Chemical and radiological sample results

MS0530014 ·, Oktoc Water Association #1

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.

Scroll the table sideways for the dates.

The most recent samples, result by result

The table below lists 1–10 of 14 samples, newest first — collected November 6, 2024 to August 3, 2026. The summary above covers all 14.

67 results from the 10 samples listed here: 25 detected, 42 not detected. Across the whole record it is 249 of 1,490. 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 2 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 The location on record identifies a private home, and we do not publish those.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.

• Collected

  Aug 3, 2026

  Sampling point

  TF104 Treatment Facility TF104

  Sample type

  Routine

  Lab sample

  35055450002

  Laboratory

  Pace Analytical Services, LLC

  • Nitrate-Nitrite 1038

    Result

    Not detected below 0.05 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Nitrate 1040 EPA method 353.2

    Result

    Not detected below 0.05 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Nitrite 1041 EPA method 353.2

    Result

    Not detected below 0.05 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Sodium 1052 EPA method 200.7

    Result

    32800 ug/l

    Monitoring period

    Jan 1, 2024 – Dec 31, 2026

• Collected

  Aug 3, 2026

  Sampling point

  TF103 Treatment Facility TF103

  Sample type

  Routine

  Lab sample

  35055450001

  Laboratory

  Pace Analytical Services, LLC

  • Nitrate-Nitrite 1038

    Result

    Not detected below 0.05 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Nitrate 1040 EPA method 353.2

    Result

    Not detected below 0.05 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Nitrite 1041 EPA method 353.2

    Result

    Not detected below 0.05 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Sodium 1052 EPA method 200.7

    Result

    32900 ug/l

    Monitoring period

    Jan 1, 2024 – Dec 31, 2026

• Collected

  Jun 23, 2026 09:30

  Sampling point

  DS000 Distribution

  Sample type

  Routine

  Lab sample

  810-197288-1

  Laboratory

  Eurofins Eaton Analytical South Bend in

  Monitoring period

  Not recorded

  • Monochloroacetic Acid 2450 EPA method 552.2

    Result

    Not detected below 2 ug/l Minimum Reporting Level

  • Dichloroacetic Acid 2451 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

  • Trichloroacetic Acid 2452 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

  • Monobromoacetic Acid 2453 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

  • Dibromoacetic Acid 2454 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    Not detected below 2 ug/l Minimum Reporting Level

• Collected

  Apr 1, 2025 10:55

  Sampling point

  TF104 Treatment Facility TF104

  Sample type

  Routine

  Lab sample

  NI-250402-029

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • Nitrate-Nitrite 1038 EPA method QC10107041C

    Result

    0.197 mg/l

  • Nitrate 1040 EPA method QC10107041C

    Result

    Not detected below 0.08 mg/l Minimum Reporting Level

  • Nitrite 1041 EPA method QC10107041C

    Result

    0.159 mg/l

• Collected

  Apr 1, 2025 10:35

  Sampling point

  TF103 Treatment Facility TF103

  Sample type

  Routine

  Lab sample

  NI-250402-028

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • Nitrate-Nitrite 1038 EPA method QC10107041C

    Result

    0.197 mg/l

  • Nitrate 1040 EPA method QC10107041C

    Result

    Not detected below 0.08 mg/l Minimum Reporting Level

  • Nitrite 1041 EPA method QC10107041C

    Result

    0.158 mg/l

• Collected

  Apr 1, 2025 10:00

  Sampling point

  TF101 Treatment Plant T101

  Sample type

  Routine

  Lab sample

  NI-250402-027

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • Nitrate-Nitrite 1038 EPA method QC10107041C

    Result

    0.195 mg/l

  • Nitrate 1040 EPA method QC10107041C

    Result

    Not detected below 0.08 mg/l Minimum Reporting Level

  • Nitrite 1041 EPA method QC10107041C

    Result

    0.156 mg/l

• Collected

  Mar 6, 2025 10:00

  Sampling point

  SM2 Location withheld

  Sample type

  Routine

  Lab sample

  810-140616-2

  Laboratory

  Eurofins Eaton Analytical South Bend in

  • Monochloroacetic Acid 2450 EPA method 552.2

    Result

    Not detected below 2 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dichloroacetic Acid 2451 EPA method 552.2

