Water Quality in Boulder, CO (80501)
EPA violation data for public water systems serving ZIP code 80501.
No Health-Based Violations
None of the 11 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are8 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 62% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
44,147
Population
11
Water Systems
8
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (11)
Boulder City Of
All resolvedLongmont City Of
All resolvedErie Town Of
Lafayette City Of
All resolvedBoulder County Fairgrounds
Haystack Golf Course
Highlands Camp
Boulder Vly Poultry Farms-Prep
Longmont 2-South
Front Range Water Serive
Etyet C O Haystack Mtn
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 (80501) has more violations than 62% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 8, 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.