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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. No date range is applied.

This system’s violations

The most recent samples

No date range is applied: this list draws on every sample on record. Show the last two years only.

The list below shows 16–30 of 1,805 samples on record, newest first.

Routine (15).

Coliform and microbial sample results for City of Winona, 16 to 30 of 1,805 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jun 22, 2026 15:58
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14061
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 22, 2026 15:58, sampling point TC0018 Coliform (TCR)
Absence , sample collected Jun 22, 2026 15:58, sampling point TC0018 E. Coli
Collected
Jun 22, 2026 15:39
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14060
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 22, 2026 15:39, sampling point TC0019 Coliform (TCR)
Absence , sample collected Jun 22, 2026 15:39, sampling point TC0019 E. Coli
Collected
Jun 22, 2026 15:18
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14065
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 22, 2026 15:18, sampling point TC0020 Coliform (TCR)
Absence , sample collected Jun 22, 2026 15:18, sampling point TC0020 E. Coli
Collected
May 5, 2026 07:08
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14051
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 5, 2026 07:08, sampling point TC0015 Coliform (TCR)
Absence , sample collected May 5, 2026 07:08, sampling point TC0015 E. Coli
Collected
May 5, 2026 07:25
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14052
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 5, 2026 07:25, sampling point TC0016 Coliform (TCR)
Absence , sample collected May 5, 2026 07:25, sampling point TC0016 E. Coli
Collected
May 5, 2026 07:20
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14053
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 5, 2026 07:20, sampling point TC0017 Coliform (TCR)
Absence , sample collected May 5, 2026 07:20, sampling point TC0017 E. Coli
Collected
May 4, 2026 15:15
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14048
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 4, 2026 15:15, sampling point TC0012 Coliform (TCR)
Absence , sample collected May 4, 2026 15:15, sampling point TC0012 E. Coli
Collected
May 4, 2026 15:27
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14049
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 4, 2026 15:27, sampling point TC0013 Coliform (TCR)
Absence , sample collected May 4, 2026 15:27, sampling point TC0013 E. Coli
Collected
May 4, 2026 15:55
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14050
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 4, 2026 15:55, sampling point TC0014 Coliform (TCR)
Absence , sample collected May 4, 2026 15:55, sampling point TC0014 E. Coli
Collected
Apr 14, 2026 07:10
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14044
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 14, 2026 07:10, sampling point TC0015 Coliform (TCR)
Absence , sample collected Apr 14, 2026 07:10, sampling point TC0015 E. Coli
Collected
Apr 14, 2026 07:28
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14043
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 14, 2026 07:28, sampling point TC0016 Coliform (TCR)
Absence , sample collected Apr 14, 2026 07:28, sampling point TC0016 E. Coli
Collected
Apr 14, 2026 07:40
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14042
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 14, 2026 07:40, sampling point TC0017 Coliform (TCR)
Absence , sample collected Apr 14, 2026 07:40, sampling point TC0017 E. Coli
Collected
Apr 13, 2026 15:25
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14046
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 13, 2026 15:25, sampling point TC0013 Coliform (TCR)
Absence , sample collected Apr 13, 2026 15:25, sampling point TC0013 E. Coli
Collected
Apr 13, 2026 15:50
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14045
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 13, 2026 15:50, sampling point TC0014 Coliform (TCR)
Absence , sample collected Apr 13, 2026 15:50, sampling point TC0014 E. Coli
Collected
Apr 13, 2026 15:18
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250318-14047
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 13, 2026 15:18, sampling point TC0020 Coliform (TCR)
Absence , sample collected Apr 13, 2026 15:18, sampling point TC0020 E. Coli