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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

MS0800004 , City of Louisville

3 of 3,330 results on record were positive for coliform or another organism the agency tests for. The most recent was April 15, 2020.

They fall across 3 of the 2,586 samples on record.

Every sample on record, October 6, 2003 to August 12, 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 184 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Louisville, 91 to 105 of 184 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Sep 23, 2025 08:40
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26188
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 23, 2025 08:40, sampling point TC0018 Coliform (TCR)
Absence , sample collected Sep 23, 2025 08:40, sampling point TC0018 E. Coli
Collected
Sep 23, 2025 08:20
Sampling point
TC0022 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26187
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 23, 2025 08:20, sampling point TC0022 Coliform (TCR)
Absence , sample collected Sep 23, 2025 08:20, sampling point TC0022 E. Coli
Collected
Sep 22, 2025 08:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26183
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 22, 2025 08:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Sep 22, 2025 08:30, sampling point TC0003 E. Coli
Collected
Sep 22, 2025 09:40
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26186
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 22, 2025 09:40, sampling point TC0005 Coliform (TCR)
Absence , sample collected Sep 22, 2025 09:40, sampling point TC0005 E. Coli
Collected
Sep 22, 2025 08:50
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26184
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 22, 2025 08:50, sampling point TC0014 Coliform (TCR)
Absence , sample collected Sep 22, 2025 08:50, sampling point TC0014 E. Coli
Collected
Sep 22, 2025 09:15
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26185
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 22, 2025 09:15, sampling point TC0015 Coliform (TCR)
Absence , sample collected Sep 22, 2025 09:15, sampling point TC0015 E. Coli
Collected
Aug 19, 2025 09:05
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26181
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 19, 2025 09:05, sampling point TC0009 Coliform (TCR)
Absence , sample collected Aug 19, 2025 09:05, sampling point TC0009 E. Coli
Collected
Aug 19, 2025 09:30
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26182
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 19, 2025 09:30, sampling point TC0011 Coliform (TCR)
Absence , sample collected Aug 19, 2025 09:30, sampling point TC0011 E. Coli
Collected
Aug 19, 2025 08:45
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26180
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 19, 2025 08:45, sampling point TC0018 Coliform (TCR)
Absence , sample collected Aug 19, 2025 08:45, sampling point TC0018 E. Coli
Collected
Aug 19, 2025 08:30
Sampling point
TC0022 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26179
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 19, 2025 08:30, sampling point TC0022 Coliform (TCR)
Absence , sample collected Aug 19, 2025 08:30, sampling point TC0022 E. Coli
Collected
Aug 18, 2025 09:00
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26175
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 18, 2025 09:00, sampling point TC0003 Coliform (TCR)
Absence , sample collected Aug 18, 2025 09:00, sampling point TC0003 E. Coli
Collected
Aug 18, 2025 10:50
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26178
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 18, 2025 10:50, sampling point TC0005 Coliform (TCR)
Absence , sample collected Aug 18, 2025 10:50, sampling point TC0005 E. Coli
Collected
Aug 18, 2025 09:20
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26176
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 18, 2025 09:20, sampling point TC0014 Coliform (TCR)
Absence , sample collected Aug 18, 2025 09:20, sampling point TC0014 E. Coli
Collected
Aug 18, 2025 09:45
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26177
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 18, 2025 09:45, sampling point TC0015 Coliform (TCR)
Absence , sample collected Aug 18, 2025 09:45, sampling point TC0015 E. Coli
Collected
Jul 21, 2025 09:00
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26173
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 21, 2025 09:00, sampling point TC0009 Coliform (TCR)
Absence , sample collected Jul 21, 2025 09:00, sampling point TC0009 E. Coli