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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

MS0170025 , City of Horn Lake - Twin Lakes

14 of 642 results on record were positive for coliform or another organism the agency tests for. The most recent was August 12, 2024.

They fall across 14 of the 462 samples on record.

Every sample on record, October 2, 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 25, 2024 and September 25, 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 1–15 of 46 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Horn Lake - Twin Lakes, 1 to 15 of 46 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Aug 10, 2026 09:20
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-250801-39478
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2026 – Aug 31, 2026
Absence , sample collected Aug 10, 2026 09:20, sampling point TC0001 Coliform (TCR)
Absence , sample collected Aug 10, 2026 09:20, sampling point TC0001 E. Coli
Collected
Aug 10, 2026 09:00
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-250801-39479
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2026 – Aug 31, 2026
Absence , sample collected Aug 10, 2026 09:00, sampling point TC0003 Coliform (TCR)
Absence , sample collected Aug 10, 2026 09:00, sampling point TC0003 E. Coli
Collected
Jul 13, 2026 09:40
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-250801-39476
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 13, 2026 09:40, sampling point TC0001 Coliform (TCR)
Absence , sample collected Jul 13, 2026 09:40, sampling point TC0001 E. Coli
Collected
Jul 13, 2026 09:30
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-250801-39477
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 13, 2026 09:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jul 13, 2026 09:30, sampling point TC0003 E. Coli
Collected
Jun 2, 2026 09:50
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-250801-39474
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 2, 2026 09:50, sampling point TC0001 Coliform (TCR)
Absence , sample collected Jun 2, 2026 09:50, sampling point TC0001 E. Coli
Collected
Jun 2, 2026 09:35
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-250801-39475
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 2, 2026 09:35, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jun 2, 2026 09:35, sampling point TC0003 E. Coli
Collected
May 19, 2026 08:10
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-250801-39473
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 19, 2026 08:10, sampling point TC0001 Coliform (TCR)
Absence , sample collected May 19, 2026 08:10, sampling point TC0001 E. Coli
Collected
May 19, 2026 08:00
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-250801-39472
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 19, 2026 08:00, sampling point TC0003 Coliform (TCR)
Absence , sample collected May 19, 2026 08:00, sampling point TC0003 E. Coli
Collected
Apr 14, 2026 10:55
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-250801-39471
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 14, 2026 10:55, sampling point TC0001 Coliform (TCR)
Absence , sample collected Apr 14, 2026 10:55, sampling point TC0001 E. Coli
Collected
Apr 14, 2026 10:40
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-250801-39470
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 14, 2026 10:40, sampling point TC0003 Coliform (TCR)
Absence , sample collected Apr 14, 2026 10:40, sampling point TC0003 E. Coli
Collected
Mar 10, 2026 10:10
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-250801-39468
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 10, 2026 10:10, sampling point TC0001 Coliform (TCR)
Absence , sample collected Mar 10, 2026 10:10, sampling point TC0001 E. Coli
Collected
Mar 10, 2026 09:45
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-250801-39469
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 10, 2026 09:45, sampling point TC0003 Coliform (TCR)
Absence , sample collected Mar 10, 2026 09:45, sampling point TC0003 E. Coli
Collected
Feb 17, 2026 09:45
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-230908-33270
Laboratory
MSDH Lab
Monitoring period
Feb 1, 2026 – Feb 28, 2026
Absence , sample collected Feb 17, 2026 09:45, sampling point TC0001 Coliform (TCR)
Absence , sample collected Feb 17, 2026 09:45, sampling point TC0001 E. Coli
Collected
Feb 17, 2026 09:25
Sampling point
TC0003
Sample type
Routine
Lab sample
BACT-230908-33271
Laboratory
MSDH Lab
Monitoring period
Feb 1, 2026 – Feb 28, 2026
Absence , sample collected Feb 17, 2026 09:25, sampling point TC0003 Coliform (TCR)
Absence , sample collected Feb 17, 2026 09:25, sampling point TC0003 E. Coli
Collected
Jan 6, 2026 09:55
Sampling point
TC0001
Sample type
Routine
Lab sample
BACT-230908-33268
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 6, 2026 09:55, sampling point TC0001 Coliform (TCR)
Absence , sample collected Jan 6, 2026 09:55, sampling point TC0001 E. Coli