Tolland County, Connecticut
20 ZIP codes · Avg score 67/100 · Grade C · Updated
ZipCheckup grade for Tolland County: C.
A mixed picture - some signals here are worth your attention.
Across Tolland County, EPA compliance data for 20 ZIP codes sits at a moderate level - not alarming, but not uniformly clean either.
How Tolland County Compares
How Tolland County Compares
Tolland County scores 4 points above the Connecticut state average (63/100) and 6 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: Tolland 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: $1,584, driven primarily by flood
64.8% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Tolland County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 11 violations. Past 5 years: 28 total (28 health-based).
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: $1,584
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
67,102 housing units in Tolland 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 Tolland County
Remediation costs are relatively manageable for most homeowners in Tolland 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 Tolland County
8 community water systems serving Tolland County.
- C
- C
- C
- C
- C
- C
Show all 8 water systems
- C
29 total water systems serve Tolland County.
Systems with the most violations in Tolland County
5 water systems with recorded EPA violations.
- D
- C
- B
- C
- C
All ZIP Codes in Tolland County
20 ZIP codes tracked in Tolland County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 06226 | Willimantic | 83 | B | 1 | $181K |
| 2 | 06238 | Coventry | 77 | B | 7 (4 health) | $318K |
| 3 | 06250 | Mansfield Center | 73 | B | 11 (2 health) | $287K |
| 4 | 06029 | Ellington | 66 | C | 1 | $352K |
| 5 | 06071 | Somers | 65 | C | 5 | $379K |
| 6 | 06066 | Vernon Rockville | 64 | C | 7 (1 health) | $255K |
| 7 | 06084 | Tolland | 63 | C | 7 (5 health) | $332K |
| 8 | 06269 | Storrs Mansfield | 59 | C | 10 (5 health) | — |
| 9 | 06268 | Storrs Mansfield | 50 | D | 55 (11 health) | $329K |
| 10 | 06043 | Bolton | — | — | $349K | |
| 11 | 06072 | Somersville | — | — | — | |
| 12 | 06076 | Stafford Springs | — | — | 1 | $247K |
| 13 | 06077 | Staffordville | — | — | — | |
| 14 | 06231 | Amston | — | — | 0 | $377K |
| 15 | 06232 | Andover | — | — | $375K | |
| 16 | 06237 | Columbia | — | — | $322K | |
| 17 | 06248 | Hebron | — | — | 0 | $360K |
| 18 | 06251 | Mansfield Depot | — | — | — | |
| 19 | 06265 | South Willington | — | — | — | |
| 20 | 06279 | Willington | — | — | $288K |
Recommended Buyer Guides for Tolland County
Strictly editorial - no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Water Filters for PFAS — PFAS detected in 1 ZIP code
- Best Lead Paint Test Kits — 64.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Tolland County, Connecticut
Overview
Tolland County in Connecticut covers 20 tracked ZIP records with an average Home Safety Score of C (67/100) across 9 scored records.
10 of 12 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 21 health-based violations 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.