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
MS0340011 , Oak Grove Water Assn
22 of the 58 analytes this system has been tested for have been detected at least once, across 302 samples on record.
The other 36 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 302 samples on record, detections range from September 24, 2003 to November 19, 2025. These figures cover the whole record; the list of samples further down is narrowed.
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 | 61 of 61 results | Jul 24, 2007 | Aug 22, 2023 |
| Lead 1030 | Inorganic Chemical | 42 of 61 results | Jul 24, 2007 | Aug 22, 2023 |
| Barium 1010 | Inorganic Chemical | 24 of 24 results | Sep 24, 2003 | Feb 24, 2025 |
| Fluoride 1025 | Inorganic Chemical | 24 of 24 results | Sep 24, 2003 | Feb 24, 2025 |
| TTHM 2950 | Organic Chemical | 22 of 22 results | Jun 16, 2004 | Oct 13, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 20 of 21 results | Aug 16, 2007 | Nov 19, 2025 |
| Chloroform 2941 | Organic Chemical | 17 of 17 results | Aug 16, 2007 | Oct 13, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 17 of 17 results | Aug 16, 2007 | Oct 13, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 15 of 15 results | Sep 21, 2009 | Nov 19, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 15 of 15 results | Sep 21, 2009 | Nov 19, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 12 of 17 results | Sep 21, 2009 | Oct 13, 2025 |
| Sodium 1052 | Inorganic Chemical | 9 of 9 results | Sep 18, 2019 | Feb 3, 2025 |
| Nickel 1036 | Inorganic Chemical | 8 of 24 results | Feb 13, 2006 | Feb 24, 2025 |
| Chromium 1020 | Inorganic Chemical | 7 of 24 results | Sep 24, 2003 | May 30, 2017 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 6 of 11 results | Dec 15, 2011 | Dec 2, 2013 |
| Xylenes, Total 2955 | Organic Chemical | 5 of 66 results | Feb 2, 2004 | May 31, 2005 |
| Sulfate 1055 | Inorganic Chemical | 4 of 4 results | Sep 24, 2003 | Feb 25, 2004 |
| Ethylbenzene 2992 | Organic Chemical | 2 of 66 results | Feb 2, 2004 | Feb 2, 2004 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 15 results | Sep 8, 2020 | Sep 8, 2020 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 15 results | Jul 1, 2015 | Jul 1, 2015 |
| Arsenic 1005 | Inorganic Chemical | 1 of 24 results | Apr 2, 2014 | Apr 2, 2014 |
| Dichloromethane 2964 | Organic Chemical | 1 of 66 results | Aug 4, 2004 | Aug 4, 2004 |
Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.
Choose a date range
The most recent samples, result by result
The table below lists 11–17 of 17 samples, newest first — collected October 30, 2024 to February 24, 2025. The summary above covers all 17.
29 results from the 7 samples listed here: 17 detected, 12 not detected. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
We withheld the location of 2 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 15:53, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 15:53, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 15:53, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
|
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| 53.2 mg/l , sample collected Feb 3, 2025 05:12, sampling point TF103 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
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| 56.1 mg/l , sample collected Feb 3, 2025 05:25, sampling point TF102 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 54.1 mg/l , sample collected Feb 3, 2025 05:18, sampling point TF101 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
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| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:34, sampling point SM2 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 2.6 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 3.4 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:34, sampling point SM2 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:34, sampling point SM2 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 6 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
| 5.4 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:34, sampling point SM2 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 2.2 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 0.83 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 8.43 ug/l , sample collected Nov 21, 2024 15:34, sampling point SM2 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:24, sampling point SM1 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 6 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 5.5 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:24, sampling point SM1 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:24, sampling point SM1 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 11.5 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
| 11 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 21, 2024 15:24, sampling point SM1 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 3.8 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 1.3 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 16.1 ug/l , sample collected Nov 21, 2024 15:24, sampling point SM1 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
|
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 30, 2024 15:18, sampling point TF103 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2022 – Dec 31, 2024 |
-
- Collected
- Feb 24, 2025 15:53
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NI-250225-025
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
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
- Feb 3, 2025 05:12
- Sampling point
- TF103 Treatment Facility TF103
- Sample type
- Routine
- Lab sample
- NA-250204-033
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 53.2 mg/l
-
- Collected
- Feb 3, 2025 05:25
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- NA-250204-032
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 56.1 mg/l
-
- Collected
- Feb 3, 2025 05:18
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NA-250204-031
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 54.1 mg/l
-
- Collected
- Nov 21, 2024 15:34
- Sampling point
- SM2 Location withheld
- Sample type
- Routine
- Lab sample
- 810-129194-2
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 2.6 ug/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 3.4 ug/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 6 ug/l
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- 5.4 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 2.2 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 0.83 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 8.43 ug/l
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
- Collected
- Nov 21, 2024 15:24
- Sampling point
- SM1 Location withheld
- Sample type
- Routine
- Lab sample
- 810-129194-1
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 6 ug/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 5.5 ug/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 11.5 ug/l
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- 11 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 3.8 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 1.3 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 16.1 ug/l
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
- Collected
- Oct 30, 2024 15:18
- Sampling point
- TF103 Treatment Facility TF103
- Sample type
- Routine
- Lab sample
- CN-241031-011
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
Routine (7).