Summit/highlands
EPA ID: MD0040026 · 1,108 people served · 4 ZIP codes
Compared to the national average for mid-size utilities, Summit/highlands sits well above the baseline — five years of EPA monitoring show no violations, no MCL exceedances, and no enforcement actions for the full service territory of 1,108 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Summit/highlands Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Summit/highlands serves a community with a median household income of $127,107 and an estimated 38,396 residents across its service area. Approximately 44% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Summit/highlands'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 Calvert County, Maryland rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
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
Summit/highlands (EPA ID: MD0040026) is a community water system in Maryland that serves approximately 1,108 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
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
Coverage: 3 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 1 additional ZIP inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Summit/highlands (MD0040026) on EPA.gov.
Frequently Asked Questions
Is Summit/highlands water safe to drink?
Based on EPA records, Summit/highlands has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Summit/highlands serve?
Summit/highlands serves approximately 1,108 people across 4 ZIP codes in Maryland.
Where does Summit/highlands get its water?
The primary water source is groundwater.