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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. 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 76–90 of 92 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for City of Houston, 76 to 90 of 92 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Feb 3, 2025 11:01
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10199
Laboratory
MSDH Lab
Monitoring period
Feb 1, 2025 – Feb 28, 2025
Absence , sample collected Feb 3, 2025 11:01, sampling point TC0010 Coliform (TCR)
Absence , sample collected Feb 3, 2025 11:01, sampling point TC0010 E. Coli
Collected
Jan 7, 2025 10:15
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10193
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2025 – Jan 31, 2025
Absence , sample collected Jan 7, 2025 10:15, sampling point TC0002 Coliform (TCR)
Absence , sample collected Jan 7, 2025 10:15, sampling point TC0002 E. Coli
Collected
Jan 7, 2025 11:47
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10196
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2025 – Jan 31, 2025
Absence , sample collected Jan 7, 2025 11:47, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jan 7, 2025 11:47, sampling point TC0003 E. Coli
Collected
Jan 7, 2025 10:35
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10194
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2025 – Jan 31, 2025
Absence , sample collected Jan 7, 2025 10:35, sampling point TC0009 Coliform (TCR)
Absence , sample collected Jan 7, 2025 10:35, sampling point TC0009 E. Coli
Collected
Jan 7, 2025 11:15
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10195
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2025 – Jan 31, 2025
Absence , sample collected Jan 7, 2025 11:15, sampling point TC0010 Coliform (TCR)
Absence , sample collected Jan 7, 2025 11:15, sampling point TC0010 E. Coli
Collected
Dec 10, 2024 10:30
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10229
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2024 – Dec 31, 2024
Absence , sample collected Dec 10, 2024 10:30, sampling point TC0002 Coliform (TCR)
Absence , sample collected Dec 10, 2024 10:30, sampling point TC0002 E. Coli
Collected
Dec 10, 2024 11:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10192
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2024 – Dec 31, 2024
Absence , sample collected Dec 10, 2024 11:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Dec 10, 2024 11:30, sampling point TC0003 E. Coli
Collected
Dec 10, 2024 10:50
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10230
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2024 – Dec 31, 2024
Absence , sample collected Dec 10, 2024 10:50, sampling point TC0009 Coliform (TCR)
Absence , sample collected Dec 10, 2024 10:50, sampling point TC0009 E. Coli
Collected
Dec 10, 2024 11:00
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10231
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2024 – Dec 31, 2024
Absence , sample collected Dec 10, 2024 11:00, sampling point TC0010 Coliform (TCR)
Absence , sample collected Dec 10, 2024 11:00, sampling point TC0010 E. Coli
Collected
Nov 18, 2024 11:17
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10225
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2024 – Nov 30, 2024
Absence , sample collected Nov 18, 2024 11:17, sampling point TC0002 Coliform (TCR)
Absence , sample collected Nov 18, 2024 11:17, sampling point TC0002 E. Coli
Collected
Nov 18, 2024 11:55
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10227
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2024 – Nov 30, 2024
Absence , sample collected Nov 18, 2024 11:55, sampling point TC0003 Coliform (TCR)
Absence , sample collected Nov 18, 2024 11:55, sampling point TC0003 E. Coli
Collected
Nov 18, 2024 11:30
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10226
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2024 – Nov 30, 2024
Absence , sample collected Nov 18, 2024 11:30, sampling point TC0009 Coliform (TCR)
Absence , sample collected Nov 18, 2024 11:30, sampling point TC0009 E. Coli
Collected
Nov 18, 2024 12:05
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10228
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2024 – Nov 30, 2024
Absence , sample collected Nov 18, 2024 12:05, sampling point TC0010 Coliform (TCR)
Absence , sample collected Nov 18, 2024 12:05, sampling point TC0010 E. Coli
Collected
Oct 1, 2024 10:30
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10216
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 1, 2024 10:30, sampling point TC0002 Coliform (TCR)
Absence , sample collected Oct 1, 2024 10:30, sampling point TC0002 E. Coli
Collected
Oct 1, 2024 11:15
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240206-10219
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 1, 2024 11:15, sampling point TC0003 Coliform (TCR)
Absence , sample collected Oct 1, 2024 11:15, sampling point TC0003 E. Coli