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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 76–90 of 184 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Louisville, 76 to 90 of 184 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Nov 5, 2025 08:20
Sampling point
TC0022 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26204
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 5, 2025 08:20, sampling point TC0022 Coliform (TCR)
Absence , sample collected Nov 5, 2025 08:20, sampling point TC0022 E. Coli
Collected
Nov 4, 2025 08:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26199
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 4, 2025 08:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Nov 4, 2025 08:30, sampling point TC0003 E. Coli
Collected
Nov 4, 2025 10:20
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26203
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 4, 2025 10:20, sampling point TC0011 Coliform (TCR)
Absence , sample collected Nov 4, 2025 10:20, sampling point TC0011 E. Coli
Collected
Nov 4, 2025 09:00
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26200
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 4, 2025 09:00, sampling point TC0014 Coliform (TCR)
Absence , sample collected Nov 4, 2025 09:00, sampling point TC0014 E. Coli
Collected
Nov 4, 2025 09:25
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26202
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 4, 2025 09:25, sampling point TC0015 Coliform (TCR)
Absence , sample collected Nov 4, 2025 09:25, sampling point TC0015 E. Coli
Collected
Oct 20, 2025 09:25
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26198
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 20, 2025 09:25, sampling point TC0005 Coliform (TCR)
Absence , sample collected Oct 20, 2025 09:25, sampling point TC0005 E. Coli
Collected
Oct 20, 2025 09:00
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26197
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 20, 2025 09:00, sampling point TC0009 Coliform (TCR)
Absence , sample collected Oct 20, 2025 09:00, sampling point TC0009 E. Coli
Collected
Oct 20, 2025 08:40
Sampling point
TC0018 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26196
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 20, 2025 08:40, sampling point TC0018 Coliform (TCR)
Absence , sample collected Oct 20, 2025 08:40, sampling point TC0018 E. Coli
Collected
Oct 20, 2025 08:25
Sampling point
TC0022 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26195
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 20, 2025 08:25, sampling point TC0022 Coliform (TCR)
Absence , sample collected Oct 20, 2025 08:25, sampling point TC0022 E. Coli
Collected
Oct 8, 2025 08:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26191
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 8, 2025 08:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Oct 8, 2025 08:30, sampling point TC0003 E. Coli
Collected
Oct 8, 2025 10:05
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26194
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 8, 2025 10:05, sampling point TC0011 Coliform (TCR)
Absence , sample collected Oct 8, 2025 10:05, sampling point TC0011 E. Coli
Collected
Oct 8, 2025 08:45
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26192
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 8, 2025 08:45, sampling point TC0014 Coliform (TCR)
Absence , sample collected Oct 8, 2025 08:45, sampling point TC0014 E. Coli
Collected
Oct 8, 2025 09:05
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26193
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 8, 2025 09:05, sampling point TC0015 Coliform (TCR)
Absence , sample collected Oct 8, 2025 09:05, sampling point TC0015 E. Coli
Collected
Sep 23, 2025 09:00
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26189
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 23, 2025 09:00, sampling point TC0009 Coliform (TCR)
Absence , sample collected Sep 23, 2025 09:00, sampling point TC0009 E. Coli
Collected
Sep 23, 2025 09:25
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-230711-26190
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 23, 2025 09:25, sampling point TC0011 Coliform (TCR)
Absence , sample collected Sep 23, 2025 09:25, sampling point TC0011 E. Coli