TapWaterMap

OR / Cottage Grove

OR · Tap water records

Cottage Grove tap water, in plain English

Here is what the EPA's own data shows about tap water in Cottage Grove. According to EPA SDWIS data retrieved June 2026, Cottage Grove is served by 8 active community water systems, together reported to serve about 11,519 people.

As of June 2026, EPA records show 1,297 violations across the community water system(s) serving Cottage Grove, going back to the earliest EPA record. 203 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.

What the EPA has on record, by system

Cottage Grove, City Of

10,879 served · surface water · PWSID OR4100236

Lamontai Improvement Wtr Dist

255 served · groundwater · PWSID OR4100238

Riverstone Mobile Home Park

168 served · groundwater · PWSID OR4100240

London Water Co-Op

63 served · surface water · PWSID OR4100239

Mckenzie Palisades Water Board

50 served · groundwater · PWSID OR4100923

Hilltop Improvement District

45 served · groundwater · PWSID OR4100237

Mint Acres Water Co-Op

35 served · groundwater · PWSID OR4100292

Swisshome Village

24 served · groundwater · PWSID OR4100854

What this means

A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.

This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.

Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.