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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

29 of the 98 analytes this system has been tested for have been detected at least once, across 440 samples on record.

The other 69 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 440 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 19 of 21 results Aug 16, 2004 May 21, 2026
Nickel 1036 Inorganic Chemical 17 of 25 results Mar 22, 2004 Apr 7, 2025
Bromodichloromethane 2943 Organic Chemical 14 of 15 results Sep 10, 2007 May 21, 2026
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
Dibromochloromethane 2944 Organic Chemical 13 of 15 results Sep 10, 2007 May 21, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 11 of 14 results Mar 14, 2012 Oct 15, 2018
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 21 results Jul 6, 2010 May 21, 2026
Fluoride 1025 Inorganic Chemical 9 of 25 results Apr 10, 2006 Apr 7, 2025
Chloroform 2941 Organic Chemical 8 of 15 results Sep 10, 2007 May 21, 2026
Bromoform 2942 Organic Chemical 7 of 15 results Jul 6, 2010 May 21, 2026
Sodium 1052 Inorganic Chemical 5 of 5 results Sep 17, 2019 Jul 22, 2026
Dibromoacetic Acid 2454 Organic Chemical 4 of 14 results Sep 4, 2013 May 21, 2026
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
Dichloroacetic Acid 2451 Organic Chemical 1 of 14 results May 21, 2026 May 21, 2026
Trichloroacetic Acid 2452 Organic Chemical 1 of 14 results May 21, 2026 May 21, 2026
Xylenes, Total 2955 Organic Chemical 1 of 29 results Nov 29, 2022 Nov 29, 2022
Monobromoacetic Acid 2453 Organic Chemical 1 of 14 results Oct 12, 2020 Oct 12, 2020
Monochloroacetic Acid 2450 Organic Chemical 1 of 14 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 421–430 of 440 samples, newest first — collected November 1, 2004 to September 6, 2007. The summary above covers all 440.

58 results from the 10 samples listed here: 13 detected, 45 not detected. Across the whole record it is 591 of 1,989. 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 421 to 430 of 440 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
Sep 6, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070907-084PB
Laboratory
MSDH Lab
0.0037 mg/l , sample collected Sep 6, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 6, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Jul 11, 2007
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
070712-039NI
Laboratory
MSDH Lab
3.45 mg/l , sample collected Jul 11, 2007, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
3.45 mg/l , sample collected Jul 11, 2007, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 11, 2007, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Collected
Nov 29, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
061130-005NI
Laboratory
MSDH Lab
3.57 mg/l , sample collected Nov 29, 2006, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
3.57 mg/l , sample collected Nov 29, 2006, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 29, 2006, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Collected
Apr 10, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060411-074CN
Laboratory
MSDH Lab
0.00574 mg/l , sample collected Apr 10, 2006, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Apr 10, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060411-073IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.036225 mg/l , sample collected Apr 10, 2006, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.562625 mg/l , sample collected Apr 10, 2006, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000898 mg/l , sample collected Apr 10, 2006, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 10, 2006, sampling point TF080 Uranium-238 4009 Not recorded
Collected
Sep 26, 2005
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
050927-001NI
Laboratory
MSDH Lab
4.56 mg/l , sample collected Sep 26, 2005, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
4.56 mg/l , sample collected Sep 26, 2005, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Sep 26, 2005, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Collected
Apr 18, 2005
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
050419-101CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Apr 18, 2005
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
050419-137IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.034271 mg/l , sample collected Apr 18, 2005, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000839 mg/l , sample collected Apr 18, 2005, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 18, 2005, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Collected
Dec 7, 2004
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
041208-031VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Benzene 2990 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Toluene 2991 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Dec 7, 2004, sampling point TF080 Styrene 2996 EPA method 524.2 Oct 1, 2004 – Dec 31, 2004
Collected
Nov 1, 2004
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
041102-106IN
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 1, 2004, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2002 – Dec 31, 2004

Routine (10).