Sebastian, FL Water Safety: 60/100 (2026)
3 ZIP codes · 2 water systems · Updated 2026-06-03
For most households in Sebastian, FL tap water is adequate — the middle-tier grade reflects gaps in specific service areas.
How Sebastian Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Sebastian Water
- Homes built before 1986: 43% — older plumbing may contain lead solder.
- Estimated remediation: $1,200 per household.
- CDC health risk index: 13.87 — above typical levels.
Who Supplies Your Water in Sebastian
2 water systems are tracked federally in Sebastian, FL. The top 2 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.
Overview
We track water quality and home safety data for 3 ZIP codes in Sebastian, Florida (population ~38,878), covering 2 community water systems serving approximately 294,646 people region-wide.
No EPA violations recorded across any ZIP codes in Sebastian — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Sebastian: C (60/100)
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
Sebastian water systems draw from: Groundwater, Surface water.
Lead & Copper
- Lead data: not yet available for Sebastian
- 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): 3 ZIP codes
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 32958 | C | INDIAN RIVER COUNTY UTILITIES (2 WTPS) | 126,893 |
| 32976 | C | MELBOURNE, CITY OF | 167,753 |
| 32978 | C | INDIAN RIVER COUNTY UTILITIES (2 WTPS) | 126,893 |
All ZIP Codes in Sebastian
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.
Health Outcomes in Sebastian
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
Housing & Infrastructure in Sebastian
With 43% 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
Prohibited from residential plumbing since 1986, lead solder divides Sebastian's housing stock along a timeline that the median build year of 1991 straddles. A meaningful share of homes predates the ban — a configuration that places moderate aggregate pressure on plumbing-related lead risk, distributed unevenly across neighborhoods.
Most homes in Sebastian 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.
Cost Context: What Remediation Means for Sebastian Homeowners
Low proportionality — that's the Sebastian picture when remediation costs are placed against typical home equity.
Remediation costs in Sebastian are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 17% below the Florida average.
Lead Exposure Risk for Children in Sebastian
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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 43% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Sebastian.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Sebastian
NFIP records stretching across multiple decades show Sebastian accumulating 362 claims and carrying 67% of its ZIP codes inside FEMA flood zones — evidence of meaningful exposure that extends beyond isolated incidents. The mechanisms linking flooding to water quality haven't changed: treatment facilities can be overwhelmed, wells can be infiltrated, and distribution systems can experience backflow. For a community at this exposure level, those mechanisms shift from hypothetical to periodically relevant.
Sebastian has a moderate flood history with 362 FEMA claims averaging $14,692 per payout. 67% 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>$1,200</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.
What You Can Do in Sebastian
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 43% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Sebastian, FL