Water Quality in BOULDER, CO (80302)
EPA violation data for public water systems serving ZIP code 80302.
21
Total Violations
0
Health-Based
21
Monitoring / Reporting
19
Resolved
What does this mean?
19 of 21 violations have been resolved. None of these are health-based violations — no contaminant levels exceeded federal safety limits. The remaining 21 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 (21 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Active | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Sep 30, 2024 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Sep 30, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Sep 30, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Sep 30, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Sep 30, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(1)
Consumer Confidence Rule
72
2024(9)
Lead and Copper Rule
52
Interim Enhanced Surface Water Treatment Rule
38
Interim Enhanced Surface Water Treatment Rule
38
Interim Enhanced Surface Water Treatment Rule
38
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
Consumer Confidence Rule
71
How Does This Compare?
BOULDER (80302) has 21 recorded violations, none of which are health-based. 2 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
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
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.