Is WEST SLOPE WATER DISTRICT required to publish a Consumer Confidence Report?

Yes. WEST SLOPE WATER DISTRICT 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 WEST SLOPE WATER DISTRICT’s next Consumer Confidence Report due?

WEST SLOPE WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

PORTLAND, OR · Washington County

WEST SLOPE WATER DISTRICT Water System

Consumer Confidence Report status

WEST SLOPE WATER DISTRICT 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 no open violations for WEST SLOPE WATER DISTRICT.

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): OR4100660
System type: Community Water System
Population served: 11,000
Service connections: 3,234
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

WEST SLOPE WATER DISTRICT is one of 63 community water systems in Oregon in the 10,001 to 100,000 people size category, serving 11,000 people from surface water.

As of August 1, 2026, its federal record holds 15 entries between 1994 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 15, 12 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 Consumer Confidence Rule, and the Lead and Copper Rule.

Violation history

Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2023 – June 28, 2024
Resolved
Public Education
Health-based
Lead and Copper Rule
March 11, 2018 – March 21, 2018
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
March 1, 2018 – March 31, 2018
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
September 1, 2017 – September 30, 2017
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
August 1, 2017 – August 31, 2017
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2013 – September 30, 2013
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 2013 – August 31, 2013
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 2013 – April 30, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 2008 – April 30, 2008
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
November 1, 2006 – November 30, 2006
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 2006 – April 30, 2006
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 2001 – September 30, 2001
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
September 1, 1996 – September 30, 1996
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1994 – September 30, 1994
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2023 – June 28, 2024	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
March 11, 2018 – March 21, 2018	Public Education	Lead and Copper Rule	Health-based	Resolved
March 1, 2018 – March 31, 2018	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
September 1, 2017 – September 30, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
August 1, 2017 – August 31, 2017	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
September 1, 2013 – September 30, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
August 1, 2013 – August 31, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2013 – April 30, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – October 31, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2008 – April 30, 2008	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
November 1, 2006 – November 30, 2006	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 2006 – April 30, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2001 – September 30, 2001	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 1996 – September 30, 1996	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
September 1, 1994 – September 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

March 31, 2001State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
December 18, 1995State Public Notification receivedgeneral compliance action — not tied to a specific violation on record

Common questions

Is WEST SLOPE WATER DISTRICT required to publish a Consumer Confidence Report?: Yes. WEST SLOPE WATER DISTRICT 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 WEST SLOPE WATER DISTRICT’s next Consumer Confidence Report due?: WEST SLOPE WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WEST SLOPE WATER DISTRICT have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for WEST SLOPE WATER DISTRICT.
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

WEST SLOPE WATER DISTRICT

503-292-2777

PORTLAND, OR 97298