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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 91–105 of 138 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Winona, 91 to 105 of 138 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
May 6, 2025 07:46
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14089
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 6, 2025 07:46, sampling point TC0012 Coliform (TCR)
Absence , sample collected May 6, 2025 07:46, sampling point TC0012 E. Coli
Collected
May 6, 2025 07:18
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14087
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 6, 2025 07:18, sampling point TC0019 Coliform (TCR)
Absence , sample collected May 6, 2025 07:18, sampling point TC0019 E. Coli
Collected
May 6, 2025 07:30
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14088
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 6, 2025 07:30, sampling point TC0020 Coliform (TCR)
Absence , sample collected May 6, 2025 07:30, sampling point TC0020 E. Coli
Collected
May 5, 2025 15:10
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14085
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 5, 2025 15:10, sampling point TC0016 Coliform (TCR)
Absence , sample collected May 5, 2025 15:10, sampling point TC0016 E. Coli
Collected
May 5, 2025 15:29
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14090
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 5, 2025 15:29, sampling point TC0017 Coliform (TCR)
Absence , sample collected May 5, 2025 15:29, sampling point TC0017 E. Coli
Collected
May 5, 2025 15:45
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14086
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 5, 2025 15:45, sampling point TC0018 Coliform (TCR)
Absence , sample collected May 5, 2025 15:45, sampling point TC0018 E. Coli
Collected
Apr 8, 2025 07:45
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6010
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 8, 2025 07:45, sampling point TC0012 Coliform (TCR)
Absence , sample collected Apr 8, 2025 07:45, sampling point TC0012 E. Coli
Collected
Apr 8, 2025 07:09
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6008
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 8, 2025 07:09, sampling point TC0019 Coliform (TCR)
Absence , sample collected Apr 8, 2025 07:09, sampling point TC0019 E. Coli
Collected
Apr 8, 2025 07:28
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6009
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 8, 2025 07:28, sampling point TC0020 Coliform (TCR)
Absence , sample collected Apr 8, 2025 07:28, sampling point TC0020 E. Coli
Collected
Apr 7, 2025 15:10
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6005
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 7, 2025 15:10, sampling point TC0016 Coliform (TCR)
Absence , sample collected Apr 7, 2025 15:10, sampling point TC0016 E. Coli
Collected
Apr 7, 2025 15:26
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6006
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 7, 2025 15:26, sampling point TC0017 Coliform (TCR)
Absence , sample collected Apr 7, 2025 15:26, sampling point TC0017 E. Coli
Collected
Apr 7, 2025 15:50
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6007
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 7, 2025 15:50, sampling point TC0018 Coliform (TCR)
Absence , sample collected Apr 7, 2025 15:50, sampling point TC0018 E. Coli
Collected
Mar 10, 2025 07:10
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-5999
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2025 – Mar 31, 2025
Absence , sample collected Mar 10, 2025 07:10, sampling point TC0017 Coliform (TCR)
Absence , sample collected Mar 10, 2025 07:10, sampling point TC0017 E. Coli
Collected
Mar 10, 2025 07:25
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6000
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2025 – Mar 31, 2025
Absence , sample collected Mar 10, 2025 07:25, sampling point TC0018 Coliform (TCR)
Absence , sample collected Mar 10, 2025 07:25, sampling point TC0018 E. Coli
Collected
Mar 10, 2025 07:49
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-240122-6001
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2025 – Mar 31, 2025
Absence , sample collected Mar 10, 2025 07:49, sampling point TC0019 Coliform (TCR)
Absence , sample collected Mar 10, 2025 07:49, sampling point TC0019 E. Coli