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
MS0640009 , Okatoma Water Association #1
27 of the 98 analytes this system has been tested for have been detected at least once, across 439 samples on record.
The other 71 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 439 samples on record, detections range from October 22, 2003 to July 22, 2026. 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 |
|---|---|---|---|---|
| Nitrate-Nitrite 1038 | Inorganic Chemical | 124 of 138 results | Jun 14, 2004 | Jul 22, 2026 |
| Nitrate 1040 | Inorganic Chemical | 124 of 138 results | Jun 14, 2004 | Jul 22, 2026 |
| Copper, Free 1022 | Inorganic Chemical | 107 of 107 results | Sep 6, 2007 | Jul 8, 2025 |
| Lead 1030 | Inorganic Chemical | 40 of 107 results | Sep 6, 2007 | Jul 8, 2025 |
| Barium 1010 | Inorganic Chemical | 25 of 25 results | Oct 22, 2003 | Apr 7, 2025 |
| TTHM 2950 | Organic Chemical | 18 of 20 results | Aug 16, 2004 | Jun 4, 2025 |
| Nickel 1036 | Inorganic Chemical | 17 of 25 results | Mar 22, 2004 | Apr 7, 2025 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 14 of 14 results | Mar 14, 2012 | Oct 8, 2019 |
| Radium-226 4020 | Radionuclide | 14 of 14 results | Mar 14, 2012 | Oct 8, 2019 |
| Radium-228 4030 | Radionuclide | 14 of 14 results | Mar 14, 2012 | Oct 8, 2019 |
| Bromodichloromethane 2943 | Organic Chemical | 13 of 14 results | Sep 10, 2007 | Jun 4, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 12 of 14 results | Sep 10, 2007 | Jun 4, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 11 of 14 results | Mar 14, 2012 | Oct 15, 2018 |
| Fluoride 1025 | Inorganic Chemical | 9 of 25 results | Apr 10, 2006 | Apr 7, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 8 of 20 results | Jul 6, 2010 | Apr 7, 2025 |
| Chloroform 2941 | Organic Chemical | 7 of 14 results | Sep 10, 2007 | Jun 4, 2025 |
| Bromoform 2942 | Organic Chemical | 6 of 14 results | Jul 6, 2010 | Jun 4, 2025 |
| Sodium 1052 | Inorganic Chemical | 5 of 5 results | Sep 17, 2019 | Jul 22, 2026 |
| Dibromoacetic Acid 2454 | Organic Chemical | 3 of 13 results | Sep 4, 2013 | Jun 4, 2025 |
| Chromium 1020 | Inorganic Chemical | 3 of 25 results | Oct 22, 2003 | Apr 7, 2025 |
| Arsenic 1005 | Inorganic Chemical | 2 of 25 results | Feb 8, 2010 | Feb 12, 2024 |
| Xylenes, Total 2955 | Organic Chemical | 1 of 29 results | Nov 29, 2022 | Nov 29, 2022 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 13 results | Oct 12, 2020 | Oct 12, 2020 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 13 results | Dec 6, 2016 | Dec 6, 2016 |
| Selenium 1045 | Inorganic Chemical | 1 of 25 results | Feb 8, 2010 | Feb 8, 2010 |
| Cadmium 1015 | Inorganic Chemical | 1 of 25 results | Nov 3, 2008 | Nov 3, 2008 |
| Cyanide 1024 | Inorganic Chemical | 1 of 27 results | Apr 10, 2006 | Apr 10, 2006 |
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 11–20 of 40 samples, newest first — collected July 8, 2025 to July 8, 2025. The summary above covers all 40.
21 results from the 10 samples listed here: 15 detected, 6 not detected. Across the whole record it is 582 of 1,978. 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 9 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 |
|---|---|---|
|
||
| 0.0268 mg/l , sample collected Jul 8, 2025 07:00, sampling point LC030 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 0.9 ug/l , sample collected Jul 8, 2025 07:00, sampling point LC030 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0451 mg/l , sample collected Jul 8, 2025 06:45, sampling point LC014 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 0.9 ug/l , sample collected Jul 8, 2025 06:45, sampling point LC014 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0597 mg/l , sample collected Jul 8, 2025 06:30, sampling point LC036 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 8, 2025 06:30, sampling point LC036 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0641 mg/l , sample collected Jul 8, 2025 08:30, sampling point LC020 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 8, 2025 08:30, sampling point LC020 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0422 mg/l , sample collected Jul 8, 2025 08:00, sampling point LC021 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 8, 2025 08:00, sampling point LC021 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0269 mg/l , sample collected Jul 8, 2025 06:00, sampling point LC029 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 8, 2025 06:00, sampling point LC029 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0637 mg/l , sample collected Jul 8, 2025 05:45, sampling point LC022 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 8, 2025 05:45, sampling point LC022 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0336 mg/l , sample collected Jul 8, 2025 05:30, sampling point LC004 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 0.5 ug/l , sample collected Jul 8, 2025 05:30, sampling point LC004 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0418 mg/l , sample collected Jul 8, 2025 08:00, sampling point LC023 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 9.4 ug/l , sample collected Jul 8, 2025 08:00, sampling point LC023 | Lead 1030 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 4 mg/l , sample collected Jul 8, 2025 14:30, sampling point TF081 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jul 1, 2025 – Sep 30, 2025 |
| 4 mg/l , sample collected Jul 8, 2025 14:30, sampling point TF081 | Nitrate 1040 EPA method QC10107041C | Jul 1, 2025 – Sep 30, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 8, 2025 14:30, sampling point TF081 | Nitrite 1041 EPA method QC10107041C | Jul 1, 2025 – Sep 30, 2025 |
-
- Collected
- Jul 8, 2025 07:00
- Sampling point
- LC030 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-014
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0268 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.9 ug/l
-
- Collected
- Jul 8, 2025 06:45
- Sampling point
- LC014 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-016
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0451 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.9 ug/l
-
- Collected
- Jul 8, 2025 06:30
- Sampling point
- LC036 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-017
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0597 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 8, 2025 08:30
- Sampling point
- LC020 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-020
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0641 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 8, 2025 08:00
- Sampling point
- LC021 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-013
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0422 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 8, 2025 06:00
- Sampling point
- LC029 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-015
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0269 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 8, 2025 05:45
- Sampling point
- LC022 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-018
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0637 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 8, 2025 05:30
- Sampling point
- LC004 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-012
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0336 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.5 ug/l
-
- Collected
- Jul 8, 2025 08:00
- Sampling point
- LC023 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250710-019
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0418 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 9.4 ug/l
-
- Collected
- Jul 8, 2025 14:30
- Sampling point
- TF081 Treatment Plant 081
- Sample type
- Routine
- Lab sample
- NI-250709-007
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2025 – Sep 30, 2025
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 4 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 4 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
Routine (10).