ZipCheckup grade for 02641: B.
This ZIP has a few items worth a quick check.
Your top priority: use a filter certified to reduce PFAS; check which ones. Check your ZIP → EPA PFAS info
East Dennis, MA (02641): PFAS Detected in Mapped Water Systems - 83/100
EPA data for Dennis Water District
EPA records for the water systems mapped to 02641 in East Dennis, MA contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water No drinking-water violations in EPA records 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 2 - county-level radon potential, not a home measurement.
- Flood 2 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
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With no critical conditions on file, the 1 high-priority alert represent the top tier for East Dennis (02641).
Score Breakdown
Overall Home Safety Score: 83/100
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 (8) HIGH
Your Water System
ZIP code 02641 in East Dennis, Massachusetts is mapped to the water system Dennis Water District (EPA ID: MA4075000). This system provides water to approximately 65,000 people from groundwater sources.
Other Water Quality Reports in Massachusetts
- 01001 (Agawam)
- 01002 (Amherst) - 1 violation recorded for mapped water systems
- 01003 (Amherst) - 1 violation recorded for mapped water systems
- 01004 (Amherst)
- 01005 (Barre) - 17 violations recorded for mapped water systems
- 01007 (Belchertown)
- 01008 (Blandford) - 2 violations recorded for mapped water systems
- 01009 (Bondsville)
- 01010 (Brimfield)
- 01011 (Chester)
- 01012 (Chesterfield)
- 01013 (Chicopee)
- 01014 (Chicopee)
- 01020 (Chicopee) - 1 violation recorded for mapped water systems
- 01021 (Chicopee)
- 01022 (Chicopee)
- 01026 (Cummington)
- 01027 (Easthampton)
- 01028 (East Longmeadow) - 1 violation recorded for mapped water systems
- 01029 (East Otis)
Nearby Water Quality Reports
- 02638 (Dennis) - 2 mi
- 02660 (South Dennis) - 2 mi
- 02675 (Yarmouth Port) - 4 mi - 2 violations recorded for mapped water systems
- 02631 (Brewster) - 5 mi
- 02664 (South Yarmouth) - 5 mi - 2 violations recorded for mapped water systems
- 02670 (West Dennis) - 6 mi
- 02639 (Dennis Port) - 6 mi
- 02671 (West Harwich) - 6 mi
- 02645 (Harwich) - 6 mi
- 02637 (Cummaquid) - 7 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Dennis Water District (MA4075000) 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.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 02641.
Detected compounds: PFHxA, PFPeA.
Highest measured level: 0.0056 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 (11) MODERATE
Home & Infrastructure (7) OK
Cost & Community (7) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in East Dennis
Based on local data for ZIP 02641, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in East Dennis has 2 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 02641 was built around 1986. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 02641 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 02641 (primary system: Dennis Water District), including 0 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 02641's water come from?
The recorded water source for Dennis Water District, a system mapped to ZIP code 02641, is Groundwater. This system serves approximately 65,000 people.
How does East Dennis water compare to the national average?
East Dennis's Home Safety Score ranks better than 67% of U.S. ZIP codes, and at or above 64% within Massachusetts.
How can I get my water tested in East Dennis?
If Dennis Water District 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 02641?
02641 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Barnstable 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 02641's water?
Yes, PFAS have been detected in samples from water systems mapped to 02641. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 02641?
FEMA records contain 2 flood insurance claims filed in ZIP code 02641; the recorded rated-zone value (the most frequent one if there are several claims) is V04, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). East Dennis, MA (02641): PFAS Detected in Mapped Water Systems - 83/100. https://zipcheckup.com/report/02641/
@misc{zipcheckup-report-02641,
author = {{ZipCheckup}},
title = {{East Dennis, MA (02641): PFAS Detected in Mapped Water Systems - 83/100}},
year = {2026},
url = {https://zipcheckup.com/report/02641/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 02641
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 02638 | Dennis, MA | 1.7 mi | N/A | 0 |
| 02660 | South Dennis, MA | 2.3 mi | B | 0 |
| 02675 | Yarmouth Port, MA | 4.2 mi | C | 2 |
| 02631 | Brewster, MA | 4.8 mi | B | 0 |
| 02664 | South Yarmouth, MA | 5.0 mi | B | 2 |
| 02670 | West Dennis, MA | 5.5 mi | B | 0 |
| 02639 | Dennis Port, MA | 5.6 mi | B | 0 |
| 02671 | West Harwich, MA | 5.6 mi | N/A | 0 |
| 02645 | Harwich, MA | 6.1 mi | B | 0 |
| 02637 | Cummaquid, MA | 6.6 mi | C | 0 |
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