North Plains Water Department
EPA ID: OR4100576 · 3,663 people served · 8 ZIP codes
For the full five-year period covered by EPA monitoring, North Plains Water Department has supplied tap water to 3,663 residents with no violations of any type on record.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for North Plains Water Department Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The North Plains Water Department serves a community with a median household income of $96,962 and an estimated 178,423 residents across its service area. Approximately 50% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
North Plains Water Department'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.
About 2% of homes in Washington County, Oregon rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
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
North Plains Water Department (EPA ID: OR4100576) is a community water system in Oregon that serves approximately 3,663 people from surface water sources.
This system provides water to 8 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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
- 97003 — Beaverton
- 97005 — Beaverton
- 97006 — Beaverton
- 97007 — Beaverton
- 97008 — Beaverton
- 97075 — Beaverton
- 97076 — Beaverton
- 97077 — Beaverton
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for North Plains Water Department (OR4100576) on EPA.gov.
Frequently Asked Questions
Is North Plains Water Department water safe to drink?
Based on EPA records, North Plains Water Department has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does North Plains Water Department serve?
North Plains Water Department serves approximately 3,663 people across 8 ZIP codes in Oregon.
Where does North Plains Water Department get its water?
The primary water source is surface water.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.