City of Astoria
EPA ID: OR4100055 · 10,181 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for City of Astoria (OR4100055): no EPA violations recorded in the last five years. Throughout five consecutive years of federal water monitoring, City of Astoria recorded zero violations - solid performance for a utility serving 10,181 people.
Data: EPA SDWIS
Service Area Map
Coverage area for City of Astoria Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The City of Astoria serves a community with a median household income of $75,080 and an estimated 17,738 residents across its service area. Approximately 76% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
City of Astoria's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Oregon
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
City of Astoria, (EPA ID: OR4100055) is a community water system in Oregon that serves approximately 10,181 people from surface water sources.
This system serves ZIP code 97103 in Astoria.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00156 mg/L | No | N/A |
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.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 97103 - Astoria
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Astoria (OR4100055) on EPA.gov.
Frequently Asked Questions
Is City of Astoria water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for City of Astoria in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does City of Astoria serve?
City of Astoria serves approximately 10,181 people across 1 ZIP code in Oregon.
Where does City of Astoria get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). City of Astoria, OR: Serves 10K People. https://zipcheckup.com/water-system/or4100055/
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