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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 1–15 of 69 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for Monterey Water Assn-West, 1 to 15 of 69 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Aug 13, 2026 11:15
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25878
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2026 – Aug 31, 2026
Absence , sample collected Aug 13, 2026 11:15, sampling point TC0002 Coliform (TCR)
Absence , sample collected Aug 13, 2026 11:15, sampling point TC0002 E. Coli
Collected
Aug 13, 2026 10:15
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25879
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2026 – Aug 31, 2026
Absence , sample collected Aug 13, 2026 10:15, sampling point TC0005 Coliform (TCR)
Absence , sample collected Aug 13, 2026 10:15, sampling point TC0005 E. Coli
Collected
Aug 13, 2026 09:30
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25880
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2026 – Aug 31, 2026
Absence , sample collected Aug 13, 2026 09:30, sampling point TC0007 Coliform (TCR)
Absence , sample collected Aug 13, 2026 09:30, sampling point TC0007 E. Coli
Collected
Jul 7, 2026 08:30
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25876
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 7, 2026 08:30, sampling point TC0002 Coliform (TCR)
Absence , sample collected Jul 7, 2026 08:30, sampling point TC0002 E. Coli
Collected
Jul 7, 2026 07:50
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25875
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 7, 2026 07:50, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jul 7, 2026 07:50, sampling point TC0003 E. Coli
Collected
Jul 7, 2026 09:00
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25877
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 7, 2026 09:00, sampling point TC0010 Coliform (TCR)
Absence , sample collected Jul 7, 2026 09:00, sampling point TC0010 E. Coli
Collected
Jun 8, 2026 07:45
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25873
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 8, 2026 07:45, sampling point TC0004 Coliform (TCR)
Absence , sample collected Jun 8, 2026 07:45, sampling point TC0004 E. Coli
Collected
Jun 8, 2026 08:05
Sampling point
TC0006 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25874
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 8, 2026 08:05, sampling point TC0006 Coliform (TCR)
Absence , sample collected Jun 8, 2026 08:05, sampling point TC0006 E. Coli
Collected
Jun 8, 2026 07:25
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25872
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 8, 2026 07:25, sampling point TC0007 Coliform (TCR)
Absence , sample collected Jun 8, 2026 07:25, sampling point TC0007 E. Coli
Collected
May 6, 2026 09:00
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25926
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 6, 2026 09:00, sampling point TC0002 Coliform (TCR)
Absence , sample collected May 6, 2026 09:00, sampling point TC0002 E. Coli
Collected
May 6, 2026 08:45
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25925
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 6, 2026 08:45, sampling point TC0003 Coliform (TCR)
Absence , sample collected May 6, 2026 08:45, sampling point TC0003 E. Coli
Collected
May 6, 2026 08:15
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25924
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 6, 2026 08:15, sampling point TC0004 Coliform (TCR)
Absence , sample collected May 6, 2026 08:15, sampling point TC0004 E. Coli
Collected
Apr 7, 2026 10:05
Sampling point
TC0002 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25922
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 7, 2026 10:05, sampling point TC0002 Coliform (TCR)
Absence , sample collected Apr 7, 2026 10:05, sampling point TC0002 E. Coli
Collected
Apr 7, 2026 09:30
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25923
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 7, 2026 09:30, sampling point TC0003 Coliform (TCR)
Absence , sample collected Apr 7, 2026 09:30, sampling point TC0003 E. Coli
Collected
Apr 7, 2026 10:35
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250514-25921
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 7, 2026 10:35, sampling point TC0004 Coliform (TCR)
Absence , sample collected Apr 7, 2026 10:35, sampling point TC0004 E. Coli