Sandy Spring, MD: High Radon Risk — 53/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Drinking water quality in Sandy Spring has lagged behind MD benchmarks — documented violations keep the safety grade low.
How Sandy Spring Compares
Data: EPA SDWIS Last verified: 2026-06-03
Sandy Spring Water: The Quick Version
- Homes built before 1986: 44% — older plumbing may contain lead solder.
- Estimated remediation: $3,500 per household.
- CDC health risk index: 10.24.
Water Systems Serving Sandy Spring
Federal records list 2 water systems tied to Sandy Spring, MD. Of those, 2 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
Overview
We track water quality and home safety data for 1 ZIP code in Sandy Spring, Maryland (population ~2,062), covering 2 community water systems serving approximately 1,901,248 people region-wide.
No EPA violations recorded across any ZIP codes in Sandy Spring — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Sandy Spring: D (53/100)
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
Sandy Spring water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Sandy Spring
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 20860 | D | WASHINGTON SUBURBAN SANITARY COMMISSION | 1,900,000 |
All ZIP Codes in Sandy Spring
- 20860 [D]
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.
CDC Health Data for Sandy Spring
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 Old Is Sandy Spring's Housing Stock?
With 44% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Lead solder was a standard plumbing material before 1986, when federal law prohibited its use in new residential construction. In Sandy Spring, the median build year of 1982 indicates that plumbing age is a material factor in local lead risk — with the pre-1986 share concentrated in specific neighborhoods and building types where older construction remains common.
Most homes in Sandy Spring were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Sandy Spring: Remediation Cost in Perspective
In Sandy Spring, property wealth outpaces what documented remediation typically demands — the equity burden lands well within the low tier.
Remediation costs in Sandy Spring are relatively low compared to home values. The $2,300–$4,800 estimated range is a small fraction of median property value. Home values are 56% above the Maryland average.
Protecting Children from Lead in Sandy Spring
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
In recent monitoring under the Lead and Copper Rule, citywide samples for Sandy Spring have approached or crossed the regulatory action level on multiple occasions. Combined with 44% of stock dating from the pre-rule era, the picture supports baseline single-tap reads as a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Sandy Spring
How does Sandy Spring's flood record connect to local water quality? The NFIP documents 3 claims — enough to signal recurring events — and 100% of ZIP codes carry FEMA flood zone status. That combination places flooding in the category of factors that can periodically affect water infrastructure, even if the area isn't among the highest-exposure communities in the NFIP dataset.
Sandy Spring has a moderate flood history with 3 FEMA claims. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$3,500</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 Sandy Spring
- 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. With 44% of homes built before 1986, lead solder is a real possibility.
- 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 Sandy Spring, MD