Town of Rock Hall
EPA ID: MD0140006 · 1,750 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Town of Rock Hall (MD0140006): 1 violation recorded with unresolved status in the SDWIS data used. EPA record snapshot: Town of Rock Hall, 1 open violation, 1,750 people served.
Data: EPA SDWIS
Service Area Map
Coverage area for Town of Rock Hall Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Town of Rock Hall have a median household income of $87,778 and about 2,400 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Town of Rock Hall'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.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Maryland
System Overview
Town of Rock Hall (EPA ID: MD0140006) is a community water system in Maryland that serves approximately 1,750 people from groundwater sources.
This system serves ZIP code 21661 in Rock Hall.
Violation History
Status breakdown for accepted records with record years 2021-2026: 0 resolved, 0 archived, 0 addressed, and 1 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 1, 2025 | Consumer Confidence Rule | Non-health-based | Unaddressed (current) |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0035 mg/L | No | 2023-12-31 |
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
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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.
- 21661 - Rock Hall
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Town of Rock Hall (MD0140006) on EPA.gov.
Frequently Asked Questions
Is Town of Rock Hall water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Town of Rock Hall serve?
Town of Rock Hall serves approximately 1,750 people across 1 ZIP code in Maryland.
Where does Town of Rock Hall get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Town of Rock Hall (MD): 1 EPA Violation. https://zipcheckup.com/water-system/md0140006/
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Town of Rock Hall (EPA ID: MD0140006) - request the latest Consumer Confidence Report or ask about specific contaminants.