Lincoln County, South Dakota
10 ZIP codes · Avg score 61/100 · Grade C · Updated 2026-06-04
Lincoln County: 10 ZIP codes, mid-range safety grade.
How Lincoln County Compares
How Lincoln County Compares
Lincoln County scores 1 points above the South Dakota state average (60/100) and 7 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Lincoln County, South Dakota
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 11.3 (asthma 9.5%, diabetes 9.1%)
Estimated additional annual cost per homeowner: $650, driven primarily by flood
Infrastructure: 0.347% avg pipe failure probability, 50% of ZIPs at high risk
54.9% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
→ Stable trendEPA violation counts by year across Lincoln County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 1 violation. Past 5 years: 3 total (3 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: $650
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
25,252 housing units in Lincoln 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 Lincoln County
Remediation costs are relatively manageable for most homeowners in Lincoln 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 Lincoln 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 Lincoln County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | South Lincoln Rural Water System | 5,250 | 7 |
| 2 | Lincoln County Rural Water System | 5,965 | 5 |
| 3 | Worthing | 939 | 3 |
| 4 | Clay Rural Water System | 4,780 | 2 |
| 5 | Beresford | 2,359 | 2 |
16 total water systems serve Lincoln County.
All ZIP Codes in Lincoln County
10 ZIP codes tracked in Lincoln County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 57032 | Harrisburg | 70 | B | 0 | $296K |
| 2 | 57039 | Lennox | 70 | B | 0 | $243K |
| 3 | 57064 | Tea | 70 | B | 0 | $331K |
| 4 | 57034 | Hudson | 66 | C | 0 | $164K |
| 5 | 57013 | Canton | 65 | C | 0 | $225K |
| 6 | 57077 | Worthing | 65 | C | 3 (1 health) | $232K |
| 7 | 57004 | Beresford | 62 | C | 2 | $248K |
| 8 | 57108 | Sioux Falls | 61 | C | 2 (1 health) | $401K |
| 9 | 57021 | Davis | 45 | D | 0 | — |
| 10 | 57027 | Fairview | 40 | D | 0 | $115K |
Recommended Buyer Guides for Lincoln County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 54.9% of homes built before 1978
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Lincoln County, South Dakota
Overview
Lincoln County in South Dakota covers 10 ZIP codes with an average Home Safety Score of C (61/100).
3 of 10 ZIP codes have recorded EPA violations. 2 health-based violations have been documented.
← Back to South 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.