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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

MS0010007 , Oakland Water Works

18 of 424 results on record were positive for coliform or another organism the agency tests for. The most recent was April 6, 2017.

They fall across 18 of the 343 samples on record.

Every sample on record, October 6, 2003 to July 6, 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 16–22 of 22 samples in this date range, newest first.

Routine (7).

Coliform and microbial sample results for Oakland Water Works, 16 to 22 of 22 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Apr 7, 2025 09:10
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-240618-26275
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2025 – Apr 30, 2025
Absence , sample collected Apr 7, 2025 09:10, sampling point TC0003 Coliform (TCR)
Absence , sample collected Apr 7, 2025 09:10, sampling point TC0003 E. Coli
Collected
Mar 5, 2025 09:55
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-210922-38504
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2025 – Mar 31, 2025
Absence , sample collected Mar 5, 2025 09:55, sampling point TC0004 Coliform (TCR)
Absence , sample collected Mar 5, 2025 09:55, sampling point TC0004 E. Coli
Collected
Feb 10, 2025 11:05
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
BACT-240618-26273
Laboratory
MSDH Lab
Monitoring period
Feb 1, 2025 – Feb 28, 2025
Absence , sample collected Feb 10, 2025 11:05, sampling point DS000 Coliform (TCR)
Absence , sample collected Feb 10, 2025 11:05, sampling point DS000 E. Coli
Collected
Jan 15, 2025 10:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
BACT-240618-26272
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2025 – Jan 31, 2025
Absence , sample collected Jan 15, 2025 10:50, sampling point DS000 Coliform (TCR)
Absence , sample collected Jan 15, 2025 10:50, sampling point DS000 E. Coli
Collected
Dec 2, 2024 10:55
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
BACT-240618-26270
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2024 – Dec 31, 2024
Absence , sample collected Dec 2, 2024 10:55, sampling point DS000 Coliform (TCR)
Absence , sample collected Dec 2, 2024 10:55, sampling point DS000 E. Coli
Collected
Nov 6, 2024 10:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
BACT-240618-26268
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2024 – Nov 30, 2024
Absence , sample collected Nov 6, 2024 10:15, sampling point DS000 Coliform (TCR)
Absence , sample collected Nov 6, 2024 10:15, sampling point DS000 E. Coli
Collected
Oct 10, 2024 10:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
BACT-240618-26267
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2024 – Oct 31, 2024
Absence , sample collected Oct 10, 2024 10:20, sampling point DS000 Coliform (TCR)
Absence , sample collected Oct 10, 2024 10:20, sampling point DS000 E. Coli