Ascension Parish, Louisiana
11 ZIP codes · Avg score 92/100 · Grade A · Updated
ZipCheckup grade for Ascension Parish: A.
No federal data flags a major home-safety concern for this ZIP.
Across Ascension Parish's 11 ZIP codes, EPA compliance data shows above-average performance - violation rates are minimal, none of the parish's systems have triggered health-based MCL exceedances in recent cycles, and the parish's scores have stayed above the national baseline across every recent reporting period.
How Ascension Parish Compares
How Ascension Parish Compares
Ascension Parish scores 0 points above the Louisiana state average (92/100) and 19 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 Last verified:
ZIP Code Risk Map
Water Quality Map: Ascension Parish, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.1 (asthma 9.7%, diabetes 12.2%)
Estimated additional annual cost per homeowner: $4,935, driven primarily by sea_level
30% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Ascension Parish water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 7 violations. Past 5 years: 13 total (13 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.
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 DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $4,935
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
50,907 housing units in Ascension 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 Ascension Parish
Remediation costs are relatively manageable for most homeowners in Ascension Parish, 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 Ascension Parish residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Ascension Parish
8 community water systems serving Ascension Parish.
- B
- A
- B
- B
- A
- A
Show all 8 water systems
- A
- A
13 total water systems serve Ascension Parish.
Systems with the most violations in Ascension Parish
5 water systems with recorded EPA violations.
- B
- A
- B
- A
- B
All ZIP Codes in Ascension Parish
11 ZIP codes tracked in Ascension Parish.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70725 | Darrow | 100 | A | 1 | — |
| 2 | 70734 | Geismar | 98 | A | 4 (2 health) | $306K |
| 3 | 70774 | Saint Amant | 98 | A | 5 (1 health) | $244K |
| 4 | 70778 | Sorrento | 98 | A | 5 (1 health) | $248K |
| 5 | 70346 | Donaldsonville | 83 | B | 1 (1 health) | $187K |
| 6 | 70737 | Gonzales | 83 | B | 51 (17 health) | $253K |
| 7 | 70769 | Prairieville | 83 | B | 22 (8 health) | $295K |
| 8 | 70707 | Gonzales | — | — | — | |
| 9 | 70718 | Brittany | — | — | — | |
| 10 | 70728 | Duplessis | — | — | — | |
| 11 | 70738 | Burnside | — | — | — |
Recommended Buyer Guides for Ascension Parish
Editorial-only picks, screened against the EPA detections on file.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Ascension Parish, Louisiana
Overview
Ascension Parish in Louisiana covers 11 tracked ZIP records with an average Home Safety Score of A (92/100) across 7 scored records.
7 of 7 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 21 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.