ZipCheckup grade for 06338: D.
Federal records show several conditions worth reviewing.
Your top priority: see the breakdown below and consider a certified water filter. Check your ZIP → NSF certified filters
Mashantucket, CT (06338): PFAS Detected in Mapped Water Systems - 47/100
EPA data for Ledyard Wpca - Ledyard Center
Health-based violation records by water system:
EPA records for the water systems mapped to 06338 in Mashantucket, CT contain 5 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 3 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 3 health-based violations and 2 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
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No critical alerts appear in the record for Mashantucket (06338); the high-priority level accounts for 1 elevated-risk finding.
Score Breakdown
Overall Home Safety Score: 47/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 06338 in Mashantucket, Connecticut is mapped to the water system Ledyard Wpca - Ledyard Center (EPA ID: CT0727091). This system provides water to approximately 3,294 people from surface water sources.
Other Water Quality Reports in Connecticut
- 06001 (Avon) - 2 violations recorded for mapped water systems
- 06002 (Bloomfield) - 44 violations recorded for mapped water systems
- 06006 (Windsor)
- 06010 (Bristol) - 7 violations recorded for mapped water systems
- 06011 (Bristol)
- 06013 (Burlington) - 2 violations recorded for mapped water systems
- 06016 (Broad Brook) - 2 violations recorded for mapped water systems
- 06018 (Canaan) - 3 violations recorded for mapped water systems
- 06019 (Canton)
- 06020 (Canton Center)
- 06021 (Colebrook)
- 06022 (Collinsville)
- 06023 (East Berlin) - 36 violations recorded for mapped water systems
- 06024 (East Canaan) - 3 violations recorded for mapped water systems
- 06025 (East Glastonbury)
- 06026 (East Granby) - 23 violations recorded for mapped water systems
- 06027 (East Hartland)
- 06028 (East Windsor Hill)
- 06029 (Ellington) - 1 violation recorded for mapped water systems
- 06030 (Farmington)
Nearby Water Quality Reports
- 06339 (Ledyard) - 3 mi - 9 violations recorded for mapped water systems
- 06365 (Preston) - 4 mi - 7 violations recorded for mapped water systems
- 06359 (North Stonington) - 5 mi - 1 violation recorded for mapped water systems
- 06372 (Old Mystic) - 6 mi
- 06335 (Gales Ferry) - 7 mi - 5 violations recorded for mapped water systems
- 06360 (Norwich) - 8 mi - 1 violation recorded for mapped water systems
- 06378 (Stonington) - 8 mi - 1 violation recorded for mapped water systems
- 06380 (Taftville) - 8 mi - 1 violation recorded for mapped water systems
- 06355 (Mystic) - 8 mi - 7 violations recorded for mapped water systems
- 06382 (Uncasville) - 8 mi - 14 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Ledyard Wpca - Ledyard Center (CT0727091) on EPA.gov.
5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
Compliance History
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 06338.
Detected compounds: PFPeA, PFHxA, PFOA, PFBA, PFHpA, PFBS.
Highest measured level: 0.0191 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (9) MODERATE
Home & Infrastructure (8) OK
Cost & Community (6) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Frequently Asked Questions
Is the tap water in 06338 safe to drink?
EPA SDWIS records 5 violations since 2021 across the water systems mapped to ZIP 06338 (primary system: Ledyard Wpca - Ledyard Center), including 3 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 06338's water come from?
The recorded water source for Ledyard Wpca - Ledyard Center, a system mapped to ZIP code 06338, is Surface water. This system serves approximately 3,294 people.
How does Mashantucket water compare to the national average?
Mashantucket's Home Safety Score ranks lower than 95% of U.S. ZIP codes, and lower than 89% of ZIP codes within Connecticut.
How can I get my water tested in Mashantucket?
If Ledyard Wpca - Ledyard Center supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
What is the radon risk for 06338?
06338 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in New London County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 06338's water?
Yes, PFAS have been detected in samples from water systems mapped to 06338. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Mashantucket, CT (06338): PFAS Detected in Mapped Water Systems - 47/100. https://zipcheckup.com/report/06338/
@misc{zipcheckup-report-06338,
author = {{ZipCheckup}},
title = {{Mashantucket, CT (06338): PFAS Detected in Mapped Water Systems - 47/100}},
year = {2026},
url = {https://zipcheckup.com/report/06338/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 06338
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 06339 | Ledyard, CT | 3.2 mi | N/A | 9 |
| 06365 | Preston, CT | 3.7 mi | D | 7 |
| 06359 | North Stonington, CT | 4.7 mi | N/A | 1 |
| 06372 | Old Mystic, CT | 6.1 mi | N/A | 0 |
| 06335 | Gales Ferry, CT | 6.6 mi | N/A | 5 |
| 06360 | Norwich, CT | 7.8 mi | D | 1 |
| 06378 | Stonington, CT | 7.9 mi | C | 1 |
| 06380 | Taftville, CT | 7.9 mi | D | 1 |
| 06355 | Mystic, CT | 8.0 mi | C | 7 |
| 06382 | Uncasville, CT | 8.1 mi | D | 14 |
Nearby ZIP Code Reports
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