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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

MS0350006 , Porterville W/A

8 of 1,023 results on record were positive for coliform or another organism the agency tests for. The most recent was March 31, 2026.

They fall across 8 of the 835 samples on record.

Every sample on record, November 3, 2003 to July 8, 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 50 samples in this date range, newest first.

Routine (9), Repeat (3) and TG (3). The agency publishes no name for the code TG, so none is shown — this page does not invent labels the agency has not published.

Coliform and microbial sample results for Porterville W/A, 1 to 15 of 50 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jul 8, 2026 12:27
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-260331-9007
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 8, 2026 12:27, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jul 8, 2026 12:27, sampling point TC0003 E. Coli
Collected
Jul 8, 2026 09:20
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-260331-9008
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 8, 2026 09:20, sampling point TC0013 Coliform (TCR)
Absence , sample collected Jul 8, 2026 09:20, sampling point TC0013 E. Coli
Collected
Jun 10, 2026 09:35
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-260331-9006
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 10, 2026 09:35, sampling point TC0005 Coliform (TCR)
Absence , sample collected Jun 10, 2026 09:35, sampling point TC0005 E. Coli
Collected
Jun 10, 2026 09:03
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-260331-9005
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 10, 2026 09:03, sampling point TC0013 Coliform (TCR)
Absence , sample collected Jun 10, 2026 09:03, sampling point TC0013 E. Coli
Collected
May 20, 2026 08:55
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-260331-9004
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 08:55, sampling point TC0005 Coliform (TCR)
Absence , sample collected May 20, 2026 08:55, sampling point TC0005 E. Coli
Collected
May 20, 2026 10:30
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-260331-9003
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 20, 2026 10:30, sampling point TC0013 Coliform (TCR)
Absence , sample collected May 20, 2026 10:30, sampling point TC0013 E. Coli
Collected
Apr 6, 2026 12:40
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-260116-585
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 6, 2026 12:40, sampling point TC0003 Coliform (TCR)
Absence , sample collected Apr 6, 2026 12:40, sampling point TC0003 E. Coli
Collected
Apr 6, 2026 13:45
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-260116-586
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 6, 2026 13:45, sampling point TC0013 Coliform (TCR)
Absence , sample collected Apr 6, 2026 13:45, sampling point TC0013 E. Coli
Collected
Mar 31, 2026 09:53
Sampling point
DS000 Distribution
Sample type
Repeat
Lab sample
BACT-260116-584
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Presence , sample collected Mar 31, 2026 09:53, sampling point DS000 Coliform (TCR)
Absence , sample collected Mar 31, 2026 09:53, sampling point DS000 E. Coli
Collected
Mar 30, 2026 12:37
Sampling point
DS000 Distribution
Sample type
TG
Lab sample
BACT-260116-579
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 30, 2026 12:37, sampling point DS000 Coliform (TCR)
Absence , sample collected Mar 30, 2026 12:37, sampling point DS000 E. Coli
Collected
Mar 30, 2026 14:03
Sampling point
DS000 Distribution
Sample type
TG
Lab sample
BACT-260116-580
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 30, 2026 14:03, sampling point DS000 Coliform (TCR)
Absence , sample collected Mar 30, 2026 14:03, sampling point DS000 E. Coli
Collected
Mar 30, 2026 15:39
Sampling point
DS000 Distribution
Sample type
TG
Lab sample
BACT-260116-581
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 30, 2026 15:39, sampling point DS000 Coliform (TCR)
Absence , sample collected Mar 30, 2026 15:39, sampling point DS000 E. Coli
Collected
Mar 30, 2026 18:07
Sampling point
TC0001 Outside Faucet
Sample type
Repeat
Lab sample
BACT-260116-582
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Presence , sample collected Mar 30, 2026 18:07, sampling point TC0001 Coliform (TCR)
Absence , sample collected Mar 30, 2026 18:07, sampling point TC0001 E. Coli
Collected
Mar 30, 2026 17:39
Sampling point
TC0002 Outside Faucet
Sample type
Repeat
Lab sample
BACT-260116-583
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Presence , sample collected Mar 30, 2026 17:39, sampling point TC0002 Coliform (TCR)
Absence , sample collected Mar 30, 2026 17:39, sampling point TC0002 E. Coli
Collected
Mar 25, 2026 12:36
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-260116-576
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Presence , sample collected Mar 25, 2026 12:36, sampling point TC0001 Coliform (TCR)
Absence , sample collected Mar 25, 2026 12:36, sampling point TC0001 E. Coli