Chemical and radiological sample results

MS0360017 ·, Yocona Water Association, Inc.

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 11–20 of 32 samples, newest first — collected July 23, 2025 to October 13, 2025. The summary above covers all 32.

77 results from the 10 samples listed here: 12 detected, 65 not detected. Across the whole record it is 215 of 1,659. 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 3 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 The location on record identifies a private home, and we do not publish those.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

  Oct 13, 2025 12:00

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  IN-251014-001

  Laboratory

  MSDH Lab

  • Arsenic 1005 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Barium 1010 EPA method 200.8

    Result

    0.025 mg/l

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Cadmium 1015 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Chromium 1020 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

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

    Result

    Not detected below 0.1 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Mercury 1035 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • 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

    Oct 1, 2025 – Dec 31, 2025

  • Antimony, Total 1074 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Beryllium, Total 1075 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

  • Thallium, Total 1085 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Oct 1, 2025 – Dec 31, 2025

• Collected

  Oct 13, 2025 12:20

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  NI-251014-001

  Laboratory

  MSDH Lab

  Monitoring period

  Oct 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 13, 2025 12:15

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  VO-251014-001

  Laboratory

  MSDH Lab

  Monitoring period

  Oct 1, 2025 – Dec 31, 2025

  • 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 26, 2025 13:20

  Sampling point

  LC0017 Location withheld

  Sample type

  Routine

  Lab sample

  PB-251001-082

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0085 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.6 ug/l

• Collected

  Sep 25, 2025 06:45

  Sampling point

  LC0014 Location withheld

  Sample type

  Routine

  Lab sample

  PB-251001-076

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.0384 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.6 ug/l

• Collected

  Sep 18, 2025 08:27

  Sampling point

  LC0015 Location withheld

  Sample type

  Routine

  Lab sample

  PB-251001-078

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2025 – Dec 31, 2025

  • Copper, Free 1022 EPA method 200.8

    Result

    0.308 mg/l

  • Lead 1030 EPA method 200.8

    Result

    0.6 ug/l

• Collected

  Sep 10, 2025 12:05

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  CN-250911-012

  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

  Jul 23, 2025 12:20

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  IN-250724-001

  Laboratory

  MSDH Lab

  • Arsenic 1005 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Barium 1010 EPA method 200.8

    Result

    0.0301 mg/l

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Cadmium 1015 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Chromium 1020 EPA method 200.8

    Result

    0.0006 mg/l

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

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

    Result

    0.105 mg/l

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Mercury 1035 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Nickel 1036 EPA method 200.8

    Result

    0.0012 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

    Jul 1, 2025 – Sep 30, 2025

  • Antimony, Total 1074 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Beryllium, Total 1075 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

  • Thallium, Total 1085 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

    Monitoring period

    Jul 1, 2025 – Sep 30, 2025

• Collected

  Jul 23, 2025 12:15

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  NI-250724-001

  Laboratory

  MSDH Lab

  Monitoring period

  Jul 1, 2025 – Sep 30, 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

  Jul 23, 2025 12:30

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  VO-250724-001

  Laboratory

  MSDH Lab

  Monitoring period

  Jul 1, 2025 – Sep 30, 2025

  • 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

Routine (10).