Mariellen Park
EPA ID: MD0080028 · 184 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Mariellen Park (MD0080028): 1 EPA violation in the last five years. Mariellen Park's record shows 1 remedied violation - all cleared, currently compliant, 184 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Mariellen Park Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Mariellen Park serves a community with a median household income of $130,008 and an estimated 21,601 residents across its service area. Approximately 41% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mariellen Park'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 60th 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 Mariellen Park compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in Maryland
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
Mariellen Park (EPA ID: MD0080028) is a community water system in Maryland that serves approximately 184 people from groundwater sources.
This system serves ZIP code 20646 in La Plata.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 1, 2023 | Stage 1 DBP Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
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 MD or modeled from parcel and building-footprint data.
- 20646 - La Plata
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mariellen Park (MD0080028) on EPA.gov.
Frequently Asked Questions
Is Mariellen Park water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Mariellen Park; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Mariellen Park serve?
Mariellen Park serves approximately 184 people across 1 ZIP code in Maryland.
Where does Mariellen Park get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mariellen Park (MD): 1 EPA Violation. https://zipcheckup.com/water-system/md0080028/
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title = {{Mariellen Park (MD): 1 EPA Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/md0080028/}
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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
Mariellen Park (EPA ID: MD0080028) - request the latest Consumer Confidence Report or ask about specific contaminants.