Chemical and radiological sample results

MS0100009 ·, Town of Weir

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 18 samples, newest first — collected September 9, 2025 to February 11, 2026. The summary above covers all 18.

30 results from the 10 samples listed here: 21 detected, 9 not detected. Across the whole record it is 388 of 855. 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 9 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 The location on record identifies a private home, and we do not publish those.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

  Feb 11, 2026 11:00

  Sampling point

  SM4 Location withheld

  Sample type

  Routine

  Lab sample

  810-180858-1

  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

    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

    Jan 1, 2026 – Dec 31, 2026

  • 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

    0.63 ug/l

    Monitoring period

    Not recorded

  • Bromodichloromethane 2943 EPA method 524.2

    Result

    0.55 ug/l

    Monitoring period

    Not recorded

  • Dibromochloromethane 2944 EPA method 524.2

    Result

    0.95 ug/l

    Monitoring period

    Not recorded

  • TTHM 2950 EPA method 524.2

    Result

    2.13 ug/l

    Monitoring period

    Jan 1, 2026 – Dec 31, 2026

• Collected

  Feb 11, 2026 11:00

  Sampling point

  TF080 Treatment Plant T080

  Sample type

  Routine

  Lab sample

  NI-260212-001

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2026 – Dec 31, 2026

  • Nitrate-Nitrite 1038 EPA method QC10107041C

    Result

    0.485 mg/l

  • Nitrate 1040 EPA method QC10107041C

    Result

    0.485 mg/l

  • Nitrite 1041 EPA method QC10107041C

    Result

    Not detected below 0.02 mg/l Minimum Reporting Level

• Collected

  Sep 9, 2025 06:15

  Sampling point

  LC0009 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-098

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.148 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.5 ug/l

• Collected

  Sep 9, 2025 07:15

  Sampling point

  LC0014 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-097

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0755 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.5 ug/l

• Collected

  Sep 9, 2025 08:03

  Sampling point

  LC0012 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-101

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.537 mg/l

  • Lead 1030 EPA method 200.8

    Result

    1.1 ug/l

• Collected

  Sep 9, 2025 06:00

  Sampling point

  LC0004 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-100

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.387 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.9 ug/l

• Collected

  Sep 9, 2025 07:14

  Sampling point

  LC0001 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-103

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.526 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

• Collected

  Sep 9, 2025 06:30

  Sampling point

  LC0011 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-099

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.199 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.5 ug/l

• Collected

  Sep 9, 2025 07:00

  Sampling point

  LC0020 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-102

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.386 mg/l

  • Lead 1030 EPA method 200.8

    Result

    2.1 ug/l

• Collected

  Sep 9, 2025 06:50

  Sampling point

  LC0017 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250910-105

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.496 mg/l

  • Lead 1030 EPA method 200.8

    Result

    1.4 ug/l

Routine (10).