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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 121–135 of 3,897 samples on record, newest first.

Routine (15).

Coliform and microbial sample results for City of Madison, 121 to 135 of 3,897 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Dec 9, 2025 08:41
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-240529-24304
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 08:41, sampling point TC0011 Coliform (TCR)
Absence , sample collected Dec 9, 2025 08:41, sampling point TC0011 E. Coli
Collected
Dec 9, 2025 14:50
Sampling point
TC0015 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36108
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 14:50, sampling point TC0015 Coliform (TCR)
Absence , sample collected Dec 9, 2025 14:50, sampling point TC0015 E. Coli
Collected
Dec 9, 2025 14:35
Sampling point
TC0016 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36109
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 14:35, sampling point TC0016 Coliform (TCR)
Absence , sample collected Dec 9, 2025 14:35, sampling point TC0016 E. Coli
Collected
Dec 9, 2025 09:06
Sampling point
TC0021 Outside Faucet
Sample type
Routine
Lab sample
BACT-240529-24305
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 09:06, sampling point TC0021 Coliform (TCR)
Absence , sample collected Dec 9, 2025 09:06, sampling point TC0021 E. Coli
Collected
Dec 9, 2025 09:21
Sampling point
TC0031 SW End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-240529-24302
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 09:21, sampling point TC0031 Coliform (TCR)
Absence , sample collected Dec 9, 2025 09:21, sampling point TC0031 E. Coli
Collected
Dec 9, 2025 09:32
Sampling point
TC0032 Ne End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-240529-24306
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 09:32, sampling point TC0032 Coliform (TCR)
Absence , sample collected Dec 9, 2025 09:32, sampling point TC0032 E. Coli
Collected
Dec 9, 2025 09:46
Sampling point
TC0033 West End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-240529-24303
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 09:46, sampling point TC0033 Coliform (TCR)
Absence , sample collected Dec 9, 2025 09:46, sampling point TC0033 E. Coli
Collected
Dec 3, 2025 12:15
Sampling point
TC0001 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36117
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 12:15, sampling point TC0001 Coliform (TCR)
Absence , sample collected Dec 3, 2025 12:15, sampling point TC0001 E. Coli
Collected
Dec 3, 2025 13:35
Sampling point
TC0010 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36114
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 13:35, sampling point TC0010 Coliform (TCR)
Absence , sample collected Dec 3, 2025 13:35, sampling point TC0010 E. Coli
Collected
Dec 3, 2025 13:20
Sampling point
TC0011 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36115
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 13:20, sampling point TC0011 Coliform (TCR)
Absence , sample collected Dec 3, 2025 13:20, sampling point TC0011 E. Coli
Collected
Dec 3, 2025 12:55
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36116
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 12:55, sampling point TC0012 Coliform (TCR)
Absence , sample collected Dec 3, 2025 12:55, sampling point TC0012 E. Coli
Collected
Dec 3, 2025 13:20
Sampling point
TC0013 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36111
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 13:20, sampling point TC0013 Coliform (TCR)
Absence , sample collected Dec 3, 2025 13:20, sampling point TC0013 E. Coli
Collected
Dec 3, 2025 13:35
Sampling point
TC0029 Outside Faucet
Sample type
Routine
Lab sample
BACT-250708-36110
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 13:35, sampling point TC0029 Coliform (TCR)
Absence , sample collected Dec 3, 2025 13:35, sampling point TC0029 E. Coli
Collected
Dec 3, 2025 13:15
Sampling point
TC0032 Ne End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-250708-36112
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 13:15, sampling point TC0032 Coliform (TCR)
Absence , sample collected Dec 3, 2025 13:15, sampling point TC0032 E. Coli
Collected
Dec 3, 2025 13:00
Sampling point
TC0033 West End of BLDG Faucet
Sample type
Routine
Lab sample
BACT-250708-36113
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 3, 2025 13:00, sampling point TC0033 Coliform (TCR)
Absence , sample collected Dec 3, 2025 13:00, sampling point TC0033 E. Coli