Leonville, LA: 1 Health Violation — 98/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
How does Leonville tap water hold up under EPA scrutiny? Above average for LA — documented violations are uncommon and the safety grade reflects a clean overall record.
How Leonville Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Leonville Residents
- Your city's water systems recorded 1 violation in the past 5 years.
- Average lead level: 0.002 mg/L.
- Homes built before 1986: 93% — older plumbing may contain lead solder.
- Estimated remediation: $300 per household.
- CDC health risk index: 16.91 — above typical levels.
Leonville's Water Providers
While 1 water system appear in federal records for Leonville, LA, one provider supplies the majority of residential connections — making it the central point of infrastructure and compliance accountability for most households.
Overview
We track water quality and home safety data for 1 ZIP code in Leonville, Louisiana (population ~1,030), covering 1 community water system serving approximately 9,552 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Leonville: A (98/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Leonville water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0020 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Contaminant 0700 | Other | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 70551 | A | 1 | 1 | Town of Leonville Water System |
All ZIP Codes in Leonville
- 70551 [A] — 1 violation ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Leonville Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Leonville's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Leonville Infrastructure Age
With 93% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Plumbing risk in older housing is defined by two eras: the pre-1970 period when lead pipes were commonly used for service lines, and the 1970-to-1986 period when lead solder remained standard in copper plumbing until the federal ban. Leonville's median build year of 1963 lands in a range where both eras are heavily represented in the housing stock. That creates an elevated aggregate environment for plumbing-related lead exposure — one that city-level water quality averages don't capture, because the risk sits inside individual properties rather than in the distribution system.
Over half of homes in Leonville were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Leonville
Across Leonville, the equity share taken up by estimated remediation is small — a favorable ratio for most property owners.
Remediation costs in Leonville are relatively low compared to home values. The $150–$600 estimated range is a small fraction of median property value. Home values are 33% below the Louisiana average.
Leonville: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
93% — that captures the slice of Leonville housing dating from before the federal ban on solder containing lead. It pairs with aggregate utility readings that either approach or cross 0.015 mg/L, the benchmark set under the EPA Lead and Copper Rule. Together, the two figures shift one-home reads into a standard household-level confirmation, particularly for families with kids. A certified lead-removal filter is available through retailer-verified channels if a kit returns results that warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Leonville, LA