Mariellen Park
EPA ID: MD0080028 · 184 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Mariellen Park (MD0080028): 1 violation on record since 2021. Mariellen Park has 1 EPA violation on record, all marked resolved in the federal data; the utility serves 184 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Mariellen Park Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Mariellen Park have a median household income of $130,008 and about 21,601 residents live in those ZIP codes (Census; not the number of people this system supplies). 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 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 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Maryland
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 | Lead and Copper 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 |
|---|---|---|---|
| Lead and Copper Rule | Monitoring & Reporting | 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: 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 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 available EPA compliance records 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.