Tapcensus

Water quality for ZIP code 97033

Sherman County, Oregon, one of 5 ZIP codes in the county. 12 active public water systems serve the county; 9 had an EPA violation in the past three years.

Most likely your provider

Grass Valley Water System OR4100356 · Community water system · Ground water
Serves 184 people Rules violated, past 3 years 2 Last sanitary survey Sep 15, 2021 Distance 14.8 mi

Other community water systems in Sherman County

3 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Moro, City of
350 2 20.9 mi
Wasco, City of
460 3 27.5 mi
Rufus Public Works
270 4 34.7 mi
Non-community systems in Sherman County (8: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Blm Beavertail Rec North Well
75 1 1
Sherman County School
240 1 0
Oprd Cottonwood Canyon ST PK
30 0 0
Pge Biglow Canyon
30 1 0
Oprd Deschutes River Rec Area
200 0 0
Biggs Service District
1,600 2 0
Usace John Day Dam
120 0 0
Usace LE Page Park
150 1 0
About this data

Water systems are matched to Sherman County, the county this ZIP code lies in, nearest to the ZIP code's centre 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.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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 Oregon 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.