EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records
PUBLIC WATER SYSTEM RECORDPWSID OR4100587

Oregon · Surface water

Ontario, City Of

EPA’s September 2026 export lists Ontario, City Of (PWSID OR4100587) as No current violation flagged, serving a reported 14,465 people from a surface water source, with 0 rules in current violation.

Source: EPA SDWIS system-search export · Snapshot 13 Sep 2026 · Federal compliance fields

CURRENT EXPORTNo current violation flaggedNo current violation is flagged in this EPA export. This is not a household water test.
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01 / CURRENT FLAGS

EPA compliance flags for Ontario, City Of

Ontario, City Of is listed as no current violation flagged in the current export; the five federal flag categories remain separate below.

  • NOT FLAGGED
    Health-based violationCurrent HEALTH_FLAG in the EPA export.
  • NOT FLAGGED
    Monitoring and reportingCurrent MR_FLAG in the EPA export.
  • NOT FLAGGED
    Public notificationCurrent PN_FLAG in the EPA export.
  • NOT FLAGGED
    Other violationCurrent OTHER_FLAG in the EPA export.
  • NOT FLAGGED
    Serious violatorCurrent serious-violator status in the EPA export.
Important limit

This page is not a household water test. A clear federal flag does not prove every home has safe water, and a flag is not a measurement at your faucet. Plumbing, service lines, local sampling, private wells, and newer events may not be reflected here.

02 / VIOLATION RECORD

Quarters with violations0rolling history field
Quarters with SNC0significant noncompliance
Rules in current violation0EPA export count
Rules in 3-year window0EPA export count

Current rule entries for Ontario, City Of

EPA supplied 0 current contaminant, rule, or violation-category entries for Ontario, City Of in the exported fields used here.

  • No current contaminant or rule names were supplied in these export fields.

Three-year entries for Ontario, City Of

EPA supplied 0 contaminant or rule entries for Ontario, City Of in the three-year history field.

  • No three-year contaminant or rule names were supplied in this export field.

03 / OVERSIGHT & COVERAGE

Visits and sanitary surveys for Ontario, City Of

The export lists 2 site visits in five years and 0 significant deficiencies for Ontario, City Of.

Site visits, past 5 years
2
Inspection visits
0
Other visits
2
Last sanitary survey
06/16/2022
Last recorded visit
06/16/2022
Significant deficiencies
0

Places served by Ontario, City Of

EPA associates Ontario, City Of with the listed cities, counties, ZIP codes, and Oregon service area identifiers.

State / territory
Oregon
Cities
Not supplied
Counties
Malheur
ZIP codes
Not supplied
Federal PWSID
OR4100587
Registry ID
110070100591

04 / HOW TO USE THIS RECORD

Current public records for Ontario, City Of

EPA’s facility report, the Oregon drinking-water program, and Ontario, City Of’s Consumer Confidence Report are the current public records beyond this September 2026 snapshot.

Confirm current conditions with the utility's latest Consumer Confidence Report, your state drinking-water program, and the EPA facility report. For household concerns, ask a qualified local laboratory about tap testing.

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