Plaquemines County, Louisiana
5 ZIP codes · Avg score 56/100 · Grade C · Updated 2026-06-04
Within Plaquemines County, safety data across 5 ZIP codes suggests a fair but uneven system — violations are present and worth checking at the ZIP level.
How Plaquemines County Compares
How Plaquemines County Compares
Plaquemines County scores 15 points below the Louisiana state average (71/100) and 12 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Plaquemines County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.4 (asthma 10%, diabetes 14.1%)
Estimated additional annual cost per homeowner: $4,898, driven primarily by sea_level
Infrastructure: 0.33% avg pipe failure probability, 20% of ZIPs at high risk
38.7% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Plaquemines County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 12 violations. Past 5 years: 39 total (39 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: $4,898
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,153 housing units in Plaquemines 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 Plaquemines County
Remediation costs are relatively manageable for most homeowners in Plaquemines 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 Plaquemines 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 Plaquemines County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Belle Chasse Water District | 19,644 | 34 |
| 2 | Dalcour Waterworks District | 1,248 | 34 |
| 3 | Port Sulphur Water District | 10,308 | 34 |
| 4 | Pointe a La Hache Water System | 882 | 34 |
| 5 | New Orleans Carrollton Water Works | 334,903 | 18 |
9 total water systems serve Plaquemines County.
All ZIP Codes in Plaquemines County
5 ZIP codes tracked in Plaquemines County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70143 | New Orleans | 84 | B | 18 (8 health) | — |
| 2 | 70093 | Belle Chasse | 66 | C | 17 (15 health) | — |
| 3 | 70037 | Belle Chasse | 50 | D | 17 (15 health) | $350K |
| 4 | 70040 | Braithwaite | 42 | D | 0 | $112K |
| 5 | 70085 | Saint Bernard | 37 | F | 0 | $150K |
Recommended Buyer Guides for Plaquemines County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this county.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Plaquemines County, Louisiana
Overview
Plaquemines County in Louisiana covers 5 ZIP codes with an average Home Safety Score of C (56/100).
3 of 5 ZIP codes have recorded EPA violations. 38 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.