Poquonock, CT Water Safety: 73/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
In current tracking cycles, Poquonock records above-average water quality outcomes for CT; compliance history over recent years shows few departures from federal standards and no systemic failures across its water systems.
How Poquonock Compares
Data: EPA SDWIS Last verified: 2026-06-03
Poquonock's Water Providers
Consolidated water delivery characterizes Poquonock, CT: among 1 system in federal records, one utility holds the dominant service position — carrying the rate-setting authority, the infrastructure obligations, and the EPA reporting burden for most residential addresses.
Overview
We track water quality and home safety data for 1 ZIP code in Poquonock, Connecticut, covering 1 community water system serving approximately 390,887 people.
No EPA violations recorded across any ZIP codes in Poquonock — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Poquonock: B (73/100)
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
Poquonock water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Poquonock
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 06064 | B | METROPOLITAN DISTRICT COMMISSION | 390,887 |
All ZIP Codes in Poquonock
- 06064 [B]
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.
Poquonock: Flood History & Water Damage Risk
Poquonock's flood exposure sits in the moderate range: 2 NFIP claims 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.
Poquonock has a moderate flood history with 2 FEMA claims averaging $75 per payout. 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>$1,200</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.
Deep Dive Reports
Detailed analysis for Poquonock, CT