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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

MS0490008 , South Winona Water Association

27 of the 56 analytes this system has been tested for have been detected at least once, across 243 samples on record.

The other 29 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 243 samples on record, detections range from October 8, 2003 to June 15, 2026. 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 South Winona Water Association, 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 59 of 59 results Jul 31, 2007 Sep 13, 2023
Lead 1030 Inorganic Chemical 40 of 59 results Jul 31, 2007 Sep 13, 2023
Xylenes, Total 2955 Organic Chemical 26 of 53 results Aug 26, 2015 Sep 20, 2021
TTHM 2950 Organic Chemical 21 of 21 results Jul 19, 2004 Feb 9, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 18 of 21 results Jun 16, 2010 Feb 9, 2026
Chloroform 2941 Organic Chemical 14 of 15 results Jun 16, 2010 Feb 9, 2026
Bromodichloromethane 2943 Organic Chemical 14 of 15 results Jun 16, 2010 Feb 9, 2026
Dibromochloromethane 2944 Organic Chemical 14 of 15 results Jun 16, 2010 Feb 9, 2026
Fluoride 1025 Inorganic Chemical 13 of 14 results Oct 8, 2003 Jun 15, 2026
Dichloroacetic Acid 2451 Organic Chemical 13 of 15 results Aug 29, 2007 Feb 9, 2026
Barium 1010 Inorganic Chemical 13 of 14 results Oct 8, 2003 May 15, 2023
Trichloroacetic Acid 2452 Organic Chemical 11 of 15 results Jul 5, 2016 Feb 9, 2026
Chromium 1020 Inorganic Chemical 11 of 14 results Mar 8, 2004 May 15, 2023
Dibromoacetic Acid 2454 Organic Chemical 10 of 15 results Jul 5, 2016 Feb 9, 2026
Bromoform 2942 Organic Chemical 10 of 15 results Jul 5, 2016 Feb 9, 2026
Sodium 1052 Inorganic Chemical 7 of 7 results Sep 19, 2019 Jun 15, 2026
Nickel 1036 Inorganic Chemical 7 of 13 results Apr 4, 2005 May 15, 2023
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 9 results Dec 12, 2011 Jul 17, 2012
Arsenic 1005 Inorganic Chemical 4 of 14 results May 8, 2017 Apr 28, 2020
Selenium 1045 Inorganic Chemical 3 of 14 results Apr 4, 2005 May 8, 2017
Ethylbenzene 2992 Organic Chemical 2 of 53 results Jun 14, 2016 Jun 14, 2016
Sulfate 1055 Inorganic Chemical 2 of 2 results Oct 8, 2003 Mar 8, 2004
Thallium, Total 1085 Inorganic Chemical 1 of 14 results Apr 28, 2020 Apr 28, 2020
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 9 results Dec 14, 2015 Dec 14, 2015
Radium-226 4020 Radionuclide 1 of 9 results Dec 14, 2015 Dec 14, 2015
Nitrite 1041 Inorganic Chemical 1 of 33 results Aug 22, 2005 Aug 22, 2005
Cadmium 1015 Inorganic Chemical 1 of 14 results Apr 4, 2005 Apr 4, 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 151–160 of 243 samples, newest first — collected October 19, 2015 to December 14, 2015. The summary above covers all 243.

58 results from the 10 samples listed here: 4 detected, 54 not detected. Across the whole record it is 322 of 1,738. 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 South Winona Water Association, every result from 151 to 160 of 243 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
Dec 14, 2015 09:30
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
201512180232GA
Laboratory
Radiation Safety Engineering
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Dec 14, 2015 09:30, sampling point TF104 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Oct 1, 2015 – Dec 31, 2015
Collected
Dec 14, 2015 09:30
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
201512180232
Laboratory
Radiation Safety Engineering
0.5 pci/l The agency recorded which kind of limit this result was below, but stored nothing as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 14, 2015 09:30, sampling point TF104 Combined Radium (-226 & -228) 4010 Not recorded
0.5 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 14, 2015 09:30, sampling point TF104 Radium-226 4020 EPA method 903.1 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.26 pci/l Minimum Reporting Level , sample collected Dec 14, 2015 09:30, sampling point TF104 Radium-228 4030 EPA method 904 Oct 1, 2015 – Dec 31, 2015
Collected
Dec 14, 2015 09:05
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
201512180231GA
Laboratory
Radiation Safety Engineering
Not detected below 0.36 pci/l Minimum Reporting Level , sample collected Dec 14, 2015 09:05, sampling point TF103 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Oct 1, 2015 – Dec 31, 2015
Collected
Dec 14, 2015 09:05
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
201512180231
Laboratory
Radiation Safety Engineering
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Dec 14, 2015 09:05, sampling point TF103 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.228 pci/l Minimum Reporting Level , sample collected Dec 14, 2015 09:05, sampling point TF103 Radium-226 4020 EPA method 903.1 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Dec 14, 2015 09:05, sampling point TF103 Radium-228 4030 EPA method 904 Oct 1, 2015 – Dec 31, 2015
Collected
Nov 16, 2015 13:15
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
151117-034NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 13:15, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 13:15, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 13:15, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Nov 16, 2015 13:35
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
151117-023NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 13:35, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 13:35, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 16, 2015 13:35, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Oct 26, 2015 02:30
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
151027-016VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
3.16 ug/l , sample collected Oct 26, 2015 02:30, sampling point TF104 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Dichloromethane 2964 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Benzene 2990 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Toluene 2991 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:30, sampling point TF104 Styrene 2996 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Collected
Oct 26, 2015 02:00
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
151027-015VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
3.1 ug/l , sample collected Oct 26, 2015 02:00, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Benzene 2990 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Toluene 2991 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 26, 2015 02:00, sampling point TF103 Styrene 2996 EPA method 524.2 Oct 1, 2015 – Dec 31, 2015
Collected
Oct 19, 2015 13:25
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
151022-007RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2015 13:25, sampling point TF104 Combined Uranium 4006 EPA method 200.8 Oct 1, 2015 – Dec 31, 2015
Collected
Oct 19, 2015 13:00
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
151022-005RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 19, 2015 13:00, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Oct 1, 2015 – Dec 31, 2015

Routine (10).