Water Quality in Greenwood, IN (46321)
EPA violation data for public water systems serving ZIP code 46321.
No Health-Based Violations
None of the 9 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are16 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 73% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
23,733
Population
9
Water Systems
16
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (9)
Indiana American Water - Northwest
Hammond Water Works Department
All resolvedCrown Point Water Works
All resolvedSchererville Water Department
Munster Water Company
Calumet Council Boy Scouts
Calumet Council Boy Scouts
Little Calumet River Basin-Artesian Well
All resolvedMarine Drive Mobile Home Park
Contaminants Found
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Greenwood (46321) has more violations than 73% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 16, 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.