Mashantucket, CT: 1 Health Violation — 64/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Mashantucket, CT: middle-tier water safety by the latest federal monitoring.
How Mashantucket Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Mashantucket Residents
- Your city's water systems recorded 7 violations in the past 5 years.
- Average lead level: 0.0053 mg/L.
- Homes built before 1986: 33% — older plumbing may contain lead solder.
- Estimated remediation: $2,100 per household.
Mashantucket's Water Providers
Across Mashantucket, CT, residential water comes from 2 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 2 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 1 ZIP code in Mashantucket, Connecticut (population ~62), covering 2 community water systems serving approximately 3,844 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Mashantucket: C (64/100)
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
Mashantucket water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0053 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes 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 |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 8 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 4 | 1 |
| Consumer Confidence Report Rule | Reporting | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 06338 | C | 7 | 1 | Ledyard Wpca - Ledyard Center |
All ZIP Codes in Mashantucket
- 06338 [C] — 7 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
Updated daily.
What's in Mashantucket's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Mashantucket Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
A median build year of 1996 in Mashantucket is characteristic of a mixed-era city where plumbing risk depends heavily on the specific property. Homes built before 1986 may have lead-soldered copper joints; those from before 1970 face the added possibility of lead service lines. The percentages above capture how much of the residential stock falls into each risk era.
Most homes in Mashantucket were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Mashantucket: Lead Risk & Vulnerable Populations
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.
Older interior plumbing shapes the local picture: 33% of Mashantucket homes predate the federal solder ban, and aggregate sampling either approaches or crosses the action benchmark. That mix makes a single-home draw a standard pre-purchase or pre-occupancy step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Mashantucket
- 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 Surface Water Treatment Rule can reduce the most common contaminant found in Mashantucket's water.
- Check your home's plumbing. With 33% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Mashantucket, CT