TapWaterMap

OR / Coos Bay

OR · Tap water records

Coos Bay tap water, in plain English

Here is what the EPA's own data shows about tap water in Coos Bay. According to EPA SDWIS data retrieved June 2026, Coos Bay is served by 4 active community water systems, together reported to serve about 34,622 people.

As of June 2026, EPA records show 1,680 violations across the community water system(s) serving Coos Bay, going back to the earliest EPA record. 20 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

Coos Bay North Bend Wtr Brd

34,500 served · surface water · PWSID OR4100205

Sumner Water Corporation

50 served · surface water · PWSID OR4100209

Country Club Estates Wd

45 served · surface water · PWSID OR4101501

Watsonville Water System

27 served · surface water · PWSID OR4105302

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.