Water Quality in Columbia, MD (21737)
EPA violation data for public water systems serving ZIP code 21737.
Past Health-Based Violations
2 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 5 monitoring/reporting violations.
More violations than 60% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
2,474
Population
11
Water Systems
7
Violations (5yr)
2
Health-Based
Location
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Water Systems Serving This Area (11)
Howard County D.P.W. Distribution
All resolvedEllicott City
Inwood Village Center
1 health-basedHigh'S-10 Oaks Plaza
Ten Oaks Triangle Shopping Center
Dunkin Donuts
Belisimos Pizza - Subs Moved To 1061304
Ten Oaks Plaza
1 health-basedGlenelg Um Church And Nursery School
Ten Oaks Liquors
3881 Ten Oaks Management
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Annual water quality report delivery requirement.
How Does This Compare?
Columbia (21737) has more violations than 60% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 7.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.