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 71–80 of 268 samples, newest first — collected August 12, 2019 to September 14, 2020. The summary above covers all 268.
30 results from the 10 samples listed here: 12 detected, 18 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 0.002 mg/l Minimum Reporting Level , sample collected Sep 14, 2020 12:32, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.015 mg/l , sample collected Sep 14, 2020 12:32, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.015 mg/l , sample collected Sep 14, 2020 12:32, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 14, 2020 12:32, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 14, 2020 12:32, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.03 mg/l , sample collected Sep 14, 2020 12:32, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2020 – Dec 31, 2020 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:10, sampling point TF103 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:10, sampling point TF103 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:10, sampling point TF103 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:23, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:23, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:23, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:40, sampling point TF104 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:40, sampling point TF104 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 17, 2020 13:40, sampling point TF104 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2020 – Dec 31, 2020 |
|
||
| 87000 ug/l , sample collected Sep 23, 2019 13:55, sampling point TF104 | Sodium 1052 EPA method 200.7 | Not recorded |
|
||
| 79000 ug/l , sample collected Sep 23, 2019 14:30, sampling point TF103 | Sodium 1052 EPA method 200.7 | Not recorded |
|
||
| 77000 ug/l , sample collected Sep 23, 2019 14:15, sampling point TF101 | Sodium 1052 EPA method 200.7 | Not recorded |
|
||
| Not detected below 0.17 mfl Minimum Reporting Level , sample collected Sep 10, 2019, sampling point DS000 | Asbestos 1094 EPA method 100.2 | Not recorded |
|
||
| 34.3 ug/l , sample collected Aug 12, 2019 03:59, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 12, 2019 03:59, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 4.37 ug/l , sample collected Aug 12, 2019 03:59, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 12, 2019 03:59, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 38.7 ug/l , sample collected Aug 12, 2019 03:59, sampling point MRT000 | TTHM 2950 | Jan 1, 2019 – Dec 31, 2019 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 12, 2019 03:47, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.013 mg/l , sample collected Aug 12, 2019 03:47, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.019 mg/l , sample collected Aug 12, 2019 03:47, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 12, 2019 03:47, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 12, 2019 03:47, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.032 mg/l , sample collected Aug 12, 2019 03:47, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2019 – Dec 31, 2019 |
-
- Collected
- Sep 14, 2020 12:32
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 200915-007HA
- 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
- 0.015 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.015 mg/l
- 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
- 0.03 mg/l
- Monitoring period
- Jan 1, 2020 – Dec 31, 2020
-
- Collected
- Mar 17, 2020 13:10
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 200318-048NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2020
-
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
- Mar 17, 2020 13:23
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 200318-047NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2020
-
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
- Mar 17, 2020 13:40
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 200318-046NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2020 – Dec 31, 2020
-
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 23, 2019 13:55
- Sampling point
- TF104 Treatment Plant T104
- Sample type
- Routine
- Lab sample
- 680-174577-43
- Laboratory
- Test America-Savannah
- Monitoring period
- Not recorded
-
Sodium 1052 EPA method 200.7
- Result
- 87000 ug/l
-
- Collected
- Sep 23, 2019 14:30
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 680-174577-42
- Laboratory
- Test America-Savannah
- Monitoring period
- Not recorded
-
Sodium 1052 EPA method 200.7
- Result
- 79000 ug/l
-
- Collected
- Sep 23, 2019 14:15
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 680-174577-41
- Laboratory
- Test America-Savannah
- Monitoring period
- Not recorded
-
Sodium 1052 EPA method 200.7
- Result
- 77000 ug/l
-
- Collected
- Sep 10, 2019
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 041923724-0001
- Laboratory
- Emsl Analytical, Inc.
- Monitoring period
- Not recorded
-
Asbestos 1094 EPA method 100.2
- Result
- Not detected below 0.17 mfl Minimum Reporting Level
-
- Collected
- Aug 12, 2019 03:59
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 190813-011TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 34.3 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
- 4.37 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950
- Result
- 38.7 ug/l
- Monitoring period
- Jan 1, 2019 – Dec 31, 2019
-
- Collected
- Aug 12, 2019 03:47
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 190813-011HA
- 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
- 0.013 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.019 mg/l
- 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
- 0.032 mg/l
- Monitoring period
- Jan 1, 2019 – Dec 31, 2019
Routine (10).