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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.

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.

Every analyte ever detected for Okatoma Water Association #1, with how many results found it and when it was first and last detected. Covers the whole record, not only 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

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 171–180 of 439 samples, newest first — collected August 6, 2018 to May 6, 2019. The summary above covers all 439.

26 results from the 10 samples listed here: 19 detected, 7 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.

Chemical and radiological sample results for Okatoma Water Association #1, every result from 171 to 180 of 439 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
May 6, 2019 13:53
Sampling point
TF081 Treatment Plant 081
Sample type
Routine
Lab sample
190507-009NI
Laboratory
MSDH Lab
2.7 mg/l , sample collected May 6, 2019 13:53, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Apr 1, 2019 – Jun 30, 2019
2.7 mg/l , sample collected May 6, 2019 13:53, sampling point TF081 Nitrate 1040 EPA method QC10107041C Apr 1, 2019 – Jun 30, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 6, 2019 13:53, sampling point TF081 Nitrite 1041 EPA method QC10107041C Apr 1, 2019 – Jun 30, 2019
Collected
Jan 22, 2019 12:12
Sampling point
TF081 Treatment Plant 081
Sample type
Routine
Lab sample
190123-009NI
Laboratory
MSDH Lab
2.48 mg/l , sample collected Jan 22, 2019 12:12, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Mar 31, 2019
2.48 mg/l , sample collected Jan 22, 2019 12:12, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Mar 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 22, 2019 12:12, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Mar 31, 2019
Collected
Jan 22, 2019 12:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
190123-007NI
Laboratory
MSDH Lab
5.48 mg/l , sample collected Jan 22, 2019 12:10, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Mar 31, 2019
5.48 mg/l , sample collected Jan 22, 2019 12:10, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Mar 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 22, 2019 12:10, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Mar 31, 2019
Collected
Nov 5, 2018 13:35
Sampling point
TF081 Treatment Plant 081
Sample type
Routine
Lab sample
181106-003NI
Laboratory
MSDH Lab
2.7 mg/l , sample collected Nov 5, 2018 13:35, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Oct 1, 2018 – Dec 31, 2018
2.7 mg/l , sample collected Nov 5, 2018 13:35, sampling point TF081 Nitrate 1040 EPA method QC10107041C Oct 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 5, 2018 13:35, sampling point TF081 Nitrite 1041 EPA method QC10107041C Oct 1, 2018 – Dec 31, 2018
Collected
Nov 5, 2018 13:30
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
181106-002NI
Laboratory
MSDH Lab
5.97 mg/l , sample collected Nov 5, 2018 13:30, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Oct 1, 2018 – Dec 31, 2018
5.97 mg/l , sample collected Nov 5, 2018 13:30, sampling point TF080 Nitrate 1040 EPA method QC10107041C Oct 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 5, 2018 13:30, sampling point TF080 Nitrite 1041 EPA method QC10107041C Oct 1, 2018 – Dec 31, 2018
Collected
Oct 15, 2018
Sampling point
TF081 Treatment Plant 081
Sample type
Routine
Lab sample
4090921
Laboratory
Eurofins Eaton Analytical South Bend in
1.82 pci/l , sample collected Oct 15, 2018, sampling point TF081 Combined Radium (-226 & -228) 4010 EPA method 7500-RA Not recorded
0.88 pci/l , sample collected Oct 15, 2018, sampling point TF081 Radium-226 4020 EPA method 7500-RAB Jan 1, 2013 – Dec 31, 2018
0.94 pci/l , sample collected Oct 15, 2018, sampling point TF081 Radium-228 4030 EPA method 7500-RAD Jan 1, 2013 – Dec 31, 2018
Collected
Oct 15, 2018
Sampling point
TF081 Treatment Plant 081
Sample type
Routine
Lab sample
4090919
Laboratory
Eurofins Eaton Analytical South Bend in
2.2 pci/l , sample collected Oct 15, 2018, sampling point TF081 Gross Alpha, Incl. Radon & U 4002 EPA method 7110B Jan 1, 2013 – Dec 31, 2021
Collected
Oct 15, 2018
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
4090920
Laboratory
Eurofins Eaton Analytical South Bend in
3.4 pci/l , sample collected Oct 15, 2018, sampling point TF080 Combined Radium (-226 & -228) 4010 EPA method 7500-RA Not recorded
1.2 pci/l , sample collected Oct 15, 2018, sampling point TF080 Radium-226 4020 EPA method 7500-RAB Jan 1, 2013 – Dec 31, 2018
2.2 pci/l , sample collected Oct 15, 2018, sampling point TF080 Radium-228 4030 EPA method 7500-RAD Jan 1, 2013 – Dec 31, 2018
Collected
Oct 15, 2018
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
4090918
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 1.47 pci/l Minimum Reporting Level , sample collected Oct 15, 2018, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 7110B Jan 1, 2013 – Dec 31, 2018
Collected
Aug 6, 2018 02:40
Sampling point
TF081 Treatment Plant 081
Sample type
Routine
Lab sample
180807-007NI
Laboratory
MSDH Lab
2.68 mg/l , sample collected Aug 6, 2018 02:40, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jul 1, 2018 – Sep 30, 2018
2.68 mg/l , sample collected Aug 6, 2018 02:40, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jul 1, 2018 – Sep 30, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 6, 2018 02:40, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jul 1, 2018 – Sep 30, 2018

Routine (10).