On Top of the World
EPA ID: FL6424619 · 22,383 people served · 15 ZIP codes
Water monitoring for On Top of the World: clean, five years, 22,383 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for On Top of the World Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The On Top of the World serves a community with a median household income of $60,959 and an estimated 266,656 residents across its service area.
Environmental Justice Note: 62% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
On Top of the World's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Marion County, Florida rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 96 detections recorded. 32 exceed federal EPA limits (4 ppt for PFOA/PFOS). 24 exceed state limits.
Comparable Water Systems
Similar-sized systems in Florida
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
On Top of the World (EPA ID: FL6424619) is a community water system in Florida that serves approximately 22,383 people from groundwater sources.
This system provides water to 15 ZIP codes across 2 communities.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 4 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 11 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
- 34432 — Dunnellon
- 34470 — Ocala
- 34471 — Ocala
- 34472 — Ocala
- 34473 — Ocala
- 34474 — Ocala
- 34475 — Ocala
- 34476 — Ocala
- 34477 — Ocala
- 34478 — Ocala
- 34479 — Ocala
- 34480 — Ocala
- 34481 — Ocala
- 34482 — Ocala
- 34483 — Ocala
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for On Top of the World (FL6424619) on EPA.gov.
Frequently Asked Questions
Is On Top of the World water safe to drink?
Based on EPA records, On Top of the World has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does On Top of the World serve?
On Top of the World serves approximately 22,383 people across 15 ZIP codes in Florida.
Where does On Top of the World get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: FDEP PWS Lead Service Line Inventories (LSLI) · Submitted 2024
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.