St. John the Baptist Parish, Louisiana
6 ZIP codes · Avg score 99/100 · Grade A
ZipCheckup grade for St. John the Baptist Parish: A.
Checked records flag no major concern; missing data is unknown.
St. John the Baptist Parish: upper grades, 6 ZIPs.
How St. John the Baptist Parish Compares
How St. John the Baptist Parish Compares
St. John the Baptist Parish scores 7 points above the Louisiana state average (92/100) and 26 points above the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData
ZIP Code Risk Map
Water Quality Map: St. John the Baptist Parish, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.3 (asthma 10.7%, diabetes 17.2%)
Modeled additional annual cost estimate per homeowner: $5,308, largest modeled factor: Sea Level
72.6% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across St. John the Baptist Parish water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 4 violations. Since 2021: 5 total (5 health-based).
Source: EPA SDWIS historical violations. Data for the most recent year may be incomplete; check the source update date.
Parish Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $5,308
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
17,944 housing units in St. John the Baptist Parish
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. John the Baptist Parish
Modeled remediation costs in St. John the Baptist Parish can be compared with the median property value; actual costs vary by property.
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. John the Baptist Parish residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems mapped to St. John the Baptist Parish ZIP codes
5 community water systems mapped to St. John the Baptist Parish ZIP codes; EPA may list more systems serving the parish.
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- A
- A
- A
- A
Systems with the most violations in St. John the Baptist Parish
3 water systems with violations in EPA records.
- A
- A
- A
All ZIP Codes in St. John the Baptist Parish
6 ZIP codes tracked in St. John the Baptist Parish.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70068 | La Place | 100 | A | 1 | $191K |
| 2 | 70084 | Reserve | 99 | A | 2 | $162K |
| 3 | 70049 | Edgard | 98 | A | 8 (5 health) | $173K |
| 4 | 70051 | Garyville | — | — | 1 | $141K |
| 5 | 70069 | La Place | — | — | — | |
| 6 | 70076 | Mount Airy | — | — | 1 | — |
Recommended Buyer Guides for St. John the Baptist Parish
Each guide below is listed with the reason it appears.
- Best Lead Paint Test Kits — 72.6% 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. John the Baptist Parish, Louisiana
Overview
St. John the Baptist Parish in Louisiana covers 6 tracked ZIP records with an average Home Safety Score of A (99/100) across 3 scored records.
5 of 5 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 5 health-based violations appear in the available health breakdown.
← Back to Louisiana Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.