TapWaterMap

WA / Walla Walla

WA · Tap water records

Walla Walla tap water, in plain English

Here is what the EPA's own data shows about tap water in Walla Walla. According to EPA SDWIS data retrieved July 2026, Walla Walla is served by 15 active community water systems, together reported to serve about 48,915 people.

As of July 2026, EPA records show 1,315 violations across the community water system(s) serving Walla Walla, going back to the earliest EPA record. 108 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.

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What the EPA has on record, by system

Walla Walla Water Division

42,959 served · surface water · PWSID WA5392500

Consolidated Irrigation Dist 14

1,555 served · groundwater · PWSID WA5314650

Walla Walla University

1,273 served · groundwater · PWSID WA5392470

Valle Lindo Homes

787 served · groundwater · PWSID WA5392475

Green Tank Irr District 11

553 served · groundwater · PWSID WA5329550

Prescott Town Of

522 served · groundwater · PWSID WA5369250

Hydro Irrigation District No 9

260 served · groundwater · PWSID WA5335275

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Blalock Orchard Dist 10

250 served · groundwater · PWSID WA5307350

Dixie Water Association

240 served · groundwater · PWSID WA5319480

Blalock Orchards Dist 12

193 served · groundwater · PWSID WA5307400

Sydney Heights Water Assn

130 served · groundwater · PWSID WA5386647

Summers Circle Water Llc

82 served · groundwater · PWSID WA5307937

Kooskooskie Cabin Owners Inc.

45 served · groundwater · PWSID WA5334751

Prospect Heights Comm Water Assn

40 served · groundwater · PWSID WA5369700

Reser Creek Water System

26 served · groundwater · PWSID WA5304761

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

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 July 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.