Public Water Partners

CORVALLIS, OR · Linn County

COLORADO LAKE COOP Water System

Consumer Confidence Report status

COLORADO LAKE COOP must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 1 item for COLORADO LAKE COOP that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

System facts

System ID (PWSID)
OR4100232
System type
Community Water System
Population served
80
Service connections
46
Ownership
privately owned
Water source
groundwater (wells)

COLORADO LAKE COOP is one of 1,168 community water systems in Oregon in the 500 or fewer people size category, serving 80 people from groundwater.

As of August 1, 2026, its federal record holds 17 entries between 1976 and 2026, of which 1 remains open; none are health-based.

Of the 17, 9 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Total Coliform Rules, the Lead and Copper Rule, and the Consumer Confidence Rule.

Violation history

  • Initial, Follow-up, or Routine Source Water M/R

    —

    Lead and Copper Rule

    January 1, 2026

    Unaddressed

  • Initial, Follow-up, or Routine Source Water M/R

    —

    Lead and Copper Rule

    July 1, 2024 – November 4, 2024

    Resolved

  • Initial, Follow-up, or Routine Source Water M/R

    —

    Lead and Copper Rule

    July 1, 2020 – November 10, 2020

    Resolved

  • Initial, Follow-up, or Routine Source Water M/R

    —

    Lead and Copper Rule

    January 1, 2020 – May 2, 2020

    Resolved

  • Maximum Contaminant Level Violation, Acute (TCR)

    Health-based

    Coliform (TCR)

    January 1, 2009 – January 31, 2009

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    December 1, 2008 – December 31, 2008

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    November 1, 2008 – November 30, 2008

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    December 1, 2007 – December 31, 2007

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    November 1, 2007 – November 30, 2007

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    October 19, 2003 – July 21, 2004

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2003 – July 21, 2004

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    May 1, 2002 – May 31, 2002

    Resolved

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    June 1, 1999 – June 30, 1999

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    May 1, 1999 – May 31, 1999

    Resolved

  • Monitoring, Repeat Minor (TCR)

    —

    Coliform (TCR)

    May 1, 1993 – May 31, 1993

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    June 1, 1976 – May 31, 1980

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    June 1, 1976 – May 31, 1980

    Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is COLORADO LAKE COOP required to publish a Consumer Confidence Report?

Yes. COLORADO LAKE COOP is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is COLORADO LAKE COOP’s next Consumer Confidence Report due?

COLORADO LAKE COOP’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does COLORADO LAKE COOP have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show 1 item for COLORADO LAKE COOP that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

COLORADO LAKE COOP

541-360-0123

CORVALLIS, OR 97333