Lexington Park
EPA ID: MD0180007 · 43,030 people served · 7 ZIP codes
ZipCheckup's reading of EPA SDWIS for Lexington Park (MD0180007): 4 EPA violations in the last five years. Dating back across the full five-year EPA tracking window, Lexington Park encountered 4 violations, each subsequently remedied and closed - today the utility meets all federal drinking water requirements for the 43,030 residents in its service area and holds no open enforcement actions.
Data: EPA SDWIS
Service Area Map
Coverage area for Lexington Park Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Lexington Park serves a community with a median household income of $116,140 and an estimated 76,529 residents across its service area.
💧 Where Does Your Water Come From?
Lexington 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 Lexington Park compares to EPA limits
What This Means For You
Lead at 2 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Haloacetic Acids (HAA5) at 1 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Lexington Park (EPA ID: MD0180007) is a community water system in Maryland that serves approximately 43,030 people from groundwater sources.
This system provides water to 7 ZIP codes across 7 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 4 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 |
|---|---|---|---|
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Resolved |
| January 1, 2024 | Lead | Non-health-based | Resolved |
| January 1, 2024 | Lead | Non-health-based | Resolved |
| June 1, 2023 | Haloacetic Acids (HAA5) | 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 | Inorganic | 2 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 1 | No |
| Stage 2 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.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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.
- 20619 - California
- 20634 - Great Mills
- 20636 - Hollywood
- 20650 - Leonardtown
- 20653 - Lexington Park
- 20667 - Park Hall
- 20670 - Patuxent River
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Lexington Park (MD0180007) on EPA.gov.
Frequently Asked Questions
Is Lexington Park water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Lexington Park; its 4 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Lexington Park serve?
Lexington Park serves approximately 43,030 people across 7 ZIP codes in Maryland.
Where does Lexington Park get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lexington Park (MD): 4 EPA Violations. https://zipcheckup.com/water-system/md0180007/
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url = {https://zipcheckup.com/water-system/md0180007/}
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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
Lexington Park (EPA ID: MD0180007) - request the latest Consumer Confidence Report or ask about specific contaminants.