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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

MS0460003 , City of Columbia

11 of 2,690 results on record were positive for coliform or another organism the agency tests for. The most recent was June 29, 2020.

They fall across 11 of the 2,068 samples on record.

Every sample on record, October 16, 2003 to July 27, 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 149 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Columbia, 16 to 30 of 149 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
May 20, 2026 15:00
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68795
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 15:00, sampling point TC0002 Coliform (TCR)
Absence , sample collected May 20, 2026 15:00, sampling point TC0002 E. Coli
Collected
May 20, 2026 15:22
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68796
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 15:22, sampling point TC0003 Coliform (TCR)
Absence , sample collected May 20, 2026 15:22, sampling point TC0003 E. Coli
Collected
May 20, 2026 14:40
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68797
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 14:40, sampling point TC0004 Coliform (TCR)
Absence , sample collected May 20, 2026 14:40, sampling point TC0004 E. Coli
Collected
May 20, 2026 14:05
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68798
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 14:05, sampling point TC0006 Coliform (TCR)
Absence , sample collected May 20, 2026 14:05, sampling point TC0006 E. Coli
Collected
May 20, 2026 13:18
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68800
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 13:18, sampling point TC0009 Coliform (TCR)
Absence , sample collected May 20, 2026 13:18, sampling point TC0009 E. Coli
Collected
May 20, 2026 13:47
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68799
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 13:47, sampling point TC0012 Coliform (TCR)
Absence , sample collected May 20, 2026 13:47, sampling point TC0012 E. Coli
Collected
Apr 28, 2026 15:40
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68794
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 28, 2026 15:40, sampling point TC0003 Coliform (TCR)
Absence , sample collected Apr 28, 2026 15:40, sampling point TC0003 E. Coli
Collected
Apr 22, 2026 11:22
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68789
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 22, 2026 11:22, sampling point TC0002 Coliform (TCR)
Absence , sample collected Apr 22, 2026 11:22, sampling point TC0002 E. Coli
Collected
Apr 22, 2026 11:58
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68791
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 22, 2026 11:58, sampling point TC0004 Coliform (TCR)
Absence , sample collected Apr 22, 2026 11:58, sampling point TC0004 E. Coli
Collected
Apr 22, 2026 12:15
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68792
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 22, 2026 12:15, sampling point TC0006 Coliform (TCR)
Absence , sample collected Apr 22, 2026 12:15, sampling point TC0006 E. Coli
Collected
Apr 22, 2026 11:05
Sampling point
TC0008 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68788
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 22, 2026 11:05, sampling point TC0008 Coliform (TCR)
Absence , sample collected Apr 22, 2026 11:05, sampling point TC0008 E. Coli
Collected
Apr 22, 2026 12:40
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68793
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 22, 2026 12:40, sampling point TC0009 Coliform (TCR)
Absence , sample collected Apr 22, 2026 12:40, sampling point TC0009 E. Coli
Collected
Apr 21, 2026 16:00
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68787
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 21, 2026 16:00, sampling point TC0012 Coliform (TCR)
Absence , sample collected Apr 21, 2026 16:00, sampling point TC0012 E. Coli
Collected
Mar 26, 2026 08:35
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68781
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 26, 2026 08:35, sampling point TC0002 Coliform (TCR)
Absence , sample collected Mar 26, 2026 08:35, sampling point TC0002 E. Coli
Collected
Mar 26, 2026 07:00
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-251208-68782
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 26, 2026 07:00, sampling point TC0003 Coliform (TCR)
Absence , sample collected Mar 26, 2026 07:00, sampling point TC0003 E. Coli