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- 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
  Not detected below 0.0025 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2020 – Dec 31, 2022
Collected
Jun 7, 2022 14:15

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-220608-022

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  3.39 ug/l
Collected
Jun 7, 2022 14:15

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-220608-022

Laboratory
MSDH Lab

Monitoring period
Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  Not detected below 1 ug/l Minimum Reporting Level
Collected
May 18, 2022 16:10

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
CN-220519-052

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2020 – Dec 31, 2022
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Mar 1, 2022 15:00

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NA-220302-038

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  4.37 mg/l
Collected
Mar 1, 2022 15:00

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-220302-048

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2022
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Sep 29, 2021 15:18

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-210930-017

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  Not detected below 1 ug/l Minimum Reporting Level

Routine (10).