Middlesex County, Connecticut
23 ZIP codes · Avg score 56/100 · Grade C · Updated
ZipCheckup grade for Middlesex County: C.
A mixed picture - some signals here are worth your attention.
Monitoring figures for Middlesex County indicate average water quality overall - some ZIP codes among the 23 tracked have recorded health-based violations, while others operate cleanly, making individual ZIP-level data the most actionable reference point.
How Middlesex County Compares
How Middlesex County Compares
Middlesex County scores 7 points below the Connecticut state average (63/100) and 17 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: Middlesex 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: $3,865, driven primarily by sea_level
71.1% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Middlesex County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 18 violations. Past 5 years: 22 total (22 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: $3,865
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
76,254 housing units in Middlesex 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 Middlesex County
Remediation costs are relatively manageable for most homeowners in Middlesex 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 Middlesex County
8 community water systems serving Middlesex County.
- D
- D
- F
- F
- C
- C
Show all 8 water systems
- D
21 total water systems serve Middlesex County.
Systems with the most violations in Middlesex County
5 water systems with recorded EPA violations.
- F
- D
- C
All ZIP Codes in Middlesex County
23 ZIP codes tracked in Middlesex County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 06409 | Centerbrook | 67 | C | 0 | $367K |
| 2 | 06412 | Chester | 67 | C | 0 | $404K |
| 3 | 06417 | Deep River | 67 | C | 0 | $349K |
| 4 | 06426 | Essex | 67 | C | 0 | $720K |
| 5 | 06480 | Portland | 66 | C | 2 | $306K |
| 6 | 06442 | Ivoryton | 60 | C | 9 (1 health) | $451K |
| 7 | 06413 | Clinton | 50 | D | 1 | $357K |
| 8 | 06475 | Old Saybrook | 50 | D | 0 | $479K |
| 9 | 06498 | Westbrook | 50 | D | 0 | $424K |
| 10 | 06457 | Middletown | 46 | D | 12 | $280K |
| 11 | 06455 | Middlefield | 45 | D | 14 | $393K |
| 12 | 06416 | Cromwell | 37 | F | 31 (1 health) | $311K |
| 13 | 06414 | Cobalt | — | — | $329K | |
| 14 | 06419 | Killingworth | — | — | $389K | |
| 15 | 06422 | Durham | — | — | 2 | $405K |
| 16 | 06423 | East Haddam | — | — | $374K | |
| 17 | 06424 | East Hampton | — | — | 33 | $323K |
| 18 | 06438 | Haddam | — | — | $377K | |
| 19 | 06441 | Higganum | — | — | $380K | |
| 20 | 06456 | Middle Haddam | — | — | $429K | |
| 21 | 06459 | Middletown | — | — | 3 | — |
| 22 | 06469 | Moodus | — | — | $307K | |
| 23 | 06481 | Rockfall | — | — | 11 | $341K |
Recommended Buyer Guides for Middlesex County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations - federal data drives the order, not retailer arrangements.
- Best Water Filters for PFAS — PFAS detected in 2 ZIP codes
- Best Lead Paint Test Kits — 71.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
Deep Dive Reports
Detailed analysis for Middlesex County, Connecticut
Overview
Middlesex County in Connecticut covers 23 tracked ZIP records with an average Home Safety Score of C (56/100) across 12 scored records.
10 of 16 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 2 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.