Calvert Beach - Decatur Street
EPA ID: MD0040024 · 350 people served · 4 ZIP codes
Throughout five consecutive years of federal water monitoring, Calvert Beach - Decatur Street recorded zero violations — solid performance for a utility serving 350 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Calvert Beach - Decatur Street Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Calvert Beach - Decatur Street serves a community with a median household income of $120,278 and an estimated 89,414 residents across its service area.
💧 Where Does Your Water Come From?
Calvert Beach - Decatur Street'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.
About 1% of homes in Charles County, Maryland rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
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
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 9 detections recorded.
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
Calvert Beach - Decatur Street (EPA ID: MD0040024) is a community water system in Maryland that serves approximately 350 people from groundwater sources.
This system provides water to 4 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Calvert Beach - Decatur Street (MD0040024) on EPA.gov.
Frequently Asked Questions
Is Calvert Beach - Decatur Street water safe to drink?
Based on EPA records, Calvert Beach - Decatur Street has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Calvert Beach - Decatur Street serve?
Calvert Beach - Decatur Street serves approximately 350 people across 4 ZIP codes in Maryland.
Where does Calvert Beach - Decatur Street get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
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: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
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.