Grosvenor Dale, CT Water Safety: 63/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-04
The systems supplying Grosvenor Dale vary in performance across CT benchmarks — most meet minimum federal standards, but documented violations in select areas are on record.
How Grosvenor Dale Compares
Data: EPA SDWIS Last verified: 2026-06-04
Water Systems Serving Grosvenor Dale
One utility dominates residential water service in Grosvenor Dale, CT — out of 1 system in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Grosvenor Dale, Connecticut, covering 1 community water system serving approximately 1,070 people.
No EPA violations recorded across any ZIP codes in Grosvenor Dale — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Grosvenor Dale: C (63/100)
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
Grosvenor Dale water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Grosvenor Dale
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate 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 |
|---|---|---|---|
| 06246 | C | CTWC - THOMPSON SYSTEM | 1,070 |
All ZIP Codes in Grosvenor Dale
- 06246 [C]
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.
Climate-Related Water Risk for Grosvenor Dale
Grosvenor Dale's flood exposure sits in the moderate range: 1 NFIP claim on record and 100% of ZIP codes within FEMA-designated flood zones. Residents with private wells or older infrastructure have reasonable grounds to factor flood timing into their water quality awareness.
Grosvenor Dale has a moderate flood history with 1 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>$2,200</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 Grosvenor Dale
- 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 Grosvenor Dale, CT