Old Greenwich, CT: 24 Violations - Home Safety 50/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Old Greenwich: D.
Several federal signals point to home-safety risks in this ZIP.
Monitoring data across Old Greenwich reveals a persistent pattern of below-average compliance in CT - multiple service areas carry documented health violations, and the data has shown little overall improvement over recent EPA reporting cycles.
How Old Greenwich Compares
Data: EPA SDWIS
What You Should Know About Old Greenwich Water
- Your city's water systems recorded 24 violations in the past 5 years.
- Homes built before 1986: 72% - older plumbing may contain lead solder.
- Estimated remediation: $3,600 per household.
Who Supplies Your Water in Old Greenwich
Old Greenwich, CT runs on one primary water provider among the 1 federally tracked system. A single utility is responsible for the overwhelming share of residential supply - including the infrastructure, compliance filings, and rate schedules that govern service for most households.
- D
Overview
We track home safety data for 1 ZIP code in Old Greenwich, Connecticut (population ~7,903), covering 1 community water system serving approximately 351,756 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Old Greenwich: D (50/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Old Greenwich water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Barium | Inorganic | 4 | 1 |
| Cadmium | Inorganic | 4 | 1 |
| Chromium | Inorganic | 4 | 1 |
| Fluoride | Inorganic | 4 | 1 |
| Selenium | Inorganic | 4 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 06870 | D | 24 | 0 | Aquarion-eastern Fairfield County |
All ZIP Codes in Old Greenwich
- 06870 [D] - 24 violations
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Top Contaminants in Old Greenwich Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Old Greenwich
With 72% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
The lead that enters tap water in older homes often comes not from the municipal supply but from the home's own plumbing - from solder used in copper joints before the 1986 federal ban, or from lead pipes installed before 1970. In Old Greenwich, where the median build year is 1965, these older materials are widespread. More than half the residential stock predates the 1986 solder ban, and a significant fraction predates 1970 as well. For residents in those homes, the city-wide water quality picture is a less relevant frame than the specific materials inside their own walls and under their own street.
Over half of homes in Old Greenwich were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Old Greenwich Homeowners
In Old Greenwich, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.
Remediation costs in Old Greenwich are relatively low compared to home values. The $2,400–$4,800 estimated range is a small fraction of median property value. Home values are 287% above the Connecticut average.
Lead Exposure Risk for Children in Old Greenwich
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Locally, 72% of Old Greenwich homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Old Greenwich
Historical NFIP data for Old Greenwich contains 703 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $33,907. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
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. The <strong>$3,600</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
What You Can Do in Old Greenwich
- 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. Filters rated for Barium can reduce the most common contaminant found in Old Greenwich's water.
- Check your home's plumbing. With 72% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Old Greenwich, CT