    Result

    1.9 ug/l

    Monitoring period

    Not recorded

  • Trichloroacetic Acid 2452 EPA method 552.2

    Result

    4.6 ug/l

    Monitoring period

    Not recorded

  • Monobromoacetic Acid 2453 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dibromoacetic Acid 2454 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    6.5 ug/l

    Monitoring period

    Jan 1, 2025 – Mar 31, 2025

  • Chloroform 2941 EPA method 524.2

    Result

    1.8 ug/l

    Monitoring period

    Not recorded

  • Bromoform 2942 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Bromodichloromethane 2943 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dibromochloromethane 2944 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • TTHM 2950 EPA method 524.2

    Result

    1.8 ug/l

    Monitoring period

    Jan 1, 2025 – Mar 31, 2025

• Collected

  Mar 6, 2025 09:00

  Sampling point

  SM1 Location withheld

  Sample type

  Routine

  Lab sample

  810-140616-1

  Laboratory

  Eurofins Eaton Analytical South Bend in

  • Monochloroacetic Acid 2450 EPA method 552.2

    Result

    Not detected below 2 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dichloroacetic Acid 2451 EPA method 552.2

    Result

    1.9 ug/l

    Monitoring period

    Not recorded

  • Trichloroacetic Acid 2452 EPA method 552.2

    Result

    4.6 ug/l

    Monitoring period

    Not recorded

  • Monobromoacetic Acid 2453 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dibromoacetic Acid 2454 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    6.5 ug/l

    Monitoring period

    Jan 1, 2025 – Mar 31, 2025

  • Chloroform 2941 EPA method 524.2

    Result

    1.7 ug/l

    Monitoring period

    Not recorded

  • Bromoform 2942 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Bromodichloromethane 2943 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dibromochloromethane 2944 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • TTHM 2950 EPA method 524.2

    Result

    1.7 ug/l

    Monitoring period

    Jan 1, 2025 – Mar 31, 2025

• Collected

  Dec 4, 2024 10:00

  Sampling point

  TF104 Treatment Facility TF104

  Sample type

  Routine

  Lab sample

  IN-241205-001

  Laboratory

  MSDH Lab

  • Arsenic 1005 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Barium 1010 EPA method 200.8

    Result

    0.06 mg/l

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Cadmium 1015 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Chromium 1020 EPA method 200.8

    Result

    0.0005 mg/l

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Fluoride 1025 EPA method QC 10-109-12-2-A

    Result

    0.139 mg/l

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Mercury 1035 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Nickel 1036 EPA method 200.8

    Result

    0.0006 mg/l

    Monitoring period

    Not recorded

  • Selenium 1045 EPA method 200.8

    Result

    Not detected below 0.0025 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Antimony, Total 1074 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Beryllium, Total 1075 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

  • Thallium, Total 1085 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jan 1, 2022 – Dec 31, 2024

• Collected

  Nov 6, 2024 11:00

  Sampling point

  SM2 Location withheld

  Sample type

  Routine

  Lab sample

  810-127144-2

  Laboratory

  Eurofins Eaton Analytical South Bend in

  • Monochloroacetic Acid 2450 EPA method 552.2

    Result

    Not detected below 2 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dichloroacetic Acid 2451 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Trichloroacetic Acid 2452 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Monobromoacetic Acid 2453 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dibromoacetic Acid 2454 EPA method 552.2

    Result

    Not detected below 1 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    Not detected below 2 ug/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2024 – Dec 31, 2024

  • Chloroform 2941 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Bromoform 2942 EPA method 524.2

    Result

    0.53 ug/l

    Monitoring period

    Not recorded

  • Bromodichloromethane 2943 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Dibromochloromethane 2944 EPA method 524.2

    Result

    0.5 ug/l

    Monitoring period

    Not recorded

  • TTHM 2950 EPA method 524.2

    Result

    1.03 ug/l

    Monitoring period

    Oct 1, 2024 – Dec 31, 2024

Routine (10).