St. Helena County, Louisiana
2 ZIP codes · Avg score 83/100 · Grade B · Updated 2026-06-04
Covering 2 ZIP codes, St. Helena County earns a high grade for tap water — most systems report zero health-based violations, and the overall compliance rate comfortably exceeds federal benchmarks.
How St. Helena County Compares
How St. Helena County Compares
St. Helena County scores 12 points above the Louisiana state average (71/100) and 15 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
Key Risk Factors
Health risk index: 17.6 (asthma 11.3%, diabetes 19.8%)
Estimated additional annual cost per homeowner: $5,370, driven primarily by sea_level
Infrastructure: 0.36% avg pipe failure probability
55.5% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across St. Helena County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 3 violations. Past 5 years: 7 total (7 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: $5,370
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
8,980 housing units in St. Helena 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. Helena County
Remediation costs are relatively manageable for most homeowners in St. Helena 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. Helena 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. Helena County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Town of Amite Water System | 4,300 | 7 |
| 2 | Westview Water Works | 1,134 | 7 |
| 3 | Independence Water System | 3,052 | 7 |
| 4 | Eastern Heights Water Works | 1,782 | 7 |
| 5 | ROSELAND WATER SYSTEM | 1,521 | 7 |
9 total water systems serve St. Helena County.
All ZIP Codes in St. Helena County
2 ZIP codes tracked in St. Helena County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 70441 | Greensburg | 89 | A | 3 (1 health) | $99K |
| 2 | 70422 | Amite | 77 | B | 7 (2 health) | $170K |
Recommended Buyer Guides for St. Helena County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 55.5% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Overview
St. Helena County in Louisiana covers 2 ZIP codes with an average Home Safety Score of B (83/100).
2 of 2 ZIP codes have recorded EPA violations. 3 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.