Holly Hill Estates
EPA ID: DE0000939 · 831 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Holly Hill Estates (DE0000939): no drinking-water violations recorded since 2021. With no violations in its EPA file, Holly Hill Estates serves 831 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Holly Hill Estates Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Holly Hill Estates have a median household income of $78,803 and about 27,164 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
Holly Hill Estates's water is classified in EPA records as a groundwater source. 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 in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 5 detections recorded. 2 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
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 |
|---|---|---|
| Below the reporting limit | No | 2023-12-31 |
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 available EPA compliance records 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/
@misc{zipcheckup-water-system-de0000939,
author = {{ZipCheckup}},
title = {{Holly Hill Estates Water Quality Report, DE}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/de0000939/}
}