Knoll Terrace Subdivision
EPA ID: OR4101560 · 221 people served · 1 ZIP code
Even as other utilities in the region logged violations, Knoll Terrace Subdivision kept a clean EPA record — five years, no issues, 221 people served.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Demographics
The Knoll Terrace Subdivision serves a community with a median household income of $46,971 and an estimated 2,462 residents across its service area. Approximately 60% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 59% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Knoll Terrace Subdivision'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 Douglas 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
Knoll Terrace Subdivision (EPA ID: OR4101560) is a community water system in Oregon that serves approximately 221 people from surface water sources.
This system serves ZIP code 97417 in Canyonville.
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
- 97417 — Canyonville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Knoll Terrace Subdivision (OR4101560) on EPA.gov.
Frequently Asked Questions
Is Knoll Terrace Subdivision water safe to drink?
Based on EPA records, Knoll Terrace Subdivision has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Knoll Terrace Subdivision serve?
Knoll Terrace Subdivision serves approximately 221 people across 1 ZIP code in Oregon.
Where does Knoll Terrace Subdivision 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.