Union County, Louisiana
8 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-06-03
Across Union County, EPA compliance data for 8 ZIP codes sits at a moderate level — not alarming, but not uniformly clean either.
How Union County Compares
How Union County Compares
Union County scores 5 points below the Louisiana state average (71/100) and 2 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Union County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.9 (asthma 10.6%, diabetes 18%)
Estimated additional annual cost per homeowner: $1,349, driven primarily by flood
Infrastructure: 0.399% avg pipe failure probability, 57% of ZIPs at high risk
47% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Union County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 51 violations. Past 5 years: 90 total (90 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: $1,349
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
12,605 housing units in Union 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 Union County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
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 Union 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 Union County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Bernice Water System | 1,863 | 89 |
| 2 | Linville-haile Water System | 1,635 | 74 |
| 3 | Marion Water System | 1,512 | 74 |
| 4 | Litroe Water System | 369 | 74 |
| 5 | Sardis Water System | 1,404 | 49 |
23 total water systems serve Union County.
All ZIP Codes in Union County
8 ZIP codes tracked in Union County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 71256 | Lillie | 99 | A | 0 | $50K |
| 2 | 71222 | Bernice | 65 | C | 49 (43 health) | $103K |
| 3 | 71234 | Downsville | 65 | C | 20 (20 health) | $148K |
| 4 | 71260 | Marion | 65 | C | 74 (57 health) | $81K |
| 5 | 71280 | Sterlington | 65 | C | 21 (20 health) | $260K |
| 6 | 71240 | Fairbanks | 60 | C | 0 | — |
| 7 | 71241 | Farmerville | 55 | C | 40 (32 health) | $130K |
| 8 | 71277 | Spearsville | 50 | D | 0 | $85K |
Recommended Buyer Guides for Union County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- 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 Union County, Louisiana
Overview
Union County in Louisiana covers 8 ZIP codes with an average Home Safety Score of C (66/100).
5 of 8 ZIP codes have recorded EPA violations. 172 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.