St. James County, Louisiana
14 ZIP codes · Avg score 56/100 · Grade C · Updated 2026-06-04
Within St. James County, safety data across 14 ZIP codes suggests a fair but uneven system — violations are present and worth checking at the ZIP level.
How St. James County Compares
How St. James County Compares
St. James 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: St. James County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.5 (asthma 10.6%, diabetes 16.8%)
Estimated additional annual cost per homeowner: $4,881, driven primarily by sea_level
Infrastructure: 0.334% avg pipe failure probability, 17% of ZIPs at high risk
61.1% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across St. James County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 32 violations. Past 5 years: 52 total (52 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: $4,881
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
27,178 housing units in St. James 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 St. James County
Remediation costs are relatively manageable for most homeowners in St. James 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 St. James 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 St. James County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | GRAMERCY WATERWORKS | 2,860 | 4 |
| 2 | Lutcher Waterworks | 4,781 | 3 |
| 3 | St James Water District 1 | 7,200 | 2 |
| 4 | ST JAMES WATER DISTRICT 2 | 7,513 | 2 |
| 5 | ST CHARLES PARISH DEPT OF WATERWORKS | 52,879 | 0 |
All ZIP Codes in St. James County
14 ZIP codes tracked in St. James County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70723 | Convent | 94 | A | 2 (1 health) | — |
| 2 | 70071 | Lutcher | 80 | B | 3 (2 health) | $194K |
| 3 | 70052 | Gramercy | 69 | C | 4 (4 health) | $211K |
| 4 | 70069 | La Place | 60 | C | 0 | — |
| 5 | 70086 | Saint James | 60 | C | 0 | $106K |
| 6 | 70049 | Edgard | 52 | D | 0 | $173K |
| 7 | 70076 | Mount Airy | 52 | D | 0 | — |
| 8 | 70743 | Hester | 50 | D | 0 | $189K |
| 9 | 70792 | Uncle Sam | 50 | D | 0 | — |
| 10 | 70051 | Garyville | 47 | D | 0 | $141K |
| 11 | 70090 | Vacherie | 47 | D | 0 | $190K |
| 12 | 70763 | Paulina | 47 | D | 0 | $265K |
| 13 | 70084 | Reserve | 42 | D | 0 | $162K |
| 14 | 70068 | La Place | 37 | F | 0 | $191K |
Recommended Buyer Guides for St. James 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 Lead Paint Test Kits — 61.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for St. James County, Louisiana
Overview
St. James County in Louisiana covers 14 ZIP codes with an average Home Safety Score of C (56/100).
3 of 14 ZIP codes have recorded EPA violations. 7 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.