Cass County, Minnesota
11 ZIP codes · Avg score 69/100 · Grade C · Updated 2026-07-19
ZipCheckup grade for Cass: C.
A mixed picture - some signals here are worth your attention.
Spanning 11 ZIP codes, Cass County lands near the national median for water safety - compliance results are mixed, and the county's middle-grade standing reflects genuine variability rather than a single systemic problem.
How Cass County Compares
How Cass County Compares
Cass County scores 7 points above the Minnesota state average (62/100) and 1 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Cass County, Minnesota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.7 (asthma 10.3%, diabetes 13.9%)
Estimated additional annual cost per homeowner: $655, driven primarily by sea_level
Infrastructure: 0.344% avg pipe failure probability, 10% of ZIPs at high risk
48.2% 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: $655
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
17,085 housing units in Cass 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 Cass County
Remediation costs are relatively manageable for most homeowners in Cass 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 Cass County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Cass County
8 community water systems serving Cass County.
- B
- D
- B
- B
- B
- B
Show all 8 water systems
- B
- B
9 total water systems serve Cass County.
Systems with the most violations in Cass County
2 water systems with recorded EPA violations.
- B
- B
All ZIP Codes in Cass County
11 ZIP codes tracked in Cass County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 56452 | Hackensack | 83 | B | 0 | $304K |
| 2 | 56484 | Walker | 83 | B | 0 | $293K |
| 3 | 56633 | Cass Lake | 83 | B | 0 | $158K |
| 4 | 56672 | Remer | 81 | B | 4 | $267K |
| 5 | 56473 | Pillager | 75 | B | 1 | $263K |
| 6 | 56435 | Backus | 72 | B | 0 | $230K |
| 7 | 56655 | Longville | 72 | B | 0 | $302K |
| 8 | 56430 | Ah Gwah Ching | 53 | D | 0 | — |
| 9 | 56626 | Bena | 53 | D | 0 | $184K |
| 10 | 56641 | Federal Dam | 53 | D | 0 | $166K |
| 11 | 56663 | Pennington | 53 | D | 0 | — |
Recommended Buyer Guides for Cass County
Editorial-only picks, screened against the EPA detections on file.
- Best Water Testing Kits — Baseline water quality check for your ZIP
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant peace of mind
Deep Dive Reports
Detailed analysis for Cass County, Minnesota
Overview
Cass County in Minnesota covers 11 ZIP codes with an average Home Safety Score of C (69/100).
2 of 11 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to Minnesota 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.