Water Quality in Caledonia, MN (55921)
EPA violation data for public water systems serving ZIP code 55921.
24
Total Violations
0
Health-Based
24
Monitoring / Reporting
18
Resolved
What does this mean?
18 of 24 violations have been resolved. None of these are health-based violations — no contaminant levels exceeded federal safety limits. The remaining 24 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (24 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Nitrate | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Public Notice | Monitoring | N/A | N/A | Apr 19, 2025 | Active | N/A |
| Public Notice | Monitoring | N/A | N/A | Apr 19, 2025 | Active | N/A |
| Public Notice | Monitoring | N/A | N/A | Apr 19, 2025 | Active | N/A |
| Public Notice | Monitoring | N/A | N/A | Apr 19, 2025 | Active | N/A |
| Public Notice | Monitoring | N/A | N/A | Apr 19, 2025 | Active | N/A |
| Public Notice | Monitoring | N/A | N/A | Apr 19, 2025 | Active | N/A |
| Nitrate | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
Lead & Copper Levels
Violation Timeline
2025(7)
Nitrate
03
Public Notice
75
Public Notice
75
Public Notice
75
Public Notice
75
Public Notice
75
Public Notice
75
2024(8)
Nitrate
03
Nitrate
03
Nitrate
03
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
How Does This Compare?
Caledonia (55921) has 24 recorded violations, none of which are health-based. 6 remain unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.
Targets:Nitrate, Nitrite, Dissolved Solids
Look for:NSF/ANSI 58 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.