Rock Hall, MD (21661): 2 Violations Recorded for Mapped Water Systems
EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: Town of Rock Hall)
EPA records for the water systems mapped to 21661 in Rock Hall, MD contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 2 violations (non-health) (since 2021).
- Lead The reported 90th-percentile lead result of 0.0035 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 220 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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Score Breakdown
Overall Home Safety Score: Score unavailable
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Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) MODERATE
Your Water System
ZIP code 21661 in Rock Hall, Maryland is mapped to the water system Town of Rock Hall (EPA ID: MD0140006). This system provides water to approximately 1,750 people from groundwater sources.
There are 2 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Town of Rock Hall | MD0140006 | 1,750 | Groundwater |
| Edesville | MD0140009 | 296 | Groundwater |
Other Water Quality Reports in Maryland
- 20588 (Dhs)
- 20601 (Waldorf) - 3 violations recorded for mapped water systems
- 20602 (Waldorf) - 3 violations recorded for mapped water systems
- 20603 (Waldorf) - 3 violations recorded for mapped water systems
- 20604 (Waldorf)
- 20606 (Abell)
- 20607 (Accokeek) - 3 violations recorded for mapped water systems
- 20608 (Aquasco)
- 20609 (Avenue)
- 20610 (Barstow)
- 20611 (Bel Alton) - 3 violations recorded for mapped water systems
- 20612 (Benedict)
- 20613 (Brandywine) - 2 violations recorded for mapped water systems
- 20615 (Broomes Island)
- 20616 (Bryans Road) - 1 violation recorded for mapped water systems
- 20617 (Bryantown)
- 20618 (Bushwood)
- 20619 (California) - 12 violations recorded for mapped water systems
- 20620 (Callaway) - 1 violation recorded for mapped water systems
- 20621 (Chaptico) - 4 violations recorded for mapped water systems
Nearby Water Quality Reports
- 21620 (Chestertown) - 10 mi - 2 violations recorded for mapped water systems
- 21656 (Price) - 10 mi
- 21690 (Chestertown) - 10 mi
- 21658 (Queenstown) - 10 mi - 9 violations recorded for mapped water systems
- 21617 (Centreville) - 11 mi - 7 violations recorded for mapped water systems
- 21056 (Gibson Island) - 12 mi - 2 violations recorded for mapped water systems
- 21619 (Chester) - 13 mi - 2 violations recorded for mapped water systems
- 21052 (Fort Howard) - 13 mi - 9 violations recorded for mapped water systems
- 21409 (Annapolis) - 13 mi - 2 violations recorded for mapped water systems
- 21623 (Church Hill) - 13 mi - 5 violations recorded for mapped water systems
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.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
Environmental Hazards (11) MODERATE
Home & Infrastructure (8) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Rock Hall
Based on local data for ZIP 21661, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Rock Hall has 220 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 21661 was built around 1977. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Rock Hall is 1977; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Homes built around 1977 may be on their second or third roof. A professional inspection can catch damage before leaks start.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 21661 safe to drink?
EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 21661 (primary system: Town of Rock Hall), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 21661's water come from?
The recorded water source for Town of Rock Hall, a system mapped to ZIP code 21661, is Groundwater. This system serves approximately 1,750 people.
How can I get my water tested in Rock Hall?
If Town of Rock Hall supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 21661 tap water?
The Lead and Copper Rule record selected for 21661 reports a 90th-percentile lead result of 0.0035 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 21661?
21661 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Kent County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
What does the NFIP claim history show for ZIP 21661?
FEMA records contain 220 flood insurance claims filed in ZIP code 21661; the recorded rated-zone value (the most frequent one if there are several claims) is A10, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Rock Hall, MD (21661): 2 Violations Recorded for Mapped Water Systems. https://zipcheckup.com/report/21661/
@misc{zipcheckup-report-21661,
author = {{ZipCheckup}},
title = {{Rock Hall, MD (21661): 2 Violations Recorded for Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/21661/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 21661
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 21620 | Chestertown, MD | 9.7 mi | A | 2 |
| 21656 | Price, MD | 10.1 mi | N/A | 0 |
| 21690 | Chestertown, MD | 10.1 mi | N/A | 0 |
| 21658 | Queenstown, MD | 10.3 mi | N/A | 9 |
| 21617 | Centreville, MD | 11.3 mi | N/A | 7 |
| 21056 | Gibson Island, MD | 11.6 mi | N/A | 2 |
| 21619 | Chester, MD | 12.5 mi | N/A | 2 |
| 21052 | Fort Howard, MD | 12.6 mi | C | 9 |
| 21409 | Annapolis, MD | 12.8 mi | N/A | 2 |
| 21623 | Church Hill, MD | 13.0 mi | N/A | 5 |
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