Pasadena, MD: High Radon Risk — 44/100 (2026)
2 ZIP codes · 3 water systems · Updated 2026-06-03
Pasadena, MD: water systems collectively below average — violations documented.
How Pasadena Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Pasadena Residents
- Estimated remediation: $1,400 per household.
- CDC health risk index: 11.75.
Pasadena's Water Providers
Residential water in Pasadena, MD is supplied by 3 separate utilities — not one centralized authority. Each of those providers operates under its own service territory boundary, maintains its own distribution infrastructure, and files compliance documentation with the EPA on its own timeline. Federal data counts 3 water systems in the area, with these providers collectively accounting for the dominant share of household connections.
Overview
We track water quality and home safety data for 2 ZIP codes in Pasadena, Maryland (population ~61,589), covering 3 community water systems serving approximately 325,641 people region-wide.
No EPA violations recorded across any ZIP codes in Pasadena — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Pasadena: D (44/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Pasadena water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Pasadena
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 1 ZIP code
- Zone 2 (Moderate): 1 ZIP code
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 21122 | F | Glen Burnie-broadneck | 290,606 |
| 21123 | D | CITY OF ANNAPOLIS | 35,000 |
All ZIP Codes in Pasadena
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Pasadena Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Remediation Costs Compare in Pasadena
Property equity in Pasadena runs well ahead of estimated remediation costs — a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Pasadena are relatively low compared to home values. The $800–$2,050 estimated range is a small fraction of median property value. Home values are 4% below the Maryland average.
Pasadena: Flood History & Water Damage Risk
Pasadena's NFIP record reflects high flood exposure — 592 claims spanning a long history of significant events, with 50% of ZIP codes in FEMA-designated zones. High flood frequency increases the probability of water quality disruptions at each point in the supply chain: treatment facilities, transmission infrastructure, and private wells all face elevated stress risk when flooding is a recurring feature rather than a rare exception.
Pasadena has a significant flood history with 592 FEMA flood insurance claims on record, averaging $18,945 per claim. With 50% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,400</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Pasadena
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Pasadena, MD