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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

MS0170022 , City of Horn Lake

14 of 4,989 results on record were positive for coliform or another organism the agency tests for. The most recent was September 16, 2025.

They fall across 13 of the 3,688 samples on record.

Every sample on record, October 7, 2003 to August 10, 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 28, 2024 and September 28, 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 346–352 of 352 samples in this date range, newest first.

Routine (7).

Coliform and microbial sample results for City of Horn Lake, 346 to 352 of 352 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Oct 21, 2024 08:35
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-221212-42931
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 08:35, sampling point TC0015 Coliform (TCR)
Absence , sample collected Oct 21, 2024 08:35, sampling point TC0015 E. Coli
Collected
Oct 21, 2024 09:10
Sampling point
TC0017 Outside Faucet
Sample type
Routine
Lab sample
BACT-221212-42934
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 09:10, sampling point TC0017 Coliform (TCR)
Absence , sample collected Oct 21, 2024 09:10, sampling point TC0017 E. Coli
Collected
Oct 21, 2024 09:00
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-221212-42933
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 09:00, sampling point TC0019 Coliform (TCR)
Absence , sample collected Oct 21, 2024 09:00, sampling point TC0019 E. Coli
Collected
Oct 21, 2024 08:00
Sampling point
TC0021 Outside Faucet
Sample type
Routine
Lab sample
BACT-221212-42908
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 08:00, sampling point TC0021 Coliform (TCR)
Absence , sample collected Oct 21, 2024 08:00, sampling point TC0021 E. Coli
Collected
Oct 21, 2024 08:45
Sampling point
TC0022 Outside Faucet
Sample type
Routine
Lab sample
BACT-221212-42932
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 08:45, sampling point TC0022 Coliform (TCR)
Absence , sample collected Oct 21, 2024 08:45, sampling point TC0022 E. Coli
Collected
Oct 21, 2024 09:20
Sampling point
TC0023 Outside Faucet
Sample type
Routine
Lab sample
BACT-221212-42935
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 09:20, sampling point TC0023 Coliform (TCR)
Absence , sample collected Oct 21, 2024 09:20, sampling point TC0023 E. Coli
Collected
Oct 21, 2024 08:10
Sampling point
TC0030 No Description
Sample type
Routine
Lab sample
BACT-221212-42909
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 21, 2024 08:10, sampling point TC0030 Coliform (TCR)
Absence , sample collected Oct 21, 2024 08:10, sampling point TC0030 E. Coli