Yarmouth Water Department

ZipCheckup's reading of EPA SDWIS for Yarmouth Water Department (MA4351000): 1 unresolved EPA violation on record. Tallying the federal enforcement file for Yarmouth Water Department yields 1 open violation that has not been formally closed - each finding sits in the EPA database while the utility continues to deliver water to approximately 38,900 residents and works through the required corrective action process.

Data: EPA SDWIS

System Overview

Yarmouth Water Department (EPA ID: MA4351000) is a community water system in Massachusetts that serves approximately 38,900 people from groundwater sources.

This system provides water to 3 ZIP codes across 3 communities.

ZIP-Area Home Safety Context: B (76/100)

This is the average Home Safety Score for 3 of 3 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

Status breakdown for accepted records with record years 2021-2026: 0 resolved, 1 archived, 1 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MA or modeled from parcel and building-footprint data.

• 02664 - South Yarmouth
• 02673 - West Yarmouth
• 02675 - Yarmouth Port

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Yarmouth Water Department (MA4351000) on EPA.gov.

Frequently Asked Questions

Is Yarmouth Water Department water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does Yarmouth Water Department serve?

Yarmouth Water Department serves approximately 38,900 people across 3 ZIP codes in Massachusetts.

Where does Yarmouth Water Department get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-ma4351000,
  author = {{ZipCheckup}},
  title  = {{Yarmouth Water Department (MA): 2 EPA Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/ma4351000/}
}