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.
| 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 201–210 of 243 samples, newest first — collected January 19, 2010 to August 8, 2011. The summary above covers all 243.
28 results from the 10 samples listed here: 14 detected, 14 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.2077 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0097 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.3123 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0009 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.3644 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0017 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.2599 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 8, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.4184 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0031 mg/l , sample collected Aug 8, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 7, 2011, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2011 – Dec 31, 2011 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 7, 2011, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2011 – Dec 31, 2011 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 7, 2011, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2011 – Dec 31, 2011 |
|
||
| Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Aug 30, 2010, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Aug 30, 2010, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2010 – Dec 31, 2010 |
| Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Aug 30, 2010, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2010 – Dec 31, 2010 |
|
||
| 3.36 ug/l , sample collected Jun 16, 2010, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2010, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.85 ug/l , sample collected Jun 16, 2010, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 1.72 ug/l , sample collected Jun 16, 2010, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 6.93 ug/l , sample collected Jun 16, 2010, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2008 – Dec 31, 2010 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jun 16, 2010, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 16, 2010, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 16, 2010, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 16, 2010, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jun 16, 2010, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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 Jun 16, 2010, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2008 – Dec 31, 2010 |
|
||
| Not detected below 15 ug/l Minimum Reporting Level , sample collected Jan 19, 2010, sampling point TF080 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2008 – Dec 31, 2010 |
-
- Collected
- Aug 8, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110809-021PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2077 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0097 mg/l
-
- Collected
- Aug 8, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110809-020PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3123 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0009 mg/l
-
- Collected
- Aug 8, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110809-019PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3644 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0017 mg/l
-
- Collected
- Aug 8, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110809-018PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2599 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Aug 8, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110809-017PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.4184 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0031 mg/l
-
- Collected
- Mar 7, 2011
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 110308-098NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2011
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Aug 30, 2010
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 100831-051NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2010 – Dec 31, 2010
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.25 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.2 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.05 mg/l Minimum Reporting Level
-
- Collected
- Jun 16, 2010
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 100617-012TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 3.36 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 1.85 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 1.72 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 6.93 ug/l
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
- Collected
- Jun 16, 2010
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 100617-012HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. 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.
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
- Collected
- Jan 19, 2010
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 100120-011CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2008 – Dec 31, 2010
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 15 ug/l Minimum Reporting Level
Routine (10).