Water Quality in Boulder, CO (80455)
EPA violation data for public water systems serving ZIP code 80455.
No Health-Based Violations
None of the 7 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are28 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 84% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
501
Population
7
Water Systems
28
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (7)
Boulder City Of
All resolvedLongmont City Of
All resolvedErie Town Of
Lafayette City Of
All resolvedJamestown Town Of
All resolvedCal Wood
Balarat Outdoor Laboratory
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Used to disinfect water — generally safe at regulated levels.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Boulder (80455) has more violations than 84% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 28, most of which are monitoring/reporting issues.
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.