Public Water Partners

Kennewick, WA · Benton County

KENNEWICK CITY OF Water System

Consumer Confidence Report status

KENNEWICK CITY OF 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 KENNEWICK CITY OF.

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 Washington’s official records. Always confirm current status with Washington before making decisions based on this information.

System facts

System ID (PWSID)
WA5338100
System type
Community Water System
Population served
118,164
Service connections
39,118
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

KENNEWICK CITY OF is among the 14 largest community water systems in Washington, serving 118,164 people from surface water.

As of August 1, 2026, its federal record holds 4 entries between 1979 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

Of the 4, 3 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 Stage 2 Disinfectants and Disinfection Byproducts Rule, the Total Coliform Rules, and the Radionuclides and Revised Rad Rule.

Violation history

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    April 1, 2023 – June 30, 2023

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    April 1, 2023 – June 30, 2023

    Resolved

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    August 1, 1993 – August 31, 1993

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    October 1, 1979 – October 31, 1979

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is KENNEWICK CITY OF required to publish a Consumer Confidence Report?

Yes. KENNEWICK CITY OF 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 KENNEWICK CITY OF’s next Consumer Confidence Report due?

KENNEWICK CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does KENNEWICK CITY OF have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for KENNEWICK CITY OF.

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

KENNEWICK CITY OF

Phone not on record

Kennewick, WA 99336