Water Quality in BOULDER, CO (80309)
EPA violation data for public water systems serving ZIP code 80309.
12
Total Violations
12
Health-Based
0
Monitoring / Reporting
12
Resolved
What does this mean?
12 of 12 violations have been resolved. 12 are health-based violations, meaning contaminant levels exceeded federal safety limits. Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (12 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 7, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 7, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 7, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 7, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Health-Based | N/A | N/A | May 31, 2024 | Resolved | N/A |
Violation Timeline
2024(12)
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
Surface Water Treatment Rule
41
How Does This Compare?
BOULDER (80309) has 12 recorded violations, including 12 health-based. All violations have been resolved, which is a positive sign for current water quality. 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.
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.