Water Quality in Boulder, CO (80303)
EPA violation data for public water systems serving ZIP code 80303.
No Health-Based Violations
None of the 26 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are47 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 90% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
24,996
Population
26
Water Systems
47
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (26)
Boulder City Of
All resolvedLongmont City Of
All resolvedErie Town Of
Lafayette City Of
All resolvedShannon Wsd
East Boulder County Wd
All resolvedEldorado Corner Market
All resolvedUnitarian Universalist Church
All resolvedBari-Don Knoll
City On The Hill
All resolvedFlatirons Baptist Church
Sgry
Stepping Stones Pre-Sch & D C
Flats Beer Garden The
Westview Church
1610 Llc (Willow Manor Apts)
All resolvedBart'S Beef
Wild Basin Entrance
Rollinsville W.C.
Boulder - Housing Authority
South Vale Wtr & San Dist
Mesa Office Commons
Aquarian Water The
Stepping Stones Pre School
Panorama Park Wua
South Vale Hoa
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.
At high levels, nitrate can cause blue baby syndrome in infants.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Boulder (80303) has more violations than 90% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 47, 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.