Sheridan County, North Dakota
5 ZIP codes · Avg score 53/100 · Grade D · Updated 2026-06-04
Monitoring across Sheridan County's 5 ZIP codes reveals a persistent pattern of below-average water quality — multiple areas carry documented health violations, and the data has shown little improvement over recent reporting cycles.
How Sheridan County Compares
How Sheridan County Compares
Sheridan County scores 3 points below the North Dakota state average (56/100) and 15 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Sheridan County, North Dakota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.3 (asthma 9.9%, diabetes 13.9%)
Estimated additional annual cost per homeowner: $518, driven primarily by water_lead
Infrastructure: 0.404% avg pipe failure probability, 60% of ZIPs at high risk
70.2% of homes built before 1978 (lead paint era)
Violation History (2022–2023)
→ Stable trendEPA violation counts by year across Sheridan County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 3 violations. Past 5 years: 6 total (6 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $518
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
1,044 housing units in Sheridan 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 Sheridan County
Remediation costs are relatively manageable for most homeowners in Sheridan 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 Sheridan County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 4 systems in Sheridan County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Mercer | 94 | 10 |
| 2 | GOODRICH CITY OF | 98 | 5 |
| 3 | City of Mc Clusky | 380 | 1 |
| 4 | Central Plains Water District | 3,504 | 0 |
All ZIP Codes in Sheridan County
5 ZIP codes tracked in Sheridan County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 58444 | Goodrich | 64 | C | 5 (2 health) | $57K |
| 2 | 58463 | Mcclusky | 64 | C | 1 | $83K |
| 3 | 58559 | Mercer | 58 | C | 10 | $282K |
| 4 | 58430 | Denhoff | 40 | D | 0 | $131K |
| 5 | 58451 | Hurdsfield | 40 | D | 0 | $113K |
Recommended Buyer Guides for Sheridan County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Lead Paint Test Kits — 70.2% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Sheridan County, North Dakota
Overview
Sheridan County in North Dakota covers 5 ZIP codes with an average Home Safety Score of D (53/100).
3 of 5 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← 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.
What You Can Do
Sheridan County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
70.2% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.