Windham County, Connecticut
34 ZIP codes · Avg score 66/100 · Grade C · Updated
ZipCheckup grade for Windham County: C.
A mixed picture - some signals here are worth your attention.
Windham County's water quality grade reflects a middle-ground assessment - its 34 ZIP codes range from fully compliant to violation-flagged.
How Windham County Compares
How Windham County Compares
Windham County scores 3 points above the Connecticut state average (63/100) and 7 points below the national average (73/100).
Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData Last verified:
ZIP Code Risk Map
Water Quality Map: Windham County, Connecticut
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Estimated additional annual cost per homeowner: $1,435, driven primarily by energy_code_gap
70.3% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↑ Worsening trendEPA violation counts by year across Windham County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 28 violations. Past 5 years: 40 total (40 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
Infrastructure Overview
Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINS infrastructure needs, EPA SDWIS violations, and EPA lead indicators.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,435
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
42,356 housing units in Windham County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Windham County
Remediation costs are relatively manageable for most homeowners in Windham County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Water systems serving Windham County
8 community water systems serving Windham County.
- C
- C
- C
- C
- C
Show all 8 water systems
10 total water systems serve Windham County.
Systems with the most violations in Windham County
3 water systems with recorded EPA violations.
- C
All ZIP Codes in Windham County
34 ZIP codes tracked in Windham County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 06234 | Brooklyn | 67 | C | 0 | $275K |
| 2 | 06239 | Danielson | 67 | C | 0 | $261K |
| 3 | 06241 | Dayville | 67 | C | 0 | $272K |
| 4 | 06263 | Rogers | 67 | C | 0 | — |
| 5 | 06277 | Thompson | 67 | C | 0 | $275K |
| 6 | 06260 | Putnam | 60 | C | 20 | $258K |
| 7 | 06230 | Abington | — | — | — | |
| 8 | 06233 | Ballouville | — | — | — | |
| 9 | 06235 | Chaplin | — | — | $244K | |
| 10 | 06242 | Eastford | — | — | $310K | |
| 11 | 06243 | East Killingly | — | — | — | |
| 12 | 06244 | East Woodstock | — | — | — | |
| 13 | 06245 | Fabyan | — | — | — | |
| 14 | 06246 | Grosvenor Dale | — | — | — | |
| 15 | 06247 | Hampton | — | — | $283K | |
| 16 | 06255 | North Grosvenordale | — | — | 0 | $298K |
| 17 | 06256 | North Windham | — | — | 1 | $182K |
| 18 | 06258 | Pomfret | — | — | — | |
| 19 | 06259 | Pomfret Center | — | — | 5 (1 health) | $390K |
| 20 | 06262 | Quinebaug | — | — | 0 | $213K |
| 21 | 06264 | Scotland | — | — | $292K | |
| 22 | 06266 | South Windham | — | — | 1 | $225K |
| 23 | 06267 | South Woodstock | — | — | — | |
| 24 | 06278 | Ashford | — | — | 0 | $316K |
| 25 | 06280 | Windham | — | — | 1 | $238K |
| 26 | 06281 | Woodstock | — | — | $396K | |
| 27 | 06282 | Woodstock Valley | — | — | $333K | |
| 28 | 06331 | Canterbury | — | — | $295K | |
| 29 | 06332 | Central Village | — | — | 0 | $232K |
| 30 | 06354 | Moosup | — | — | 0 | $290K |
| 31 | 06373 | Oneco | — | — | $239K | |
| 32 | 06374 | Plainfield | — | — | 0 | $235K |
| 33 | 06377 | Sterling | — | — | 0 | $257K |
| 34 | 06387 | Wauregan | — | — | $206K |
Recommended Buyer Guides for Windham County
Four sources - EPA, NSF, FEMA, CDC - drive the match.
- Best Water Filters for PFAS — PFAS detected in 1 ZIP code
- Best Lead Paint Test Kits — 70.3% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Windham County, Connecticut
Overview
Windham County in Connecticut covers 34 tracked ZIP records with an average Home Safety Score of C (66/100) across 6 scored records.
5 of 17 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
← Back to Connecticut Home Safety Profile
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- PFAS screening: EPA UCMR 5
- Radon zones: EPA Map of Radon Zones
- Air quality: EPA AirData annual AQI
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.