City of the Dalles

ZipCheckup's reading of EPA SDWIS for City of the Dalles (OR4100869): 2 unresolved EPA violations on record. The EPA enforcement database lists 2 active violations for City of the Dalles - a provider that delivers drinking water to approximately 13,010 people and has not yet formally resolved those findings.

Data: EPA SDWIS

System Overview

City of the Dalles, (EPA ID: OR4100869) is a community water system in Oregon that serves approximately 13,010 people from surface water sources.

This system provides water to 2 ZIP codes across 2 communities.

ZIP-Area Home Safety Context: B (77/100)

This is the average Home Safety Score for 1 of 2 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: 10 resolved, 3 archived, 0 addressed, and 2 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 OR or modeled from parcel and building-footprint data.

• 97040 - Mosier
• 97058 - The Dalles

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of the Dalles (OR4100869) on EPA.gov.

Frequently Asked Questions

Is City of the Dalles water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does City of the Dalles serve?

City of the Dalles serves approximately 13,010 people across 2 ZIP codes in Oregon.

Where does City of the Dalles get its water?

The primary water source is surface water.

@misc{zipcheckup-water-system-or4100869,
  author = {{ZipCheckup}},
  title  = {{City of the Dalles (OR): 15 EPA Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/or4100869/}
}