Seffner, FL: 12 Violations — 74/100 (2026)
2 ZIP codes · 8 water systems · Updated 2026-06-03
In current tracking cycles, Seffner records above-average water quality outcomes for FL; compliance history over recent years shows few departures from federal standards and no systemic failures across its water systems.
How Seffner Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Seffner Residents
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.0001 mg/L.
- Estimated remediation: $1,950 per household.
- CDC health risk index: 11.98.
Seffner's Water Providers
Multiple utilities divide Seffner, FL's water service — 3 leading providers among 8 on the federal register.
Overview
We track water quality and home safety data for 2 ZIP codes in Seffner, Florida (population ~27,172), covering 8 community water systems serving approximately 474,848 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Seffner: B (74/100)
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
Seffner water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0001 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 12 | 2 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 6 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 33583 | B | 6 | 0 | Graceland Estates |
| 33584 | C | 6 | 0 | Graceland Estates |
All ZIP Codes in Seffner
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.
Seffner 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 Seffner's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Seffner
Equity impact data for Seffner lands in the favorable tier — remediation claims a small slice of what properties here are worth.
Remediation costs in Seffner are relatively low compared to home values. The $1,100–$3,200 estimated range is a small fraction of median property value. Home values are 17% below the Florida average.
Seffner: 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.
Lead risk in Seffner appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Seffner: Flood History & Water Damage Risk
The NFIP claim record for Seffner — 107 filed incidents — reflects genuine, recurring flood exposure rather than an isolated event or two. When a community accumulates flood claims at this volume and carries 50% of its ZIP codes inside FEMA-designated zones, flood history starts to factor into water quality planning in ways it doesn't for lower-exposure areas. Flooding introduces specific contamination pathways — runoff overwhelming treatment facility intake, surface water infiltrating private wells, and pressure disruptions in distribution systems allowing backflow — all of which become more relevant as flood frequency increases.
Seffner has a moderate flood history with 107 FEMA claims averaging $75,642 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$1,950</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 Seffner, FL