Riddle Farm
EPA ID: MD0230019 · 500 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Riddle Farm (MD0230019): no drinking-water violations recorded since 2021. Across the reporting cycles included in federal data, Riddle Farm has no EPA violation entries - the file covers a service population of approximately 500 residents and says nothing about individual household plumbing.
Data: EPA SDWIS
Service Area Map
Coverage area for Riddle Farm Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Riddle Farm have a median household income of $83,333 and about 35,384 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 48% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Riddle Farm'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
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 6 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
Riddle Farm (EPA ID: MD0230019) is a community water system in Maryland that serves approximately 500 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0014 mg/L | No | 2024-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Riddle Farm (MD0230019) on EPA.gov.
Frequently Asked Questions
Is Riddle Farm water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Riddle Farm in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Riddle Farm serve?
Riddle Farm serves approximately 500 people across 2 ZIP codes in Maryland.
Where does Riddle Farm get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Riddle Farm Water Quality Report, MD. https://zipcheckup.com/water-system/md0230019/
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title = {{Riddle Farm Water Quality Report, MD}},
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