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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

MS0640022 , Okatoma Water Association #2

39 of the 72 analytes this system has been tested for have been detected at least once, across 643 samples on record.

The other 33 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 643 samples on record, detections range from April 16, 2002 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 #2, 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
Copper, Free 1022 Inorganic Chemical 164 of 166 results Jun 10, 2004 Aug 20, 2025
Barium 1010 Inorganic Chemical 69 of 69 results Apr 16, 2002 Jun 25, 2026
Xylenes, Total 2955 Organic Chemical 49 of 143 results Sep 15, 2010 Jul 19, 2021
Fluoride 1025 Inorganic Chemical 47 of 70 results Apr 16, 2002 Apr 7, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 44 of 108 results Jun 14, 2004 Jul 22, 2026
Nitrate 1040 Inorganic Chemical 44 of 108 results Jun 14, 2004 Jul 22, 2026
Lead 1030 Inorganic Chemical 30 of 166 results Jun 10, 2004 Aug 20, 2025
Nickel 1036 Inorganic Chemical 21 of 68 results Nov 24, 2003 Apr 7, 2025
Chromium 1020 Inorganic Chemical 19 of 69 results Apr 16, 2002 Apr 7, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 16 of 17 results Dec 14, 2011 Jan 16, 2018
Ethylbenzene 2992 Organic Chemical 12 of 143 results Aug 29, 2011 Feb 23, 2016
Sodium 1052 Inorganic Chemical 11 of 11 results Apr 27, 2010 Jul 22, 2026
TTHM 2950 Organic Chemical 7 of 17 results Oct 1, 2007 Sep 16, 2025
Selenium 1045 Inorganic Chemical 7 of 69 results Mar 2, 2005 Feb 8, 2010
Bromodichloromethane 2943 Organic Chemical 6 of 13 results Oct 1, 2007 Sep 16, 2025
Dibromochloromethane 2944 Organic Chemical 6 of 13 results Oct 1, 2007 Nov 18, 2024
Cadmium 1015 Inorganic Chemical 5 of 69 results Mar 31, 2004 Jan 23, 2006
Chloroform 2941 Organic Chemical 4 of 13 results Oct 1, 2007 Sep 16, 2025
Sulfate 1055 Inorganic Chemical 4 of 10 results Apr 16, 2002 Apr 27, 2010
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 3 of 17 results Jul 6, 2010 Jul 8, 2024
Carbon Tetrachloride 2982 Organic Chemical 2 of 143 results Aug 26, 2020 Aug 26, 2020
Radium-226 4020 Radionuclide 2 of 23 results Dec 12, 2012 Jan 16, 2018
Gross Alpha Particle Activity 4109 Radionuclide 2 of 6 results Sep 26, 2012 Dec 12, 2012
Nitrite 1041 Inorganic Chemical 1 of 108 results Apr 19, 2021 Apr 19, 2021
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 23 results Dec 12, 2012 Dec 12, 2012
Toluene 2991 Organic Chemical 1 of 143 results Jan 18, 2012 Jan 18, 2012
Calcium 1016 Inorganic Chemical 1 of 1 result Apr 27, 2010 Apr 27, 2010
Chloride 1017 Inorganic Chemical 1 of 1 result Apr 27, 2010 Apr 27, 2010
Magnesium 1031 Inorganic Chemical 1 of 1 result Apr 27, 2010 Apr 27, 2010
Manganese 1032 Inorganic Chemical 1 of 1 result Apr 27, 2010 Apr 27, 2010
Potassium 1042 Inorganic Chemical 1 of 1 result Apr 27, 2010 Apr 27, 2010
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010
Carbon Dioxide 1901 Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010
Alkalinity, Total 1927 Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Apr 27, 2010 Apr 27, 2010
Calculated Sodium NACA Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010
PH, Field Result PHFD Water Quality 1 of 1 result Apr 27, 2010 Apr 27, 2010

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 421–430 of 643 samples, newest first — collected May 21, 2012 to July 10, 2012. The summary above covers all 643.

62 results from the 10 samples listed here: 3 detected, 59 not detected. Across the whole record it is 590 of 4,799. 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 #2, every result from 421 to 430 of 643 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
Jul 10, 2012 14:25
Sampling point
TF107
Sample type
Routine
Lab sample
120711-002
Laboratory
Radiation Safety Engineering
0.8 pci/l , sample collected Jul 10, 2012 14:25, sampling point TF107 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.5 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:25, sampling point TF107 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.337 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:25, sampling point TF107 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:25, sampling point TF107 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 02:25
Sampling point
TF107
Sample type
Routine
Lab sample
120711-002RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2012 02:25, sampling point TF107 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Jun 26, 2012 15:00
Sampling point
WL009 Well W009
Sample type
Routine
Lab sample
120627-002
Laboratory
Radiation Safety Engineering
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jun 26, 2012 15:00, sampling point WL009 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.288 pci/l Minimum Reporting Level , sample collected Jun 26, 2012 15:00, sampling point WL009 Radium-226 4020 EPA method 903.1 Not recorded
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jun 26, 2012 15:00, sampling point WL009 Radium-228 4030 EPA method 904 Not recorded
Not detected below 0.31 pci/l Minimum Reporting Level , sample collected Jun 26, 2012 15:00, sampling point WL009 Gross Alpha Particle Activity 4109 EPA method 00-02 Not recorded
Collected
Jun 26, 2012 15:00
Sampling point
WL009 Well W009
Sample type
Routine
Lab sample
120627-002RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 26, 2012 15:00, sampling point WL009 Combined Uranium 4006 EPA method 200.8 Not recorded
Collected
Jun 4, 2012 01:15
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
120605-019VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Dichloromethane 2964 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Benzene 2990 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Toluene 2991 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:15, sampling point TF082 Styrene 2996 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Collected
Jun 4, 2012 02:17
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
120605-018VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Benzene 2990 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Toluene 2991 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 02:17, sampling point TF081 Styrene 2996 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Collected
May 21, 2012 13:15
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
120522-066
Laboratory
Radiation Safety Engineering
0.8 pci/l , sample collected May 21, 2012 13:15, sampling point TF081 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.35 pci/l Minimum Reporting Level , sample collected May 21, 2012 13:15, sampling point TF081 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.194 pci/l Minimum Reporting Level , sample collected May 21, 2012 13:15, sampling point TF081 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.35 pci/l Minimum Reporting Level , sample collected May 21, 2012 13:15, sampling point TF081 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
May 21, 2012 13:40
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
120522-065
Laboratory
Radiation Safety Engineering
1.1 pci/l , sample collected May 21, 2012 13:40, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected May 21, 2012 13:40, sampling point TF080 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.253 pci/l Minimum Reporting Level , sample collected May 21, 2012 13:40, sampling point TF080 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected May 21, 2012 13:40, sampling point TF080 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
May 21, 2012 12:52
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
120522-095RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2012 12:52, sampling point TF082 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012
Collected
May 21, 2012 13:18
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
120522-066RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 21, 2012 13:18, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012

Routine (10).