Iberville County, Louisiana
15 ZIP codes · Avg score 59/100 · Grade C · Updated 2026-06-04
While Iberville County avoids the worst tiers, a portion of its 15 ZIP codes have logged violations.
How Iberville County Compares
How Iberville County Compares
Iberville County scores 12 points below the Louisiana state average (71/100) and 9 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Iberville County, Louisiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.9 (asthma 10.4%, diabetes 15.1%)
Estimated additional annual cost per homeowner: $4,805, driven primarily by sea_level
Infrastructure: 0.294% avg pipe failure probability, 7% of ZIPs at high risk
40.5% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across Iberville County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 37 violations. Past 5 years: 61 total (61 health-based). Health-based violations are declining versus the prior 2-year window.
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: $4,805
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
26,413 housing units in Iberville 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 Iberville County
Remediation costs are relatively manageable for most homeowners in Iberville 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 Iberville 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 Iberville County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Intracoastal Water System East | 2,940 | 36 |
| 2 | Intracoastal Water System West | 6,465 | 36 |
| 3 | CITY OF PLAQUEMINE WATER SYSTEM | 14,043 | 26 |
| 4 | East Iberville Water System | 6,657 | 26 |
| 5 | North Iberville Water System | 1,524 | 26 |
17 total water systems serve Iberville County.
All ZIP Codes in Iberville County
15 ZIP codes tracked in Iberville County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70740 | Grosse Tete | 90 | A | 3 (2 health) | $126K |
| 2 | 70772 | Rosedale | 80 | B | 7 (6 health) | $116K |
| 3 | 70788 | White Castle | 78 | B | 7 (3 health) | $146K |
| 4 | 70765 | Plaquemine | 75 | B | 13 (11 health) | — |
| 5 | 70721 | Carville | 69 | C | 3 (1 health) | $216K |
| 6 | 70453 | Pine Grove | 60 | C | 0 | $95K |
| 7 | 70764 | Plaquemine | 60 | C | 13 (11 health) | $175K |
| 8 | 70780 | Sunshine | 52 | D | 0 | — |
| 9 | 70786 | Watson | 52 | D | 0 | — |
| 10 | 70710 | Addis | 47 | D | 0 | $242K |
| 11 | 70734 | Geismar | 47 | D | 0 | $306K |
| 12 | 70770 | Pride | 47 | D | 0 | $174K |
| 13 | 70776 | Saint Gabriel | 47 | D | 0 | $280K |
| 14 | 70733 | French Settlement | 42 | D | 0 | $220K |
| 15 | 70739 | Greenwell Springs | 37 | F | 0 | $296K |
Recommended Buyer Guides for Iberville County
Designed to find the guide that fits the county, not the other way around — the system reads EPA detections, FEMA hazard layers, and CDC lead-exposure markers, then outputs the categories that resolve those specific risks for households here, with NSF-certified products surfaced when the matching contaminant appears in the local monitoring data.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Iberville County, Louisiana
Overview
Iberville County in Louisiana covers 15 ZIP codes with an average Home Safety Score of C (59/100).
6 of 15 ZIP codes have recorded EPA violations. 34 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.