Winn County, Louisiana
7 ZIP codes · Avg score 72/100 · Grade B · Updated 2026-06-04
Recent water monitoring in Winn County shows 7 ZIP codes with consistently safe results.
How Winn County Compares
How Winn County Compares
Winn County scores 1 points above the Louisiana state average (71/100) and 4 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Winn County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.8 (asthma 10.2%, diabetes 17.1%)
Estimated additional annual cost per homeowner: $1,264, driven primarily by flood
Infrastructure: 0.457% avg pipe failure probability, 71% of ZIPs at high risk
60.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Winn County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 42 violations. Past 5 years: 96 total (96 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
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: $1,264
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,282 housing units in Winn 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 Winn County
Remediation costs are relatively manageable for most homeowners in Winn 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 Winn 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 Winn County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | West Winn Water System Inc. | 2,064 | 42 |
| 2 | City of Winnfield Water System | 7,194 | 41 |
| 3 | Tannehill Water System | 1,932 | 41 |
| 4 | Atlanta Water Supply | 900 | 41 |
| 5 | Village of Sikes Water System | 639 | 35 |
14 total water systems serve Winn County.
All ZIP Codes in Winn County
7 ZIP codes tracked in Winn County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 71031 | Goldonna | 89 | A | 1 (1 health) | $77K |
| 2 | 71422 | Dodson | 89 | A | 6 (5 health) | $112K |
| 3 | 71410 | Calvin | 70 | B | 25 (18 health) | — |
| 4 | 71440 | Joyce | 66 | C | 23 (21 health) | — |
| 5 | 71473 | Sikes | 66 | C | 35 (21 health) | $65K |
| 6 | 71479 | Tullos | 66 | C | 23 (19 health) | $102K |
| 7 | 71483 | Winnfield | 60 | C | 41 (34 health) | $120K |
Recommended Buyer Guides for Winn County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- Best Lead Paint Test Kits — 60.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- 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 Winn County, Louisiana
Overview
Winn County in Louisiana covers 7 ZIP codes with an average Home Safety Score of B (72/100).
7 of 7 ZIP codes have recorded EPA violations. 119 health-based violations have been documented.
← Back to Louisiana 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.