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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

MS0310010 , Philadelphia Water Assn

2 of 736 results on record were positive for coliform or another organism the agency tests for. The most recent was April 19, 2016.

They fall across 2 of the 560 samples on record.

Every sample on record, November 12, 2003 to August 12, 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 16–30 of 46 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for Philadelphia Water Assn, 16 to 30 of 46 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jan 14, 2026 12:19
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33897
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 14, 2026 12:19, sampling point TC0007 Coliform (TCR)
Absence , sample collected Jan 14, 2026 12:19, sampling point TC0007 E. Coli
Collected
Dec 3, 2025 12:02
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33896
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 12:02, sampling point TC0001 Coliform (TCR)
Absence , sample collected Dec 3, 2025 12:02, sampling point TC0001 E. Coli
Collected
Dec 3, 2025 12:17
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33895
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 12:17, sampling point TC0007 Coliform (TCR)
Absence , sample collected Dec 3, 2025 12:17, sampling point TC0007 E. Coli
Collected
Nov 5, 2025 12:09
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33894
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 5, 2025 12:09, sampling point TC0001 Coliform (TCR)
Absence , sample collected Nov 5, 2025 12:09, sampling point TC0001 E. Coli
Collected
Nov 5, 2025 12:26
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33893
Laboratory
MSDH Lab
Monitoring period
Nov 1, 2025 – Nov 30, 2025
Absence , sample collected Nov 5, 2025 12:26, sampling point TC0007 Coliform (TCR)
Absence , sample collected Nov 5, 2025 12:26, sampling point TC0007 E. Coli
Collected
Oct 8, 2025 14:07
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33892
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 8, 2025 14:07, sampling point TC0001 Coliform (TCR)
Absence , sample collected Oct 8, 2025 14:07, sampling point TC0001 E. Coli
Collected
Oct 8, 2025 14:26
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33891
Laboratory
MSDH Lab
Monitoring period
Oct 1, 2025 – Oct 31, 2025
Absence , sample collected Oct 8, 2025 14:26, sampling point TC0007 Coliform (TCR)
Absence , sample collected Oct 8, 2025 14:26, sampling point TC0007 E. Coli
Collected
Sep 10, 2025 14:16
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33890
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 10, 2025 14:16, sampling point TC0001 Coliform (TCR)
Absence , sample collected Sep 10, 2025 14:16, sampling point TC0001 E. Coli
Collected
Sep 10, 2025 14:44
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33889
Laboratory
MSDH Lab
Monitoring period
Sep 1, 2025 – Sep 30, 2025
Absence , sample collected Sep 10, 2025 14:44, sampling point TC0007 Coliform (TCR)
Absence , sample collected Sep 10, 2025 14:44, sampling point TC0007 E. Coli
Collected
Aug 6, 2025 14:58
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33887
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 6, 2025 14:58, sampling point TC0001 Coliform (TCR)
Absence , sample collected Aug 6, 2025 14:58, sampling point TC0001 E. Coli
Collected
Aug 6, 2025 15:10
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33888
Laboratory
MSDH Lab
Monitoring period
Aug 1, 2025 – Aug 31, 2025
Absence , sample collected Aug 6, 2025 15:10, sampling point TC0007 Coliform (TCR)
Absence , sample collected Aug 6, 2025 15:10, sampling point TC0007 E. Coli
Collected
Jul 14, 2025 12:55
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33885
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 14, 2025 12:55, sampling point TC0001 Coliform (TCR)
Absence , sample collected Jul 14, 2025 12:55, sampling point TC0001 E. Coli
Collected
Jul 14, 2025 12:37
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33886
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2025 – Jul 31, 2025
Absence , sample collected Jul 14, 2025 12:37, sampling point TC0007 Coliform (TCR)
Absence , sample collected Jul 14, 2025 12:37, sampling point TC0007 E. Coli
Collected
Jun 2, 2025 13:34
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33883
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 2, 2025 13:34, sampling point TC0001 Coliform (TCR)
Absence , sample collected Jun 2, 2025 13:34, sampling point TC0001 E. Coli
Collected
Jun 2, 2025 13:51
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-230908-33884
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2025 – Jun 30, 2025
Absence , sample collected Jun 2, 2025 13:51, sampling point TC0007 Coliform (TCR)
Absence , sample collected Jun 2, 2025 13:51, sampling point TC0007 E. Coli