Tapcensus

Water quality in Annex, Oregon

Annex is in Malheur County. 24 active public water systems serve the county; 23 had an EPA violation in the past three years.

Most likely your provider

Ontario, City of OR4100587 · Community water system · Surface water
Serves 14,465 people Rules violated, past 3 years 0 Last sanitary survey Jun 16, 2022 Distance 14.5 mi

Other community water systems in Malheur County

7 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Vale, City of
1,837 3 20.3 mi
Fischers Place MHP
130 10 24.4 mi
Nyssa, City of
3,285 3 24.6 mi
Adrian, City of
159 9 34.3 mi
Jordan Valley, City of
175 3 86.9 mi
Golf MHP
60 6 —
River Village MHP
40 7 —
Non-community systems in Malheur County (16: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Annex Charter School
50 5 1
Winners Horseshoe Annex
25 2 0
Oasis on the Snake
50 3 0
Fry Foods
280 3 0
Country Campground
25 3 0
Willowcreek Store & Cafe
50 4 1
Willowcreek Elem SD #84
80 3 2
Bates Motel & Deli
50 2 1
US Silica
69 1 0
Harper High/elementary SD 66
170 4 2
Oprd McCormack CG
250 2 0
Oprd Indian Creek CG
100 1 0
Oasis Cafe & Motel RV
55 4 0
Huntington Travel Plaza
999 1 0
Odot Stanton Blvd Facility
30 3 0
Spur 95
25 2 0
About this data

Water systems are matched to Malheur County, nearest to Annex 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 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.