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
MS0730010 , Lake Arrowhead
1 of 369 results on record was positive for coliform or another organism the agency tests for. The most recent was October 23, 2007.
They fall across 1 of the 282 samples on record.
Every sample on record, October 8, 2003 to July 14, 2026. No date range is applied.
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 16–30 of 282 samples on record, newest first.
Routine (15).
| Result | Organism |
|---|---|
|
|
| Absence , sample collected Apr 2, 2025 11:35, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Apr 2, 2025 11:35, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Mar 4, 2025 09:10, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Mar 4, 2025 09:10, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Feb 5, 2025 11:30, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Feb 5, 2025 11:30, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Jan 8, 2025 10:58, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Jan 8, 2025 10:58, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Dec 4, 2024 11:10, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Dec 4, 2024 11:10, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Nov 6, 2024 10:45, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Nov 6, 2024 10:45, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Oct 15, 2024 11:20, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Oct 15, 2024 11:20, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Sep 10, 2024 10:50, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Sep 10, 2024 10:50, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Aug 7, 2024 10:05, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Aug 7, 2024 10:05, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Jul 10, 2024 11:40, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Jul 10, 2024 11:40, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Jun 12, 2024 11:10, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Jun 12, 2024 11:10, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected May 8, 2024 09:30, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected May 8, 2024 09:30, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Apr 17, 2024 11:40, sampling point TCR20060011 | Coliform (TCR) |
| Absence , sample collected Apr 17, 2024 11:40, sampling point TCR20060011 | E. Coli |
|
|
| Absence , sample collected Mar 6, 2024 11:50, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Mar 6, 2024 11:50, sampling point TC0005 | E. Coli |
|
|
| Absence , sample collected Feb 13, 2024 11:15, sampling point TC0005 | Coliform (TCR) |
| Absence , sample collected Feb 13, 2024 11:15, sampling point TC0005 | E. Coli |
-
- Collected
- Apr 2, 2025 11:35
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-220211-2833
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2025 – Apr 30, 2025
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Mar 4, 2025 09:10
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-220211-2839
- Laboratory
- MSDH Lab
- Monitoring period
- Mar 1, 2025 – Mar 31, 2025
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Feb 5, 2025 11:30
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-220211-2832
- Laboratory
- MSDH Lab
- Monitoring period
- Feb 1, 2025 – Feb 28, 2025
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Jan 8, 2025 10:58
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-220211-2831
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Jan 31, 2025
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Dec 4, 2024 11:10
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-220211-2830
- Laboratory
- MSDH Lab
- Monitoring period
- Dec 1, 2024 – Dec 31, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Nov 6, 2024 10:45
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29013
- Laboratory
- MSDH Lab
- Monitoring period
- Nov 1, 2024 – Nov 30, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Oct 15, 2024 11:20
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-220211-2829
- Laboratory
- MSDH Lab
- Monitoring period
- Oct 1, 2024 – Oct 31, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Sep 10, 2024 10:50
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29012
- Laboratory
- MSDH Lab
- Monitoring period
- Sep 1, 2024 – Sep 30, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Aug 7, 2024 10:05
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29011
- Laboratory
- MSDH Lab
- Monitoring period
- Aug 1, 2024 – Aug 31, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Jul 10, 2024 11:40
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29010
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2024 – Jul 31, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Jun 12, 2024 11:10
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29009
- Laboratory
- MSDH Lab
- Monitoring period
- Jun 1, 2024 – Jun 30, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- May 8, 2024 09:30
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29008
- Laboratory
- MSDH Lab
- Monitoring period
- May 1, 2024 – May 31, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Apr 17, 2024 11:40
- Sampling point
- TCR20060011
- Sample type
- Routine
- Lab sample
- BACT-210901-29007
- Laboratory
- MSDH Lab
- Monitoring period
- Apr 1, 2024 – Apr 30, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Mar 6, 2024 11:50
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29006
- Laboratory
- MSDH Lab
- Monitoring period
- Mar 1, 2024 – Mar 31, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli
-
- Collected
- Feb 13, 2024 11:15
- Sampling point
- TC0005 Outside Faucet
- Sample type
- Routine
- Lab sample
- BACT-210901-29005
- Laboratory
- MSDH Lab
- Monitoring period
- Feb 1, 2024 – Feb 29, 2024
-
- Result
- Absence
- Organism
- Coliform (TCR)
-
- Result
- Absence
- Organism
- E. Coli