Catahoula County, Louisiana
7 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-06-04
Across Catahoula County, EPA compliance data for 7 ZIP codes sits at a moderate level — not alarming, but not uniformly clean either.
How Catahoula County Compares
How Catahoula County Compares
Catahoula County scores 11 points below the Louisiana state average (71/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Catahoula County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 17.2 (asthma 10.7%, diabetes 18%)
Estimated additional annual cost per homeowner: $2,620, driven primarily by flood
Infrastructure: 0.413% avg pipe failure probability, 50% of ZIPs at high risk
66.8% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Catahoula County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 20 violations. Past 5 years: 35 total (35 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: $2,620
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
5,103 housing units in Catahoula 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 Catahoula 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 Catahoula 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 Catahoula County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Nebo Water System Inc. | 2,460 | 33 |
| 2 | Black River Water System | 2,256 | 33 |
| 3 | Red Hill Waterworks Inc. | 1,914 | 33 |
| 4 | Village of Harrisonburg Water System | 1,530 | 33 |
| 5 | Lake Bruin Water District #1 | 1,275 | 33 |
14 total water systems serve Catahoula County.
All ZIP Codes in Catahoula County
7 ZIP codes tracked in Catahoula County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 71368 | Sicily Island | 75 | B | 10 (4 health) | $90K |
| 2 | 71468 | Provencal | 70 | B | 25 (22 health) | $211K |
| 3 | 71340 | Harrisonburg | 60 | C | 33 (24 health) | $104K |
| 4 | 71401 | Aimwell | 60 | C | 0 | — |
| 5 | 71377 | Wildsville | 52 | D | 0 | — |
| 6 | 71425 | Enterprise | 52 | D | 0 | — |
| 7 | 71343 | Jonesville | 48 | D | 2 | $86K |
Recommended Buyer Guides for Catahoula County
Four sources — EPA, NSF, FEMA, CDC — drive the match.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 66.8% 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 Catahoula County, Louisiana
Overview
Catahoula County in Louisiana covers 7 ZIP codes with an average Home Safety Score of C (60/100).
4 of 7 ZIP codes have recorded EPA violations. 50 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.