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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

MS0530017 , Rock Hill Water Association

2 of 670 results on record were positive for coliform or another organism the agency tests for. The most recent was September 12, 2011.

They fall across 2 of the 497 samples on record.

Every sample on record, October 7, 2003 to July 27, 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 25, 2024 and September 25, 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 43 samples in this date range, newest first.

Routine (15).

Coliform and microbial sample results for Rock Hill Water Association, 1 to 15 of 43 samples shown, newest first. A result is a presence-or-absence verdict and carries no measured amount.
Result Organism
Collected
Jul 27, 2026 11:30
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250812-44249
Laboratory
MSDH Lab
Monitoring period
Jul 1, 2026 – Jul 31, 2026
Absence , sample collected Jul 27, 2026 11:30, sampling point TC0004 Coliform (TCR)
Absence , sample collected Jul 27, 2026 11:30, sampling point TC0004 E. Coli
Collected
Jun 3, 2026 22:35
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38152
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 3, 2026 22:35, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jun 3, 2026 22:35, sampling point TC0003 E. Coli
Collected
Jun 3, 2026 11:15
Sampling point
TC0008 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38153
Laboratory
MSDH Lab
Monitoring period
Jun 1, 2026 – Jun 30, 2026
Absence , sample collected Jun 3, 2026 11:15, sampling point TC0008 Coliform (TCR)
Absence , sample collected Jun 3, 2026 11:15, sampling point TC0008 E. Coli
Collected
May 12, 2026 10:20
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38150
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 12, 2026 10:20, sampling point TC0003 Coliform (TCR)
Absence , sample collected May 12, 2026 10:20, sampling point TC0003 E. Coli
Collected
May 12, 2026 11:00
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38151
Laboratory
MSDH Lab
Monitoring period
May 1, 2026 – May 31, 2026
Absence , sample collected May 12, 2026 11:00, sampling point TC0009 Coliform (TCR)
Absence , sample collected May 12, 2026 11:00, sampling point TC0009 E. Coli
Collected
Apr 13, 2026 11:20
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38149
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 13, 2026 11:20, sampling point TC0004 Coliform (TCR)
Absence , sample collected Apr 13, 2026 11:20, sampling point TC0004 E. Coli
Collected
Apr 13, 2026 10:30
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38148
Laboratory
MSDH Lab
Monitoring period
Apr 1, 2026 – Apr 30, 2026
Absence , sample collected Apr 13, 2026 10:30, sampling point TC0009 Coliform (TCR)
Absence , sample collected Apr 13, 2026 10:30, sampling point TC0009 E. Coli
Collected
Mar 10, 2026 10:20
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38164
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 10, 2026 10:20, sampling point TC0003 Coliform (TCR)
Absence , sample collected Mar 10, 2026 10:20, sampling point TC0003 E. Coli
Collected
Mar 10, 2026 11:30
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38165
Laboratory
MSDH Lab
Monitoring period
Mar 1, 2026 – Mar 31, 2026
Absence , sample collected Mar 10, 2026 11:30, sampling point TC0012 Coliform (TCR)
Absence , sample collected Mar 10, 2026 11:30, sampling point TC0012 E. Coli
Collected
Feb 9, 2026 09:35
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38160
Laboratory
MSDH Lab
Monitoring period
Feb 1, 2026 – Feb 28, 2026
Absence , sample collected Feb 9, 2026 09:35, sampling point TC0003 Coliform (TCR)
Absence , sample collected Feb 9, 2026 09:35, sampling point TC0003 E. Coli
Collected
Feb 9, 2026 10:20
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38161
Laboratory
MSDH Lab
Monitoring period
Feb 1, 2026 – Feb 28, 2026
Absence , sample collected Feb 9, 2026 10:20, sampling point TC0004 Coliform (TCR)
Absence , sample collected Feb 9, 2026 10:20, sampling point TC0004 E. Coli
Collected
Jan 13, 2026 10:35
Sampling point
TC0003 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38158
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 13, 2026 10:35, sampling point TC0003 Coliform (TCR)
Absence , sample collected Jan 13, 2026 10:35, sampling point TC0003 E. Coli
Collected
Jan 13, 2026 11:20
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38159
Laboratory
MSDH Lab
Monitoring period
Jan 1, 2026 – Jan 31, 2026
Absence , sample collected Jan 13, 2026 11:20, sampling point TC0012 Coliform (TCR)
Absence , sample collected Jan 13, 2026 11:20, sampling point TC0012 E. Coli
Collected
Dec 9, 2025 09:40
Sampling point
TC0004 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38147
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 09:40, sampling point TC0004 Coliform (TCR)
Absence , sample collected Dec 9, 2025 09:40, sampling point TC0004 E. Coli
Collected
Dec 9, 2025 09:00
Sampling point
TC0009 Outside Faucet
Sample type
Routine
Lab sample
BACT-250730-38146
Laboratory
MSDH Lab
Monitoring period
Dec 1, 2025 – Dec 31, 2025
Absence , sample collected Dec 9, 2025 09:00, sampling point TC0009 Coliform (TCR)
Absence , sample collected Dec 9, 2025 09:00, sampling point TC0009 E. Coli