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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 76–90 of 3,897 samples on record, newest first.

Routine (15).

Coliform and microbial sample results for City of Madison, 76 to 90 of 3,897 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Mar 9, 2026 10:15
Sampling point
TC0005 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35986
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 9, 2026 10:15, sampling point TC0005 Coliform (TCR)
Absence , sample collected Mar 9, 2026 10:15, sampling point TC0005 E. Coli
Collected
Mar 9, 2026 09:30
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35988
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 9, 2026 09:30, sampling point TC0015 Coliform (TCR)
Absence , sample collected Mar 9, 2026 09:30, sampling point TC0015 E. Coli
Collected
Mar 9, 2026 09:50
Sampling point
TC0020 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35987
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 9, 2026 09:50, sampling point TC0020 Coliform (TCR)
Absence , sample collected Mar 9, 2026 09:50, sampling point TC0020 E. Coli
Collected
Mar 2, 2026 15:10
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35989
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 15:10, sampling point TC0001 Coliform (TCR)
Absence , sample collected Mar 2, 2026 15:10, sampling point TC0001 E. Coli
Collected
Mar 2, 2026 13:40
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35994
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 13:40, sampling point TC0010 Coliform (TCR)
Absence , sample collected Mar 2, 2026 13:40, sampling point TC0010 E. Coli
Collected
Mar 2, 2026 14:32
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-240529-24313
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:32, sampling point TC0011 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:32, sampling point TC0011 E. Coli
Collected
Mar 2, 2026 14:25
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35991
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:25, sampling point TC0012 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:25, sampling point TC0012 E. Coli
Collected
Mar 2, 2026 14:55
Sampling point
TC0014 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35990
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:55, sampling point TC0014 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:55, sampling point TC0014 E. Coli
Collected
Mar 2, 2026 14:43
Sampling point
TC0019 Outside Faucet
Sample type
Routine
Lab sample
BACT-240529-24317
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:43, sampling point TC0019 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:43, sampling point TC0019 E. Coli
Collected
Mar 2, 2026 13:55
Sampling point
TC0021 Outside Faucet
Sample type
Routine
Lab sample
BACT-240529-24318
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 13:55, sampling point TC0021 Coliform (TCR)
Absence , sample collected Mar 2, 2026 13:55, sampling point TC0021 E. Coli
Collected
Mar 2, 2026 14:15
Sampling point
TC0023 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35992
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:15, sampling point TC0023 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:15, sampling point TC0023 E. Coli
Collected
Mar 2, 2026 14:56
Sampling point
TC0028 Outside Faucet
Sample type
Routine
Lab sample
BACT-240529-24314
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:56, sampling point TC0028 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:56, sampling point TC0028 E. Coli
Collected
Mar 2, 2026 14:05
Sampling point
TC0029 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-35993
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:05, sampling point TC0029 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:05, sampling point TC0029 E. Coli
Collected
Mar 2, 2026 14:05
Sampling point
TC0032 Ne End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-240529-24316
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:05, sampling point TC0032 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:05, sampling point TC0032 E. Coli
Collected
Mar 2, 2026 14:18
Sampling point
TC0033 West End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-240529-24315
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 2, 2026 14:18, sampling point TC0033 Coliform (TCR)
Absence , sample collected Mar 2, 2026 14:18, sampling point TC0033 E. Coli