Slidell, LA: 5 Health Violations — 81/100 (2026)
5 ZIP codes · 12 water systems · Updated 2026-06-04
Looking at federal monitoring data for Slidell, LA: the city clears benchmarks set under the Safe Drinking Water Act with room to spare — recorded exceedances are rare, and the systems serving local households have not triggered any pattern of repeat deficiencies in recent cycles.
How Slidell Compares
Data: EPA SDWIS Last verified: 2026-06-04
Water Quality Map: Slidell, LA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Safety grade breakdown for Slidell's 5 ZIP codes.
Key Facts for Slidell Residents
- Your city's water systems recorded 20 violations in the past 5 years.
- Average lead level: 0.001 mg/L.
- Homes built before 1986: 42% — older plumbing may contain lead solder.
- Estimated remediation: $2,120 per household.
- CDC health risk index: 13.78 — above typical levels.
Slidell's Water Providers
Residential water in Slidell, LA is supplied by 3 separate utilities — not one centralized authority. Each of those providers operates under its own service territory boundary, maintains its own distribution infrastructure, and files compliance documentation with the EPA on its own timeline. Federal data counts 12 water systems in the area, with these providers collectively accounting for the dominant share of household connections.
Overview
We track water quality and home safety data for 5 ZIP codes in Slidell, Louisiana, covering 12 community water systems serving approximately 94,837 people.
5 of 5 ZIP codes (100%) have recorded EPA violations. 5 health-based violations documented.
Home Safety Score
Average Home Safety Score for Slidell: B (81/100)
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
Slidell water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0010 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)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 5 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 12 | 5 |
| Stage 1 DBP Rule | Treatment Technique | 6 | 5 |
| Consumer Confidence Report Rule | Reporting | 6 | 5 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 70458 | B | 4 | 1 | Slidell Water Supply |
| 70459 | B | 4 | 1 | Slidell Water Supply |
| 70460 | B | 4 | 1 | Slidell Water Supply |
| 70461 | B | 4 | 1 | Slidell Water Supply |
| 70469 | A | 4 | 1 | Slidell Water Supply |
All ZIP Codes in Slidell
- 70458 [B] — 4 violations ⚠
- 70459 [B] — 4 violations ⚠
- 70460 [B] — 4 violations ⚠
- 70461 [B] — 4 violations ⚠
- 70469 [A] — 4 violations ⚠
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.
Slidell 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 Slidell's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Slidell Infrastructure Age
With 42% 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
Development in Slidell unfolded across multiple decades, and the median build year of 1987 reflects a housing inventory where eras of construction are genuinely mixed — including portions that predate the federal prohibition on lead solder in plumbing.
Most homes in Slidell were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Slidell
Property equity in Slidell runs well ahead of estimated remediation costs — a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Slidell are relatively low compared to home values. The $1,410–$3,360 estimated range is a small fraction of median property value. Home values are 33% above the Louisiana average.
Slidell: 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.
Locally, 42% of Slidell homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Slidell: Flood History & Water Damage Risk
Measured against the full NFIP dataset, Slidell's flood record stands out: 25821 claims accumulated over decades and 80% of ZIP codes inside FEMA-designated boundaries add up to a high-exposure profile where water infrastructure has faced recurrent stress.
Slidell has a significant flood history with 25,821 FEMA flood insurance claims on record, averaging $50,080 per claim. With 80% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$2,120</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Slidell, LA