Lincoln County, Louisiana
8 ZIP codes · Avg score 84/100 · Grade B · Updated 2026-06-04
Lincoln County earns a high water safety grade — 8 ZIP codes tracked, virtually all compliant.
How Lincoln County Compares
How Lincoln County Compares
Lincoln County scores 13 points above the Louisiana state average (71/100) and 16 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Lincoln County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.3 (asthma 10.8%, diabetes 13.5%)
Estimated additional annual cost per homeowner: $743, driven primarily by flood
Infrastructure: 0.336% avg pipe failure probability, 25% of ZIPs at high risk
55.2% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Lincoln County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 22 violations. Past 5 years: 52 total (52 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: $743
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
20,861 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 | Greater Ward 1 Waterworks District | 3,333 | 53 |
| 2 | Dubach Water System | 1,218 | 45 |
| 3 | Hico Water System | 1,530 | 45 |
| 4 | Mineral Springs Water System | 900 | 45 |
| 5 | Lincoln Parish Waterworks District #1 | 570 | 45 |
23 total water systems serve Lincoln County.
All ZIP Codes in Lincoln County
8 ZIP codes tracked in Lincoln County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 71272 | Ruston | 99 | A | 0 | — |
| 2 | 71273 | Ruston | 95 | A | 0 | — |
| 3 | 71275 | Simsboro | 93 | A | 3 (2 health) | $94K |
| 4 | 71270 | Ruston | 90 | A | 0 | $219K |
| 5 | 71245 | Grambling | 86 | A | 10 (3 health) | $146K |
| 6 | 71227 | Choudrant | 73 | B | 8 (5 health) | $210K |
| 7 | 71235 | Dubach | 70 | B | 45 (32 health) | $156K |
| 8 | 71207 | Monroe | 66 | C | 11 (9 health) | — |
Recommended Buyer Guides for Lincoln County
Independent picks. EPA-grounded. Matched here.
- Best Lead Paint Test Kits — 55.2% 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 Lincoln County, Louisiana
Overview
Lincoln County in Louisiana covers 8 ZIP codes with an average Home Safety Score of B (84/100).
5 of 8 ZIP codes have recorded EPA violations. 51 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.