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 61–70 of 439 samples, newest first — collected September 12, 2023 to January 9, 2024. The summary above covers all 439.

44 results from the 10 samples listed here: 8 detected, 36 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 61 to 70 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 Jan 9, 2024 13:35 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample RU-240110-022 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 9, 2024 13:35, sampling point TF080	Combined Uranium 4006 EPA method 200.8	Jan 1, 2022 – Dec 31, 2030
Collected Jan 9, 2024 14:05 Sampling point TF082 Treatment Facility TF082 Sample type Routine Lab sample NI-240110-005 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 9, 2024 14:05, sampling point TF082	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 9, 2024 14:05, sampling point TF082	Nitrate 1040 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 9, 2024 14:05, sampling point TF082	Nitrite 1041 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Collected Jan 9, 2024 13:50 Sampling point TF081 Treatment Plant 081 Sample type Routine Lab sample NI-240110-004 Laboratory MSDH Lab
3.59 mg/l , sample collected Jan 9, 2024 13:50, sampling point TF081	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
3.59 mg/l , sample collected Jan 9, 2024 13:50, sampling point TF081	Nitrate 1040 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 9, 2024 13:50, sampling point TF081	Nitrite 1041 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Collected Jan 9, 2024 13:45 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-240110-003 Laboratory MSDH Lab
6 mg/l , sample collected Jan 9, 2024 13:45, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
6 mg/l , sample collected Jan 9, 2024 13:45, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 9, 2024 13:45, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Jan 1, 2024 – Mar 31, 2024
Collected Oct 23, 2023 13:58 Sampling point TF082 Treatment Facility TF082 Sample type Routine Lab sample NI-231024-029 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:58, sampling point TF082	Nitrate-Nitrite 1038 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:58, sampling point TF082	Nitrate 1040 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 13:58, sampling point TF082	Nitrite 1041 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Collected Oct 23, 2023 14:15 Sampling point TF081 Treatment Plant 081 Sample type Routine Lab sample NI-231024-028 Laboratory MSDH Lab
3.92 mg/l , sample collected Oct 23, 2023 14:15, sampling point TF081	Nitrate-Nitrite 1038 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
3.92 mg/l , sample collected Oct 23, 2023 14:15, sampling point TF081	Nitrate 1040 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 14:15, sampling point TF081	Nitrite 1041 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Collected Oct 23, 2023 14:11 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-231024-030 Laboratory MSDH Lab
6.39 mg/l , sample collected Oct 23, 2023 14:11, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
6.39 mg/l , sample collected Oct 23, 2023 14:11, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 23, 2023 14:11, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Oct 1, 2023 – Dec 31, 2023
Collected Oct 16, 2023 13:30 Sampling point TF082 Treatment Facility TF082 Sample type Routine Lab sample CN-231017-006 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 16, 2023 13:30, sampling point TF082	Cyanide 1024 EPA method QC10204001X	Oct 1, 2023 – Dec 31, 2023
Collected Oct 9, 2023 12:10 Sampling point TF082 Treatment Facility TF082 Sample type Routine Lab sample VO-231010-005 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Xylenes, Total 2955 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Dichloromethane 2964 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	O-Dichlorobenzene 2968 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	P-Dichlorobenzene 2969 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Vinyl Chloride 2976 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	1,1-Dichloroethylene 2977 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	1,2-Dichloroethane 2980 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	1,1,1-Trichloroethane 2981 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Carbon Tetrachloride 2982 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	1,2-Dichloropropane 2983 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Trichloroethylene 2984 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	1,1,2-Trichloroethane 2985 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Tetrachloroethylene 2987 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Chlorobenzene 2989 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Benzene 2990 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Toluene 2991 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Ethylbenzene 2992 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Oct 9, 2023 12:10, sampling point TF082	Styrene 2996 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Collected Sep 12, 2023 12:15 Sampling point TF082 Treatment Facility TF082 Sample type Routine Lab sample NI-230913-004 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 12, 2023 12:15, sampling point TF082	Nitrate-Nitrite 1038 EPA method QC10107041C	Jul 1, 2023 – Sep 30, 2023
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Sep 12, 2023 12:15, sampling point TF082	Nitrate 1040 EPA method QC10107041C	Jul 1, 2023 – Sep 30, 2023
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Sep 12, 2023 12:15, sampling point TF082	Nitrite 1041 EPA method QC10107041C	Jul 1, 2023 – Sep 30, 2023

Collected
Jan 9, 2024 13:35

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
RU-240110-022

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2030
- Combined Uranium 4006 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Jan 9, 2024 14:05

Sampling point
TF082 Treatment Facility TF082

Sample type
Routine

Lab sample
NI-240110-005

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2024 – Mar 31, 2024
- 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
Jan 9, 2024 13:50

Sampling point
TF081 Treatment Plant 081

Sample type
Routine

Lab sample
NI-240110-004

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2024 – Mar 31, 2024
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  3.59 mg/l
- Nitrate 1040 EPA method QC10107041C
  
  Result
  3.59 mg/l
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Jan 9, 2024 13:45

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-240110-003

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2024 – Mar 31, 2024
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  6 mg/l
- Nitrate 1040 EPA method QC10107041C
  
  Result
  6 mg/l
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Oct 23, 2023 13:58

Sampling point
TF082 Treatment Facility TF082

Sample type
Routine

Lab sample
NI-231024-029

Laboratory
MSDH Lab

Monitoring period
Oct 1, 2023 – Dec 31, 2023
- 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
Oct 23, 2023 14:15

Sampling point
TF081 Treatment Plant 081

Sample type
Routine

Lab sample
NI-231024-028

Laboratory
MSDH Lab

Monitoring period
Oct 1, 2023 – Dec 31, 2023
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  3.92 mg/l
- Nitrate 1040 EPA method QC10107041C
  
  Result
  3.92 mg/l
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Oct 23, 2023 14:11

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-231024-030

Laboratory
MSDH Lab

Monitoring period
Oct 1, 2023 – Dec 31, 2023
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  6.39 mg/l
- Nitrate 1040 EPA method QC10107041C
  
  Result
  6.39 mg/l
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Oct 16, 2023 13:30

Sampling point
TF082 Treatment Facility TF082

Sample type
Routine

Lab sample
CN-231017-006

Laboratory
MSDH Lab

Monitoring period
Oct 1, 2023 – Dec 31, 2023
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Oct 9, 2023 12:10

Sampling point
TF082 Treatment Facility TF082

Sample type
Routine

Lab sample
VO-231010-005

Laboratory
MSDH Lab

Monitoring period
Oct 1, 2023 – Dec 31, 2023
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Sep 12, 2023 12:15

Sampling point
TF082 Treatment Facility TF082

Sample type
Routine

Lab sample
NI-230913-004

Laboratory
MSDH Lab

Monitoring period
Jul 1, 2023 – Sep 30, 2023
- 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

Routine (10).