Foster County, North Dakota
4 ZIP codes · Avg score 56/100 · Grade C · Updated 2026-06-03
Water monitoring across Foster County's 4 ZIP codes paints a mid-range picture — solid compliance in some zones, documented concerns in others; most violations on record are concentrated in specific prior years rather than spread evenly across the full compliance history, and the overall county grade has held steady in the middle tier without major shifts in either direction.
How Foster County Compares
How Foster County Compares
Foster County scores 0 points above the North Dakota state average (56/100) and 12 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 13.5 (asthma 10%, diabetes 11.8%)
Estimated additional annual cost per homeowner: $663, driven primarily by water_lead
Infrastructure: 0.412% avg pipe failure probability, 75% of ZIPs at high risk
76.8% 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: $663
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,832 housing units in Foster 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 Foster County
Remediation costs are relatively manageable for most homeowners in Foster 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 Foster 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 Foster County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Stutsman Rural Water District | 5,550 | 1 |
| 2 | Greater Ramsey Water District | 5,280 | 1 |
| 3 | Central Plains Water District | 3,504 | 1 |
| 4 | City of Carrington | 2,065 | 1 |
| 5 | City of Glenfield | 91 | 0 |
All ZIP Codes in Foster County
4 ZIP codes tracked in Foster County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 58443 | Glenfield | 70 | B | 0 | $56K |
| 2 | 58445 | Grace City | 53 | D | 0 | $120K |
| 3 | 58464 | Mchenry | 53 | D | 0 | $156K |
| 4 | 58421 | Carrington | 48 | D | 1 | $169K |
Recommended Buyer Guides for Foster County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 76.8% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Overview
Foster County in North Dakota covers 4 ZIP codes with an average Home Safety Score of C (56/100).
1 of 4 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← Back to North Dakota 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.