Groton, MA: High Radon Risk - Home Safety 67/100
3 ZIP codes · 2 water systems · Updated
ZipCheckup grade for Groton: C.
A mixed picture - some signals here are worth your attention.
In recent monitoring cycles, Groton tap water shows a mixed record for MA - several systems have documented violations alongside areas with clean compliance histories.
How Groton Compares
Data: EPA SDWIS
Groton Water: The Quick Version
- Average lead level: 0.0047 mg/L.
- Estimated remediation: $1,767 per household.
- CDC health risk index: 9.88.
Water Systems Serving Groton
Across Groton, MA, residential water comes from 2 primary utilities rather than a single consolidated provider. Each system operates independently - managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 2 water systems in the area, with these top providers accounting for the majority of residential connections.
- C
- C
Overview
We track home safety data for 3 ZIP codes in Groton, Massachusetts, covering 2 community water systems serving approximately 11,228 people. The EPA snapshots used for this build directly map water systems to 1 of 3 ZIP codes.
The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.
Home Safety Score
Average Home Safety Score for Groton: C (67/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Groton water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0047 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 3 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- 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 |
|---|---|---|---|
| 01450 | C | Groton Water Department | 5,456 |
All ZIP Codes in Groton
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Groton
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
Groton: Remediation Cost in Perspective
Equity impact data for Groton lands in the favorable tier - remediation claims a small slice of what properties here are worth.
Remediation costs in Groton are relatively low compared to home values. The $1,167–$2,367 estimated range is a small fraction of median property value. Home values are 20% above the Massachusetts average.
Protecting Children from Lead in Groton
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.
Lead risk in Groton appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Groton
Historical NFIP data for Groton contains 2 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $12,395. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The <strong>$1,767</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
What You Can Do in Groton
- 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.
Deep Dive Reports
Detailed analysis for Groton, MA