Water quality in St. John, Washington
St. John is in Whitman County. 34 active public water systems serve the county; 16 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Whitman County
18 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Malden Water Dept |
215 | 0 | 10.9 mi | |
| Endicott Water Dept |
488 | 1 | 12.2 mi | |
| Rosalia Town of |
831 | 0 | 14.5 mi | |
| Oakesdale Town of |
492 | 0 | 16.4 mi | |
| Lamont Water System |
136 | 0 | 16.7 mi | |
| Steptoe Water/sewer District |
210 | 2 | 17.2 mi | |
| Colfax Water Department City of |
3,507 | 2 | 17.5 mi | |
| Garfield Water Department |
694 | 4 | 21.9 mi | |
| Lacrosse Town of |
297 | 2 | 23.6 mi | |
| Farmington Water Dept |
165 | 0 | 25.5 mi | |
| Tekoa City of |
1,076 | 2 | 26.0 mi | |
| Albion Water Dept |
600 | 1 | 26.1 mi | |
| Palouse Water Dept City of |
1,298 | 0 | 27.3 mi | |
| Sunset Mobile Court |
51 | 0 | 30.2 mi | |
| Pullman Water Department City of |
31,315 | 3 | 32.0 mi | |
| Washington State University |
21,506 | 0 | 32.5 mi | |
| Colton Water Department |
632 | 1 | 42.2 mi | |
| Uniontown Water Works |
366 | 0 | 45.0 mi |
Non-community systems in Whitman County (15: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Horn School Rest Area |
557 | 1 | 0 | |
|
Palouse Empire Fairgrounds |
733 | 1 | 0 | |
|
Colfax Lds Church |
35 | 0 | 0 | |
|
Onecho Bible Church |
49 | 0 | 0 | |
|
Klemgard County Park |
157 | 0 | 0 | |
|
Kamiak Butte County Park |
201 | 1 | 0 | |
|
Boyer Park & Marina |
37 | 1 | 0 | |
|
Tula Young Hastings Farm Wsu |
40 | 2 | 0 | |
|
Wawawai County Park |
154 | 0 | 0 | |
|
Schad Holdings |
29 | 0 | 0 | |
|
Garrison Center |
60 | 0 | 0 | |
|
Wilma Port of |
108 | 0 | 0 | |
|
Evangelical Free Church |
404 | 0 | 0 | |
|
Project Cougar |
283 | 3 | 1 | |
|
Toyota of Pullman |
53 | 0 | 0 |
About this data
Water systems are matched to Whitman County, nearest to St. John first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.