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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

MS0240154 , Harrison Central High School

2 of 747 results on record were positive for coliform or another organism the agency tests for. The most recent was August 14, 2024.

They fall across 2 of the 567 samples on record.

Every sample on record, October 14, 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 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 16–30 of 48 samples in this date range, newest first.

Routine (15).

We withheld the location of 1 sampling point below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Coliform and microbial sample results for Harrison Central High School, 16 to 30 of 48 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jan 7, 2026 13:50
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250203-5133
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 7, 2026 13:50, sampling point TC0004 Coliform (TCR)
Absence , sample collected Jan 7, 2026 13:50, sampling point TC0004 E. Coli
Collected
Dec 3, 2025 09:25
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-250203-5130
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 09:25, sampling point TC0001 Coliform (TCR)
Absence , sample collected Dec 3, 2025 09:25, sampling point TC0001 E. Coli
Collected
Dec 3, 2025 09:34
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250203-5131
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 09:34, sampling point TC0004 Coliform (TCR)
Absence , sample collected Dec 3, 2025 09:34, sampling point TC0004 E. Coli
Collected
Nov 5, 2025 10:05
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-250203-5128
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 5, 2025 10:05, sampling point TC0001 Coliform (TCR)
Absence , sample collected Nov 5, 2025 10:05, sampling point TC0001 E. Coli
Collected
Nov 5, 2025 10:19
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250203-5129
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 5, 2025 10:19, sampling point TC0004 Coliform (TCR)
Absence , sample collected Nov 5, 2025 10:19, sampling point TC0004 E. Coli
Collected
Oct 13, 2025 13:11
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33574
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 13, 2025 13:11, sampling point TC0001 Coliform (TCR)
Absence , sample collected Oct 13, 2025 13:11, sampling point TC0001 E. Coli
Collected
Oct 13, 2025 13:20
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250203-5127
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 13, 2025 13:20, sampling point TC0004 Coliform (TCR)
Absence , sample collected Oct 13, 2025 13:20, sampling point TC0004 E. Coli
Collected
Sep 2, 2025 13:40
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33576
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 2, 2025 13:40, sampling point TC0001 Coliform (TCR)
Absence , sample collected Sep 2, 2025 13:40, sampling point TC0001 E. Coli
Collected
Sep 2, 2025 13:52
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33575
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 2, 2025 13:52, sampling point TC0004 Coliform (TCR)
Absence , sample collected Sep 2, 2025 13:52, sampling point TC0004 E. Coli
Collected
Aug 4, 2025 11:30
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33572
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 4, 2025 11:30, sampling point TC0001 Coliform (TCR)
Absence , sample collected Aug 4, 2025 11:30, sampling point TC0001 E. Coli
Collected
Aug 4, 2025 11:45
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33573
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 4, 2025 11:45, sampling point TC0004 Coliform (TCR)
Absence , sample collected Aug 4, 2025 11:45, sampling point TC0004 E. Coli
Collected
Jul 16, 2025 10:00
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
BACT-230908-33578
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 16, 2025 10:00, sampling point LC0004 Coliform (TCR)
Absence , sample collected Jul 16, 2025 10:00, sampling point LC0004 E. Coli
Collected
Jul 16, 2025 10:06
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33577
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 16, 2025 10:06, sampling point TC0005 Coliform (TCR)
Absence , sample collected Jul 16, 2025 10:06, sampling point TC0005 E. Coli
Collected
Jun 2, 2025 13:12
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33581
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 2, 2025 13:12, sampling point TC0006 Coliform (TCR)
Absence , sample collected Jun 2, 2025 13:12, sampling point TC0006 E. Coli
Collected
Jun 2, 2025 13:21
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33579
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 2, 2025 13:21, sampling point TC0007 Coliform (TCR)
Absence , sample collected Jun 2, 2025 13:21, sampling point TC0007 E. Coli