Water Quality in Columbia, MD (20763)

EPA violation data for public water systems serving ZIP code 20763.

No Health-Based Violations

None of the 2 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There is1 monitoring/reporting violation (missed testing deadlines), all resolved.

Better than 29% of US ZIP codes.

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

2,601

Population

Water Systems

Violations (5yr)

Health-Based

Location

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Water Systems Serving This Area (2)

Howard County D.P.W. Distribution

All resolved

Purchased surface water 286,158 people served

1 violation (5yr) · All resolved

Ellicott City

Purchased surface water 46,000 people served

0 violations

Contaminants Found

Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

1 violation

All resolved

How Does This Compare?

Columbia (20763) has more violations than 29% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 1, most of which are monitoring/reporting issues.

Fewer violations 29th 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.