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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 91–105 of 149 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Columbia, 91 to 105 of 149 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jun 25, 2025 15:38
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10141
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 25, 2025 15:38, sampling point TC0012 Coliform (TCR)
Absence , sample collected Jun 25, 2025 15:38, sampling point TC0012 E. Coli
Collected
Jun 24, 2025
Sampling point
TC0008 Outside Faucet
Sample type
Routine
Lab sample
2506482-01
Laboratory
Bonner Analytical Testing Co
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 24, 2025, sampling point TC0008 Coliform (TCR)
Collected
May 21, 2025 13:00
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10127
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 21, 2025 13:00, sampling point TC0002 Coliform (TCR)
Absence , sample collected May 21, 2025 13:00, sampling point TC0002 E. Coli
Collected
May 21, 2025 12:40
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10132
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 21, 2025 12:40, sampling point TC0003 Coliform (TCR)
Absence , sample collected May 21, 2025 12:40, sampling point TC0003 E. Coli
Collected
May 21, 2025 13:18
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10128
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 21, 2025 13:18, sampling point TC0004 Coliform (TCR)
Absence , sample collected May 21, 2025 13:18, sampling point TC0004 E. Coli
Collected
May 21, 2025 13:37
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10129
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 21, 2025 13:37, sampling point TC0006 Coliform (TCR)
Absence , sample collected May 21, 2025 13:37, sampling point TC0006 E. Coli
Collected
May 21, 2025 14:07
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10131
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 21, 2025 14:07, sampling point TC0009 Coliform (TCR)
Absence , sample collected May 21, 2025 14:07, sampling point TC0009 E. Coli
Collected
May 21, 2025 13:50
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10130
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 21, 2025 13:50, sampling point TC0012 Coliform (TCR)
Absence , sample collected May 21, 2025 13:50, sampling point TC0012 E. Coli
Collected
May 20, 2025 14:00
Sampling point
TC0008 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10126
Laboratory
MSDH Lab
Monitoring period
May 1, 2025 – May 31, 2025
Absence , sample collected May 20, 2025 14:00, sampling point TC0008 Coliform (TCR)
Absence , sample collected May 20, 2025 14:00, sampling point TC0008 E. Coli
Collected
Apr 30, 2025 06:50
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10216
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 30, 2025 06:50, sampling point TC0002 Coliform (TCR)
Absence , sample collected Apr 30, 2025 06:50, sampling point TC0002 E. Coli
Collected
Apr 30, 2025 07:04
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10217
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 30, 2025 07:04, sampling point TC0003 Coliform (TCR)
Absence , sample collected Apr 30, 2025 07:04, sampling point TC0003 E. Coli
Collected
Apr 30, 2025 06:20
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10218
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 30, 2025 06:20, sampling point TC0004 Coliform (TCR)
Absence , sample collected Apr 30, 2025 06:20, sampling point TC0004 E. Coli
Collected
Apr 30, 2025 08:00
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10219
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 30, 2025 08:00, sampling point TC0006 Coliform (TCR)
Absence , sample collected Apr 30, 2025 08:00, sampling point TC0006 E. Coli
Collected
Apr 30, 2025 06:14
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10221
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 30, 2025 06:14, sampling point TC0009 Coliform (TCR)
Absence , sample collected Apr 30, 2025 06:14, sampling point TC0009 E. Coli
Collected
Apr 30, 2025 05:50
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-230322-10220
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 30, 2025 05:50, sampling point TC0012 Coliform (TCR)
Absence , sample collected Apr 30, 2025 05:50, sampling point TC0012 E. Coli