Water Quality in Boulder, CO (80471)

EPA violation data for public water systems serving ZIP code 80471.

No Health-Based Violations

None of the 7 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are9 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 65% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

0

7

Water Systems

9

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (7)

Boulder City Of

All resolved
Surface water 166,080 people served
2 violations (5yr) · All resolved
Lead tested: 2 ppb (limit: 15 ppb)

Longmont City Of

All resolved
Surface water 102,866 people served
2 violations (5yr) · All resolved
Lead tested: 1.6 ppb (limit: 15 ppb)

Erie Town Of

Surface water 40,061 people served
0 violations
Lead tested: 2.6 ppb (limit: 15 ppb)

Lafayette City Of

All resolved
Surface water 28,700 people served
4 violations (5yr) · All resolved
Lead tested: 2 ppb (limit: 15 ppb)

Canyon Tavern The

All resolved
Groundwater 128 people served
1 violation (5yr) · All resolved

Wonder Vu Cafe

Groundwater 50 people served
0 violations

Pactolus Ice Skating Lake

Groundwater 25 people served
0 violations

Contaminants Found

Surface Water Treatment RuleMonitoring
2 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

2 violations
All resolved
Interim Enhanced Surface Water Treatment RuleMonitoring
1 violation
All resolved
TTHMMonitoring
1 violation
All resolved
Total Haloacetic Acids (HAA5)Monitoring
1 violation
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

1 violation
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
2.6 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Boulder (80471) has more violations than 65% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 9, most of which are monitoring/reporting issues.

Fewer violations 65th percentile More violations

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.

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