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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Coliform and microbial samples

MS0490010 , City of Winona

14 of 2,346 results on record were positive for coliform or another organism the agency tests for. The most recent was May 6, 2024.

They fall across 14 of the 1,805 samples on record.

Every sample on record, October 15, 2003 to August 4, 2026. These figures cover the whole record; the list of samples further down is narrowed.

This system’s violations

The most recent samples

Showing samples collected between September 26, 2024 and September 26, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

Choose a date range

The list below shows 46–60 of 138 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Winona, 46 to 60 of 138 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jan 11, 2026 15:10
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14123
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 11, 2026 15:10, sampling point TC0013 Coliform (TCR)
Absence , sample collected Jan 11, 2026 15:10, sampling point TC0013 E. Coli
Collected
Jan 11, 2026 15:21
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14124
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 11, 2026 15:21, sampling point TC0014 Coliform (TCR)
Absence , sample collected Jan 11, 2026 15:21, sampling point TC0014 E. Coli
Collected
Jan 11, 2026 15:45
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14125
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 11, 2026 15:45, sampling point TC0015 Coliform (TCR)
Absence , sample collected Jan 11, 2026 15:45, sampling point TC0015 E. Coli
Collected
Dec 3, 2025 07:35
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14122
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 07:35, sampling point TC0012 Coliform (TCR)
Absence , sample collected Dec 3, 2025 07:35, sampling point TC0012 E. Coli
Collected
Dec 3, 2025 07:05
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14120
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 07:05, sampling point TC0019 Coliform (TCR)
Absence , sample collected Dec 3, 2025 07:05, sampling point TC0019 E. Coli
Collected
Dec 3, 2025 07:22
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14121
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 07:22, sampling point TC0020 Coliform (TCR)
Absence , sample collected Dec 3, 2025 07:22, sampling point TC0020 E. Coli
Collected
Dec 2, 2025 14:05
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14117
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 2, 2025 14:05, sampling point TC0016 Coliform (TCR)
Absence , sample collected Dec 2, 2025 14:05, sampling point TC0016 E. Coli
Collected
Dec 2, 2025 15:22
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14118
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 2, 2025 15:22, sampling point TC0017 Coliform (TCR)
Absence , sample collected Dec 2, 2025 15:22, sampling point TC0017 E. Coli
Collected
Dec 2, 2025 15:41
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14119
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 2, 2025 15:41, sampling point TC0018 Coliform (TCR)
Absence , sample collected Dec 2, 2025 15:41, sampling point TC0018 E. Coli
Collected
Nov 12, 2025 07:20
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14113
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 12, 2025 07:20, sampling point TC0016 Coliform (TCR)
Absence , sample collected Nov 12, 2025 07:20, sampling point TC0016 E. Coli
Collected
Nov 12, 2025 07:33
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14112
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 12, 2025 07:33, sampling point TC0017 Coliform (TCR)
Absence , sample collected Nov 12, 2025 07:33, sampling point TC0017 E. Coli
Collected
Nov 12, 2025 07:51
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14111
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 12, 2025 07:51, sampling point TC0018 Coliform (TCR)
Absence , sample collected Nov 12, 2025 07:51, sampling point TC0018 E. Coli
Collected
Nov 11, 2025 15:20
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14114
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 11, 2025 15:20, sampling point TC0013 Coliform (TCR)
Absence , sample collected Nov 11, 2025 15:20, sampling point TC0013 E. Coli
Collected
Nov 11, 2025 15:40
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14115
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 11, 2025 15:40, sampling point TC0014 Coliform (TCR)
Absence , sample collected Nov 11, 2025 15:40, sampling point TC0014 E. Coli
Collected
Nov 11, 2025 15:59
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14116
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 11, 2025 15:59, sampling point TC0015 Coliform (TCR)
Absence , sample collected Nov 11, 2025 15:59, sampling point TC0015 E. Coli