Chemical and radiological sample results

MS0050017 ·, North Benton W/A

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.

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 1–10 of 213 samples, newest first — collected August 13, 2024 to June 9, 2026. The summary above covers all 213.

44 results from the 10 samples listed here: 18 detected, 26 not detected. Across the whole record it is 330 of 1,481. 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 The location on record identifies a private home, and we do not publish those.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

  Jun 9, 2026

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  35042862001

  Laboratory

  Pace Analytical Services, LLC

  Monitoring period

  Apr 1, 2026 – Jun 30, 2026

  • Arsenic 1005 EPA method 200.8

    Result

    10.4 ug/l

  • Barium 1010 EPA method 200.8

    Result

    37.9 ug/l

  • Cadmium 1015 EPA method 200.8

    Result

    Not detected below 0.2 ug/l Minimum Reporting Level

  • Chromium 1020 EPA method 200.8

    Result

    Not detected below 2 ug/l Minimum Reporting Level

  • Fluoride 1025 EPA method 300.0

    Result

    0.12 mg/l

  • Mercury 1035 EPA method 245.1

    Result

    0.38 ug/l

  • Selenium 1045 EPA method 200.8

    Result

    Not detected below 1 ug/l Minimum Reporting Level

  • Antimony, Total 1074 EPA method 200.8

    Result

    Not detected below 1 ug/l Minimum Reporting Level

  • Beryllium, Total 1075 EPA method 200.8

    Result

    Not detected below 0.1 ug/l Minimum Reporting Level

  • Thallium, Total 1085 EPA method 200.8

    Result

    Not detected below 1 ug/l Minimum Reporting Level

• Collected

  Feb 2, 2026 12:30

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  NI-260203-008

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2026 – Dec 31, 2026

  • 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

  Dec 8, 2025 12:30

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  IN-251209-002

  Laboratory

  MSDH Lab

  • Arsenic 1005 EPA method 200.8

    Result

    0.0059 mg/l

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Barium 1010 EPA method 200.8

    Result

    0.034 mg/l

    Monitoring period

    Not recorded

  • Cadmium 1015 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Chromium 1020 EPA method 200.8

    Result

    0.0005 mg/l

    Monitoring period

    Not recorded

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

    Result

    0.14 mg/l

    Monitoring period

    Not recorded

  • Mercury 1035 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Nickel 1036 EPA method 200.8

    Result

    0.0009 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

    Not recorded

  • Antimony, Total 1074 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Beryllium, Total 1075 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Thallium, Total 1085 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

• Collected

  May 5, 2025 12:00

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  CN-250506-001

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Cyanide 1024 EPA method QC10204001X

    Result

    Not detected below 0.015 mg/l Minimum Reporting Level

• Collected

  Apr 14, 2025 13:00

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  IN-250415-002

  Laboratory

  MSDH Lab

  • Arsenic 1005 EPA method 200.8

    Result

    0.0061 mg/l

    Monitoring period

    Apr 1, 2025 – Jun 30, 2025

  • Barium 1010 EPA method 200.8

    Result

    0.0362 mg/l

    Monitoring period

    Not recorded

  • Cadmium 1015 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Chromium 1020 EPA method 200.8

    Result

    0.0055 mg/l

    Monitoring period

    Not recorded

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

    Result

    0.136 mg/l

    Monitoring period

    Not recorded

  • Mercury 1035 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Nickel 1036 EPA method 200.8

    Result

    0.0043 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

    Not recorded

  • Antimony, Total 1074 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Beryllium, Total 1075 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

  • Thallium, Total 1085 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Not recorded

• Collected

  Feb 3, 2025 12:15

  Sampling point

  SM2 Location withheld

  Sample type

  Routine

  Lab sample

  HA-250204-007

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    1.44 ug/l

• Collected

  Feb 3, 2025 12:15

  Sampling point

  SM2 Location withheld

  Sample type

  Routine

  Lab sample

  TH-250204-007

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • TTHM 2950 EPA method 524.2

    Result

    1.1 ug/l

• Collected

  Jan 13, 2025 12:06

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  NI-250114-016

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • 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 14, 2024 10:50

  Sampling point

  TF080

  Sample type

  Routine

  Lab sample

  NA-241015-027

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2022 – Dec 31, 2024

  • Sodium 1052 EPA method 200.7

    Result

    37 mg/l

• Collected

  Aug 13, 2024 06:00

  Sampling point

  LC0016 Location withheld

  Sample type

  Routine

  Lab sample

  PB-240815-088

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2022 – Dec 31, 2024

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0194 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

Routine (10).