Chemical and radiological sample results

MS0170019 ·, Walls Water Association

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 August 14, 2025 to June 22, 2026. The summary above covers all 18.

27 results from the 10 samples listed here: 14 detected, 13 not detected. Across the whole record it is 296 of 1,687. 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 5 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 The location on record identifies a private home, and we do not publish those.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 22, 2026

  Sampling point

  TF102 Treatment Plant 102

  Sample type

  Routine

  Lab sample

  35045785002

  Laboratory

  Pace Analytical Services, LLC

  Monitoring period

  Jan 1, 2026 – Dec 31, 2031

  • Fluoride 1025 EPA method 300.0

    Result

    0.065 mg/l

• Collected

  Jan 22, 2026 09:30

  Sampling point

  SM4 Location withheld

  Sample type

  Routine

  Lab sample

  810-178980-1

  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

    1.9 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

    1.1 ug/l

    Monitoring period

    Not recorded

  • Dibromochloromethane 2944 EPA method 524.2

    Result

    0.59 ug/l

    Monitoring period

    Not recorded

  • TTHM 2950 EPA method 524.2

    Result

    3.59 ug/l

    Monitoring period

    Jan 1, 2026 – Dec 31, 2026

• Collected

  Sep 23, 2025 08:30

  Sampling point

  LC004 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250924-147

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.131 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

• Collected

  Sep 23, 2025 08:15

  Sampling point

  LC0006 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250924-148

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0059 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

• Collected

  Sep 23, 2025 08:10

  Sampling point

  LC0002 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250924-146

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.356 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.8 ug/l

• Collected

  Aug 19, 2025 10:10

  Sampling point

  TF102 Treatment Plant 102

  Sample type

  Routine

  Lab sample

  CN-250820-009

  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

  Aug 14, 2025 09:49

  Sampling point

  LC0006 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250815-005

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.167 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

• Collected

  Aug 14, 2025 10:05

  Sampling point

  LC0002 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250815-002

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.177 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

• Collected

  Aug 14, 2025 10:00

  Sampling point

  LC0007 Location withheld

  Sample type

  Routine

  Lab sample

  PB-250815-004

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0408 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.6 ug/l

• Collected

  Aug 14, 2025 09:00

  Sampling point

  DS000 Distribution

  Sample type

  Routine

  Lab sample

  PB-250815-006

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2023 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0282 mg/l

  • Lead 1030 EPA method 200.8

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

Routine (10).