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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

MS0450010 , City of Madison

10 of 5,233 results on record were positive for coliform or another organism the agency tests for. The most recent was April 5, 2021.

They fall across 10 of the 3,897 samples on record.

Every sample on record, October 13, 2003 to August 4, 2026. No date range is applied.

This system’s violations

The most recent samples

No date range is applied: this list draws on every sample on record. Show the last two years only.

The list below shows 61–75 of 3,897 samples on record, newest first.

Routine (15).

Coliform and microbial sample results for City of Madison, 61 to 75 of 3,897 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Apr 8, 2026 08:15
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35984
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 8, 2026 08:15, sampling point TC0013 Coliform (TCR)
Absence , sample collected Apr 8, 2026 08:15, sampling point TC0013 E. Coli
Collected
Apr 8, 2026 08:35
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35983
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 8, 2026 08:35, sampling point TC0020 Coliform (TCR)
Absence , sample collected Apr 8, 2026 08:35, sampling point TC0020 E. Coli
Collected
Apr 8, 2026 07:55
Sampling point
TC0029 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35985
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 8, 2026 07:55, sampling point TC0029 Coliform (TCR)
Absence , sample collected Apr 8, 2026 07:55, sampling point TC0029 E. Coli
Collected
Apr 2, 2026 09:09
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36182
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 09:09, sampling point TC0001 Coliform (TCR)
Absence , sample collected Apr 2, 2026 09:09, sampling point TC0001 E. Coli
Collected
Apr 2, 2026 11:04
Sampling point
TC0007 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36183
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 11:04, sampling point TC0007 Coliform (TCR)
Absence , sample collected Apr 2, 2026 11:04, sampling point TC0007 E. Coli
Collected
Apr 2, 2026 11:34
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-260402-9802
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 11:34, sampling point TC0010 Coliform (TCR)
Absence , sample collected Apr 2, 2026 11:34, sampling point TC0010 E. Coli
Collected
Apr 2, 2026 10:29
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-260402-9804
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 10:29, sampling point TC0011 Coliform (TCR)
Absence , sample collected Apr 2, 2026 10:29, sampling point TC0011 E. Coli
Collected
Apr 2, 2026 10:08
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36181
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 10:08, sampling point TC0013 Coliform (TCR)
Absence , sample collected Apr 2, 2026 10:08, sampling point TC0013 E. Coli
Collected
Apr 2, 2026 08:27
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36184
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 08:27, sampling point TC0015 Coliform (TCR)
Absence , sample collected Apr 2, 2026 08:27, sampling point TC0015 E. Coli
Collected
Apr 2, 2026 08:43
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36186
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 08:43, sampling point TC0016 Coliform (TCR)
Absence , sample collected Apr 2, 2026 08:43, sampling point TC0016 E. Coli
Collected
Apr 2, 2026 10:44
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-260402-9801
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 10:44, sampling point TC0019 Coliform (TCR)
Absence , sample collected Apr 2, 2026 10:44, sampling point TC0019 E. Coli
Collected
Apr 2, 2026 10:20
Sampling point
TC0023 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36180
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 10:20, sampling point TC0023 Coliform (TCR)
Absence , sample collected Apr 2, 2026 10:20, sampling point TC0023 E. Coli
Collected
Apr 2, 2026 10:55
Sampling point
TC0028 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36187
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 10:55, sampling point TC0028 Coliform (TCR)
Absence , sample collected Apr 2, 2026 10:55, sampling point TC0028 E. Coli
Collected
Apr 2, 2026 12:10
Sampling point
TC0032 Ne End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-260402-9803
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 12:10, sampling point TC0032 Coliform (TCR)
Absence , sample collected Apr 2, 2026 12:10, sampling point TC0032 E. Coli
Collected
Apr 2, 2026 09:43
Sampling point
TC0034 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36185
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 2, 2026 09:43, sampling point TC0034 Coliform (TCR)
Absence , sample collected Apr 2, 2026 09:43, sampling point TC0034 E. Coli