County · Oregon

Umatilla County, Oregon: drinking water records

Name: Drinking water records for Umatilla County, Oregon
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 35 community water systems across 13 ZIP codes in Umatilla County, then find water-testing resources and available recent monitoring-station readings.

In focus35Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 4 of the 35 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 35 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Hermiston, City of OR4100372	20,000	327	5	0	3 ppbbelow the action level
Pendleton, City of OR4100613	16,996	240	1	0	2.5 ppbbelow the action level
Umatilla, City of OR4100914	8,256	180	0	0	0 ppbbelow the action level
Milton-Freewater, City of OR4100522	7,145	180	2	0	2 ppbbelow the action level
Ctuir Pwd Mission 104111101	1,310	0	0	1	0 ppbbelow the action level
Athena, City of OR4100064	1,238	0	0	2	1.8 ppbbelow the action level
Ukiah, City of OR4100913	235	0	0	1	0 ppbbelow the action level
Sunridge Water INC OR4105798	200	0	0	1	0 ppbbelow the action level
Helix, City of OR4100368	190	0	0	2	0 ppbbelow the action level
Hat Rock Water Company OR4101309	150	0	0	2	0 ppbbelow the action level
Chart Subdivision OR4101415	125	0	0	1	0 ppbbelow the action level
Villadom Mobile Home Park OR4100525	115	0	0	3	1 ppbbelow the action level
North Hill Water Corporation OR4100374	100	0	0	2	0 ppbbelow the action level
Vincent Water Company OR4100521	90	0	0	1	1.7 ppbbelow the action level
Desire for Healing, INC OR4101330	33	0	0	2	1 ppbbelow the action level
Stanfield, City of OR4100842	2,115	0	0	0	2 ppbbelow the action level
Pilot Rock, City of OR4100626	1,326	0	0	0	0 ppbbelow the action level
Weston, City of OR4100949	714	0	0	0	0 ppbbelow the action level
Echo, City of OR4100270	632	0	0	0	0 ppbbelow the action level
Tierra Linda Estates OR4101044	450	0	0	0	0 ppbbelow the action level
Adams Water Dept, City of OR4100001	400	0	0	0	2 ppbbelow the action level
Vista Home Park OR4101099	300	0	0	0	5 ppbbelow the action level
Charles Tracts Water Company OR4100371	290	0	0	0	1.9 ppbbelow the action level
Green Acres MHP - Umatilla Co OR4100523	200	0	0	0	2 ppbbelow the action level
Country Squire Estates OR4101045	150	0	0	0	3 ppbbelow the action level
Rieth Water District OR4100617	150	0	0	0	1 ppbbelow the action level
Heritage Improvement District OR4100615	125	0	0	0	0 ppbbelow the action level
Shady Rest Mobile Court OR4101214	110	0	0	0	2 ppbbelow the action level
Stanfield Hutterian OR4101507	80	0	0	0	0 ppbbelow the action level
Green Meadows Wtr Corporation OR4100614	75	0	0	0	0 ppbbelow the action level
Mckay Acres Improvement Dist OR4100616	75	0	0	0	1 ppbbelow the action level
Power City Water Co-Op OR4100375	70	0	0	0	0 ppbbelow the action level
Halls Trailer Court OR4101123	60	0	0	0	4 ppbbelow the action level
Hat Rock Mobile Court OR4191232	60	0	0	0	2 ppbbelow the action level
Stewarts Addition OR4100619	50	0	0	0	1 ppbbelow the action level

USGS · Monitoring stations

The water, more recently.

Available station readings in Umatilla County, Oregon. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Umatilla County

13ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Adams
Athena
Echo
Helix
Hermiston
McKay
Meacham
Stanfield
Tutuilla
Ukiah
Umapine
Umatilla
Weston

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

97801Tutuilla
97810Adams
97813Athena
97826Echo
97835Helix
97838Hermiston
97859Meacham
97862Umapine
97868McKay
97875Stanfield
97880Ukiah
97882Umatilla
97886Weston

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 3 of the 4 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter3 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Umatilla County

All Oregon counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.