N.s. Mayport
EPA ID: FL2160734 · 20,500 people served · 52 ZIP codes
ZipCheckup's reading of EPA SDWIS for N.s. Mayport (FL2160734): 4 unresolved EPA violations on record. Where compliant utilities carry no open actions, N.s. Mayport shows 4 active EPA violations in the federal database for a service population of approximately 20,500.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for N.s. Mayport Source: EPA SDWIS service area boundaries.
Service area boundary - Grade A
Service Area Demographics
The N.s. Mayport serves a community with a median household income of $68,363 and an estimated 969,743 residents across its service area. Approximately 53% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 40% 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?
N.s. Mayport'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.
Superfund Proximity Note: This service area ranks in the 69th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How N.s. Mayport compares to EPA limits
What This Means For You
Uranium at 1 mg/L exceeds the EPA maximum of 0.03 mg/L. Kidney toxicity, increased cancer risk. Consider reverse osmosis filtration.
Total Trihalomethanes (TTHM) at 2 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Total Coliform at 3 presence exceeds the EPA maximum of presence.
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 58 detections recorded.
Uranium was detected in this water system. reverse osmosis filtration can reduce exposure.
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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
N.s. Mayport (EPA ID: FL2160734) is a community water system in Florida that serves approximately 20,500 people from groundwater sources.
This system provides water to 52 ZIP codes across 2 communities.
Average Home Safety Score: A (89/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Resolved |
| November 1, 2024 | Total Coliform | Monitoring | Resolved |
| November 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| February 1, 2024 | Total Coliform | Monitoring | Unresolved |
| January 1, 2023 | Consumer Confidence Report Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Coliform | Microbiological | 3 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
| Uranium | Radionuclides | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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: 3 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 49 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.
This system serves 52 ZIP codes:
32099 · 32201 · 32202 · 32203 · 32204 32205 · 32206 · 32207 · 32208 · 32209 32210 · 32211 · 32212 · 32214 · 32215 32216 · 32217 · 32218 · 32219 · 32220 32221 · 32222 · 32223 · 32224 · 32225 32226 · 32227 · 32228 · 32229 · 32230 32231 · 32232 · 32233 · 32234 · 32235 32236 · 32237 · 32238 · 32239 · 32241 32244 · 32245 · 32246 · 32247 · 32254 32255 · 32256 · 32257 · 32258 · 32260 32267 · 32277
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for N.s. Mayport (FL2160734) on EPA.gov.
Frequently Asked Questions
Is N.s. Mayport water safe to drink?
N.s. Mayport has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does N.s. Mayport serve?
N.s. Mayport serves approximately 20,500 people across 52 ZIP codes in Florida.
Where does N.s. Mayport get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
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:
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.
Frequently Asked Questions
How to cite this page
ZipCheckup. (2026). N.s. Mayport (FL): 9 EPA Violations - 89/100 (2026). https://zipcheckup.com/water-system/fl2160734/
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title = {{N.s. Mayport (FL): 9 EPA Violations - 89/100 (2026)}},
year = {2026},
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Data as of April 2026.
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
N.s. Mayport (EPA ID: FL2160734) - request the latest Consumer Confidence Report or ask about specific contaminants.