Tapcensus

Washington

Whitman County drinking water quality

34 active public water systems serve 67,579 people in Whitman County. 18 are compliant, 16 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.

Active systems 34 19 community systems
People served 68K by public water systems
Systems with violations 16 47% of active systems, past 3 years
Serious violators 0 0 systems carry a health flag

Community water systems

19 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Pullman Water Department City of
 31,315 3 0
Washington State University
 21,506 0 0
Colfax Water Department City of
 3,507 2 0
Palouse Water Dept City of
 1,298 0 0
Tekoa City of
 1,076 2 0
Rosalia Town of
 831 0 0
ST John Town of
 800 2 0
Garfield Water Department
 694 4 0
Colton Water Department
 632 1 1
Albion Water Dept
 600 1 0
Oakesdale Town of
 492 0 0
Endicott Water Dept
 488 1 0
Uniontown Water Works
 366 0 0
Lacrosse Town of
 297 2 0
Malden Water Dept
 215 0 0
Steptoe Water/sewer District
 210 2 0
Farmington Water Dept
 165 0 0
Lamont Water System
 136 0 0
Sunset Mobile Court
 51 0 0
Non-community systems (15: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Palouse Empire Fairgrounds
 733 1 0
Horn School Rest Area
 557 1 0
Evangelical Free Church
 404 0 0
Project Cougar
 283 3 1
Kamiak Butte County Park
 201 1 0
Klemgard County Park
 157 0 0
Wawawai County Park
 154 0 0
Wilma Port of
 108 0 0
Garrison Center
 60 0 0
Toyota of Pullman
 53 0 0
Onecho Bible Church
 49 0 0
Tula Young Hastings Farm Wsu
 40 2 0
Boyer Park & Marina
 37 1 0
Colfax Lds Church
 35 0 0
Schad Holdings
 29 0 0
Inactive systems (46, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.