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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

MS0090005 , City of Houston

3 of 1,637 results on record were positive for coliform or another organism the agency tests for. The most recent was January 7, 2019.

They fall across 3 of the 1,276 samples on record.

Every sample on record, October 9, 2003 to August 3, 2026. No date range is applied.

This system’s violations

The most recent samples

No date range is applied: this list draws on every sample on record. Show the last two years only.

The list below shows 31–45 of 1,276 samples on record, newest first.

Routine (15).

Coliform and microbial sample results for City of Houston, 31 to 45 of 1,276 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jan 12, 2026 11:08
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-250403-20338
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 12, 2026 11:08, sampling point TC0009 Coliform (TCR)
Absence , sample collected Jan 12, 2026 11:08, sampling point TC0009 E. Coli
Collected
Jan 12, 2026 11:29
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-250403-20339
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 12, 2026 11:29, sampling point TC0010 Coliform (TCR)
Absence , sample collected Jan 12, 2026 11:29, sampling point TC0010 E. Coli
Collected
Dec 8, 2025 10:41
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10187
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 8, 2025 10:41, sampling point TC0002 Coliform (TCR)
Absence , sample collected Dec 8, 2025 10:41, sampling point TC0002 E. Coli
Collected
Dec 8, 2025 11:40
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10190
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 8, 2025 11:40, sampling point TC0003 Coliform (TCR)
Absence , sample collected Dec 8, 2025 11:40, sampling point TC0003 E. Coli
Collected
Dec 8, 2025 11:00
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10188
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 8, 2025 11:00, sampling point TC0009 Coliform (TCR)
Absence , sample collected Dec 8, 2025 11:00, sampling point TC0009 E. Coli
Collected
Dec 8, 2025 11:18
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10189
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 8, 2025 11:18, sampling point TC0010 Coliform (TCR)
Absence , sample collected Dec 8, 2025 11:18, sampling point TC0010 E. Coli
Collected
Nov 3, 2025 10:30
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10183
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 3, 2025 10:30, sampling point TC0002 Coliform (TCR)
Absence , sample collected Nov 3, 2025 10:30, sampling point TC0002 E. Coli
Collected
Nov 3, 2025 11:11
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10185
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 3, 2025 11:11, sampling point TC0006 Coliform (TCR)
Absence , sample collected Nov 3, 2025 11:11, sampling point TC0006 E. Coli
Collected
Nov 3, 2025 10:47
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10184
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 3, 2025 10:47, sampling point TC0009 Coliform (TCR)
Absence , sample collected Nov 3, 2025 10:47, sampling point TC0009 E. Coli
Collected
Nov 3, 2025 11:42
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10186
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 3, 2025 11:42, sampling point TC0010 Coliform (TCR)
Absence , sample collected Nov 3, 2025 11:42, sampling point TC0010 E. Coli
Collected
Oct 7, 2025 14:24
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10179
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 7, 2025 14:24, sampling point TC0002 Coliform (TCR)
Absence , sample collected Oct 7, 2025 14:24, sampling point TC0002 E. Coli
Collected
Oct 7, 2025 15:05
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10182
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 7, 2025 15:05, sampling point TC0003 Coliform (TCR)
Absence , sample collected Oct 7, 2025 15:05, sampling point TC0003 E. Coli
Collected
Oct 7, 2025 14:39
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10180
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 7, 2025 14:39, sampling point TC0009 Coliform (TCR)
Absence , sample collected Oct 7, 2025 14:39, sampling point TC0009 E. Coli
Collected
Oct 7, 2025 14:50
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10181
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 7, 2025 14:50, sampling point TC0010 Coliform (TCR)
Absence , sample collected Oct 7, 2025 14:50, sampling point TC0010 E. Coli
Collected
Sep 8, 2025 11:41
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10178
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 8, 2025 11:41, sampling point TC0002 Coliform (TCR)
Absence , sample collected Sep 8, 2025 11:41, sampling point TC0002 E. Coli