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
MS0400011 , Town of Walnut Grove
24 of the 58 analytes this system has been tested for have been detected at least once, across 268 samples on record.
The other 34 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 268 samples on record, detections range from October 1, 2003 to November 20, 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 |
|---|---|---|---|---|
| Barium 1010 | Inorganic Chemical | 34 of 34 results | Oct 1, 2003 | Apr 1, 2025 |
| Fluoride 1025 | Inorganic Chemical | 33 of 34 results | Oct 1, 2003 | Apr 1, 2025 |
| Copper, Free 1022 | Inorganic Chemical | 33 of 33 results | Jul 12, 2007 | Aug 29, 2023 |
| Lead 1030 | Inorganic Chemical | 25 of 33 results | Jul 12, 2007 | Aug 29, 2023 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 19 of 21 results | Aug 16, 2007 | Nov 20, 2025 |
| TTHM 2950 | Organic Chemical | 19 of 21 results | Aug 16, 2007 | Nov 20, 2025 |
| Chromium 1020 | Inorganic Chemical | 19 of 34 results | Oct 1, 2003 | Apr 1, 2025 |
| Chloroform 2941 | Organic Chemical | 15 of 16 results | Aug 16, 2007 | Nov 20, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 15 of 15 results | Mar 6, 2012 | Oct 5, 2012 |
| Dichloroacetic Acid 2451 | Organic Chemical | 14 of 15 results | Sep 30, 2009 | Nov 20, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 14 of 15 results | Sep 30, 2009 | Nov 20, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 14 of 16 results | Sep 30, 2009 | Nov 20, 2025 |
| Sodium 1052 | Inorganic Chemical | 9 of 9 results | Sep 23, 2019 | Feb 11, 2025 |
| Sulfate 1055 | Inorganic Chemical | 8 of 8 results | Oct 1, 2003 | Mar 3, 2004 |
| Dichloromethane 2964 | Organic Chemical | 4 of 25 results | Aug 12, 2004 | Aug 12, 2004 |
| Nickel 1036 | Inorganic Chemical | 3 of 34 results | Apr 20, 2015 | Mar 11, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 3 of 15 results | Sep 30, 2009 | Jun 10, 2024 |
| Xylenes, Total 2955 | Organic Chemical | 3 of 25 results | Jul 18, 2022 | Jul 18, 2022 |
| Dibromochloromethane 2944 | Organic Chemical | 2 of 16 results | Jun 10, 2024 | Aug 5, 2024 |
| Selenium 1045 | Inorganic Chemical | 2 of 34 results | Mar 28, 2005 | Dec 12, 2005 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 15 results | Jun 10, 2024 | Jun 10, 2024 |
| Nitrite 1041 | Inorganic Chemical | 1 of 69 results | May 7, 2007 | May 7, 2007 |
| Arsenic 1005 | Inorganic Chemical | 1 of 34 results | Dec 12, 2005 | Dec 12, 2005 |
| Cadmium 1015 | Inorganic Chemical | 1 of 34 results | Dec 12, 2005 | Dec 12, 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 161–170 of 268 samples, newest first — collected June 14, 2011 to March 6, 2012. The summary above covers all 268.
20 results from the 10 samples listed here: 8 detected, 12 not detected. Across the whole record it is 292 of 1,482. 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 |
|---|---|---|
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 6, 2012 14:08, sampling point TF104 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 6, 2012 15:04, sampling point TF103 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 6, 2012 14:44, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Mar 31, 2012 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:35, sampling point TF103 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:35, sampling point TF103 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:35, sampling point TF103 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:23, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:23, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:23, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:10, sampling point TF104 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:10, sampling point TF104 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 22, 2012 02:10, sampling point TF104 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| 0.0931 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0008 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.0423 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0076 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
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| 0.1953 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0012 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.3089 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0021 mg/l , sample collected Jun 14, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
-
- Collected
- Mar 6, 2012 14:08
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 120307-094RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 6, 2012 15:04
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 120307-080RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Mar 6, 2012 14:44
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120307-079RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Mar 31, 2012
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Feb 22, 2012 02:35
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 120223-056NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
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
- Feb 22, 2012 02:23
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 120223-055NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
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
- Feb 22, 2012 02:10
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 120223-054NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
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
- Jun 14, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110615-141PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0931 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jun 14, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110615-140PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0423 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0076 mg/l
-
- Collected
- Jun 14, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110615-138PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1953 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0012 mg/l
-
- Collected
- Jun 14, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110615-137PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3089 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0021 mg/l
Routine (10).