Water Quality in Spearfish, SD (57779)
EPA violation data for public water systems serving ZIP code 57779.
No Health-Based Violations
None of the 3 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are13 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 72% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
347
Population
3
Water Systems
13
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (3)
Saint Onge Sewer & Water Co
Oak Valley Trailer Court
Saint Onge Livestock Cafe
All resolvedContaminants Found
Missed testing deadlines — not a detection of bacteria.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2024
How Does This Compare?
Spearfish (57779) has more violations than 72% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 13, 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.