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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

MS0610016 , Monterey Water Assn-West

2 of 1,103 results on record were positive for coliform or another organism the agency tests for. The most recent was August 22, 2018.

They fall across 2 of the 840 samples on record.

Every sample on record, October 22, 2003 to August 13, 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 31–45 of 69 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for Monterey Water Assn-West, 31 to 45 of 69 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Oct 13, 2025 08:00
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25904
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 13, 2025 08:00, sampling point TC0002 Coliform (TCR)
Absence , sample collected Oct 13, 2025 08:00, sampling point TC0002 E. Coli
Collected
Oct 13, 2025 07:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25903
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 13, 2025 07:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Oct 13, 2025 07:30, sampling point TC0003 E. Coli
Collected
Oct 13, 2025 07:00
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25902
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 13, 2025 07:00, sampling point TC0004 Coliform (TCR)
Absence , sample collected Oct 13, 2025 07:00, sampling point TC0004 E. Coli
Collected
Sep 16, 2025 10:30
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25899
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 16, 2025 10:30, sampling point TC0002 Coliform (TCR)
Absence , sample collected Sep 16, 2025 10:30, sampling point TC0002 E. Coli
Collected
Sep 16, 2025 11:00
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25900
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 16, 2025 11:00, sampling point TC0003 Coliform (TCR)
Absence , sample collected Sep 16, 2025 11:00, sampling point TC0003 E. Coli
Collected
Sep 16, 2025 11:30
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25901
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 16, 2025 11:30, sampling point TC0004 Coliform (TCR)
Absence , sample collected Sep 16, 2025 11:30, sampling point TC0004 E. Coli
Collected
Aug 11, 2025 12:30
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42877
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 11, 2025 12:30, sampling point TC0002 Coliform (TCR)
Absence , sample collected Aug 11, 2025 12:30, sampling point TC0002 E. Coli
Collected
Aug 11, 2025 13:00
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42878
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 11, 2025 13:00, sampling point TC0003 Coliform (TCR)
Absence , sample collected Aug 11, 2025 13:00, sampling point TC0003 E. Coli
Collected
Aug 11, 2025 13:20
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25898
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 11, 2025 13:20, sampling point TC0004 Coliform (TCR)
Absence , sample collected Aug 11, 2025 13:20, sampling point TC0004 E. Coli
Collected
Jul 9, 2025 10:00
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42874
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 9, 2025 10:00, sampling point TC0002 Coliform (TCR)
Absence , sample collected Jul 9, 2025 10:00, sampling point TC0002 E. Coli
Collected
Jul 9, 2025 10:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42875
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 9, 2025 10:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jul 9, 2025 10:30, sampling point TC0003 E. Coli
Collected
Jul 9, 2025 11:00
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42876
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 9, 2025 11:00, sampling point TC0004 Coliform (TCR)
Absence , sample collected Jul 9, 2025 11:00, sampling point TC0004 E. Coli
Collected
Jun 5, 2025 10:00
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42873
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 5, 2025 10:00, sampling point TC0002 Coliform (TCR)
Absence , sample collected Jun 5, 2025 10:00, sampling point TC0002 E. Coli
Collected
Jun 5, 2025 09:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42872
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 5, 2025 09:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jun 5, 2025 09:30, sampling point TC0003 E. Coli
Collected
Jun 5, 2025 09:00
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-241206-42871
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 5, 2025 09:00, sampling point TC0004 Coliform (TCR)
Absence , sample collected Jun 5, 2025 09:00, sampling point TC0004 E. Coli