Holly Hill Estates
EPA ID: DE0000939 · 831 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Holly Hill Estates (DE0000939): no EPA violations recorded in the last five years. Water monitoring history at Holly Hill Estates shows a clean slate - EPA tracking over the past five years turned up no violations, and 831 residents continue to receive fully compliant service.
Data: EPA SDWIS
Service Area Map
Coverage area for Holly Hill Estates Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Holly Hill Estates serves a community with a median household income of $78,803 and an estimated 27,164 residents across its service area.
💧 Where Does Your Water Come From?
Holly Hill Estates'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 80th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 5 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Delaware
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
Holly Hill Estates (EPA ID: DE0000939) is a community water system in Delaware that serves approximately 831 people from groundwater sources.
This system serves ZIP code 19977 in Smyrna.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by DE or modeled from parcel and building-footprint data.
- 19977 - Smyrna
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Holly Hill Estates (DE0000939) on EPA.gov.
Frequently Asked Questions
Is Holly Hill Estates water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Holly Hill Estates in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Holly Hill Estates serve?
Holly Hill Estates serves approximately 831 people across 1 ZIP code in Delaware.
Where does Holly Hill Estates get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Holly Hill Estates Water Quality Report, DE. https://zipcheckup.com/water-system/de0000939/
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title = {{Holly Hill Estates Water Quality Report, DE}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/de0000939/}
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