Sherman County, Nebraska
5 ZIP codes · Avg score 72/100 · Grade B · Updated 2026-06-03
In current tracking cycles, Sherman County — spanning 5 ZIP codes — records above-average water quality outcomes; the county's compliance history over recent years shows few departures from federal standards.
How Sherman County Compares
How Sherman County Compares
Sherman County scores 7 points above the Nebraska state average (65/100) and 4 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Sherman County, Nebraska
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.9 (asthma 9.3%, diabetes 13.7%)
Estimated additional annual cost per homeowner: $890, driven primarily by energy_code_gap
Infrastructure: 0.444% avg pipe failure probability, 100% of ZIPs at high risk
79.2% of homes built before 1978 (lead paint era)
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $890
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,720 housing units in Sherman County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Sherman County
Remediation costs are relatively manageable for most homeowners in Sherman County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Sherman County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Sherman County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Loup City, | 1,045 | 1 |
| 2 | Sherman Lake Homes | 38 | 1 |
| 3 | Rockville, Village of | 90 | 1 |
| 4 | Ashton, Village of | 196 | 0 |
| 5 | LITCHFIELD, VILLAGE OF | 151 | 0 |
All ZIP Codes in Sherman County
5 ZIP codes tracked in Sherman County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 68817 | Ashton | 83 | B | 0 | $92K |
| 2 | 68852 | Litchfield | 82 | B | 0 | $148K |
| 3 | 68853 | Loup City | 81 | B | 1 | $127K |
| 4 | 68871 | Rockville | 63 | C | 1 (1 health) | $118K |
| 5 | 68844 | Hazard | 53 | D | 0 | $259K |
Recommended Buyer Guides for Sherman County
Filtered against federal data, fitted to local risks.
- Best Lead Paint Test Kits — 79.2% of homes built before 1978
Deep Dive Reports
Detailed analysis for Sherman County, Nebraska
Overview
Sherman County in Nebraska covers 5 ZIP codes with an average Home Safety Score of B (72/100).
2 of 5 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← Back to Nebraska water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.