Chemical and radiological sample results

MS0760076 ·, Black Bayou Water Assn.

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 11–20 of 1,097 samples, newest first — collected October 14, 2025 to February 10, 2026. The summary above covers all 1,097.

44 results from the 10 samples listed here: 9 detected, 35 not detected. Across the whole record it is 1,488 of 8,173. 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 The location on record identifies a private home, and we do not publish those.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

  Feb 10, 2026 16:00

  Sampling point

  SMH Location withheld

  Sample type

  Routine

  Lab sample

  810-180637-1

  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

    4.2 ug/l

  • Trichloroacetic Acid 2452 EPA method 552.2

    Result

    1.3 ug/l

  • 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

    1.5 ug/l

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    7 ug/l

  • Chloroform 2941 EPA method 524.2

    Result

    2.6 ug/l

  • Bromoform 2942 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

  • Bromodichloromethane 2943 EPA method 524.2

    Result

    0.93 ug/l

  • Dibromochloromethane 2944 EPA method 524.2

    Result

    Not detected below 0.5 ug/l Minimum Reporting Level

  • TTHM 2950 EPA method 524.2

    Result

    3.53 ug/l

• Collected

  Feb 2, 2026 14:35

  Sampling point

  TF115 Treatment Plant T103

  Sample type

  Routine

  Lab sample

  NI-260203-006

  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

  Feb 2, 2026 14:25

  Sampling point

  TF115 Treatment Plant T103

  Sample type

  Routine

  Lab sample

  RU-260203-001

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2026 – Dec 31, 2034

  • Combined Uranium 4006 EPA method 200.8

    Result

    Not detected below 0.0005 mg/l Minimum Reporting Level

• Collected

  Feb 2, 2026 14:45

  Sampling point

  TF115 Treatment Plant T103

  Sample type

  Routine

  Lab sample

  VO-260203-002

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2026 – Dec 31, 2026

  • 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

  Jan 5, 2026 12:30

  Sampling point

  TF103 Treatmnt Plant T103

  Sample type

  Routine

  Lab sample

  CN-260106-002

  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

  Jan 5, 2026 12:05

  Sampling point

  TF102 Treatment Plant T102

  Sample type

  Routine

  Lab sample

  CN-260106-001

  Laboratory

  MSDH Lab

  Monitoring period

  Jan 1, 2026 – Dec 31, 2031

  • Cyanide 1024 EPA method QC10204001X

    Result

    Not detected below 0.015 mg/l Minimum Reporting Level

• Collected

  Oct 28, 2025 15:20

  Sampling point

  TF101 Treatment Plant T101

  Sample type

  Routine

  Lab sample

  NI-251029-001

  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, 2025 16:30

  Sampling point

  TF115 Treatment Plant T103

  Sample type

  Routine

  Lab sample

  CN-251015-001

  Laboratory

  MSDH Lab

  Monitoring period

  Oct 1, 2025 – Dec 31, 2025

  • Cyanide 1024 EPA method QC10204001X

    Result

    Not detected below 0.015 mg/l Minimum Reporting Level

• Collected

  Oct 14, 2025 12:20

  Sampling point

  SMT Location withheld

  Sample type

  Routine

  Lab sample

  HA-251015-009

  Laboratory

  MSDH Lab

  Monitoring period

  Oct 1, 2025 – Dec 31, 2025

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    8.32 ug/l

• Collected

  Oct 14, 2025 12:45

  Sampling point

  SMH Location withheld

  Sample type

  Routine

  Lab sample

  HA-251015-008

  Laboratory

  MSDH Lab

  Monitoring period

  Oct 1, 2025 – Dec 31, 2025

  • Total Haloacetic Acids (Haa5) 2456 EPA method 552.2

    Result

    8.6 ug/l

Routine (10).