Oregon tap water quality
947 community water systems serving 3.8 million people.
Data: U.S. EPA · How we read the data · How we check it
PFAS: EPA's 2023–2025 testing. Lead: results from the last five years. 12 more systems have no recent lead results in EPA's database.
Water systems with PFAS above the federal limit
Based on EPA's UCMR 5 results (2023–2025) compared to the April 2024 limits, the way EPA compares them. Systems have until 2029 to comply. Largest first.
- City of Bend77,704 people · Surface water · OregonPFOA above limit
- Sunrise Water Authority50,003 people · Purchased surface water · OregonPFOS above limitAlso: Lithium above screening level
- Klamath Falls Water Dept40,475 people · Groundwater · OregonPFOS above limitAlso: PFHxS detected
- City of Milwaukie20,946 people · Groundwater · OregonPFOS above limit
- City of Hermiston20,000 people · Groundwater · OregonPFOS above limitAlso: PFHxS detected · Lithium above screening level
- City of Milton-Freewater7,145 people · Groundwater · OregonPFOS above limitAlso: PFHxS detected
- Rainbow Water District6,300 people · Groundwater under influence of surface water · OregonPFOS above limitAlso: PFOA detected · 1 health-based violation since 2016
- City of Dundee2,960 people · Groundwater · OregonPFOS above limitAlso: 1 health-based violation since 2016
- Marcola Water District600 people · Groundwater · OregonPFOS above limitAlso: PFHxS detected
Oregon PFAS report: chart, rankings and data to download →
Largest water systems in Oregon
- Portland Water Bureau666,200 people · Surface water · OregonNo PFAS above limitsAlso: 1 health-based violation since 2016
- Tualatin Valley Water District224,600 people · Purchased surface water · OregonNo PFAS above limits
- Salem Public Works199,820 people · Surface water · OregonNo PFAS above limits
- Eugene Water & Electric Board176,000 people · Surface water · OregonNo PFAS above limits
- Medford Water Commission106,068 people · Surface water · OregonNo PFAS above limits
- City of Hillsboro92,632 people · Purchased surface water · OregonNo PFAS above limits
- City of Beaverton88,045 people · Purchased surface water · OregonNo PFAS above limits
- City of Bend77,704 people · Surface water · OregonPFOA above limit
- City of Gresham73,932 people · Purchased surface water · OregonNo PFAS above limits
- Rockwood Public Utility District65,443 people · Purchased surface water · OregonNo PFAS above limits
- City of Tigard62,500 people · Purchased surface water · OregonNo PFAS above limits
- Springfield Utility Board62,100 people · Surface water · OregonPFOA detected
- City of Corvallis61,468 people · Surface water · OregonNo PFAS above limits
- City of Albany57,997 people · Surface water · OregonNo PFAS above limits
- Sunrise Water Authority50,003 people · Purchased surface water · OregonPFOS above limitAlso: Lithium above screening level
Oregon cities and towns
- Albany
- Beaverton
- Bend
- Corvallis
- Eugene
- Forest Grove
- Grants Pass
- Gresham
- Happy Valley
- Hillsboro
- Keizer
- Lake Oswego
- Medford
- Newberg
- Oregon City
- Portland
- Redmond
- Salem
- Springfield
- Tigard
- Tualatin
- West Linn
- Wilsonville
- Woodburn
Most health-based violations since 2016
- Weiss Estates Water System36 people · Surface water · OregonHaloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
- London Water Company – Op63 people · Surface water · OregonColiform bacteria violations
- Skyview Acres Water Company200 people · Purchased surface water · OregonHaloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
- Warm Springs Water Treatment Plant3,800 people · Surface water · OregonLead near 2027 levelAlso: 38 health-based violations since 2016
- Galice Subdivision Water Company33 people · Surface water · OregonNot in EPA's PFAS sampleAlso: 34 health-based violations since 2016
- McKee Bridge Mobile Home Park Water System40 people · Groundwater · OregonArsenic violationsAlso: Coliform bacteria violation
- Manzanita Hills Subdivision30 people · Groundwater · OregonArsenic violations
- City of Monroe723 people · Surface water · OregonTotal trihalomethanes (TTHM) violationsAlso: Haloacetic acids (HAA5) violations
- Garden Valley Water Association84 people · Surface water · OregonNot in EPA's PFAS sampleAlso: 26 health-based violations since 2016
- Golf MHP60 people · Groundwater · OregonNitrate violationsAlso: Arsenic violations
- City of Vale1,837 people · Groundwater · OregonArsenic violations
- City of Adrian159 people · Groundwater · OregonArsenic violationsAlso: Coliform bacteria violations
- Swisshome Village Water System24 people · Groundwater · OregonHaloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations · Coliform bacteria violation
- Cascade Gorge Properties Water System33 people · Surface water · OregonArsenic violationsAlso: Coliform bacteria violation · Haloacetic acids (HAA5) violation
- River Village MHP40 people · Groundwater · OregonArsenic violationsAlso: Coliform bacteria violations · Lead near 2027 level
All Oregon utilities on this site
Every Oregon system serving 50,000+ people or with PFAS above a federal limit, A to Z. Download all 947 systems as CSV.
- City of Albany
- City of Beaverton
- City of Bend
- City of Corvallis
- City of Dundee
- City of Gresham
- City of Hermiston
- City of Hillsboro
- City of Milton-Freewater
- City of Milwaukie
- City of Tigard
- Eugene Water & Electric Board
- Klamath Falls Water Dept
- Marcola Water District
- Medford Water Commission
- Portland Water Bureau
- Rainbow Water District
- Rockwood Public Utility District
- Salem Public Works
- Springfield Utility Board
- Sunrise Water Authority
- Tualatin Valley Water District
Questions
Does Oregon tap water have PFAS?
EPA tested 123 community water systems in Oregon for 29 PFAS between 2023 and 2025. 12 had at least one regulated PFAS detected, and 9 had an entry-point average above a 2024 federal limit. Those 9 systems serve about 226,133 people (6% of people on community water in Oregon). Systems have until 2029 to meet the limits.
How many Oregon water systems have violations?
325 systems in Oregon had at least one health-based violation since 2016 (1,265 violations in total). 738 violations are currently listed as unaddressed.
Which Oregon water systems are over the lead action level?
16 systems had a lead 90th percentile above the 15 ppb action level in their most recent results from the last five years. Another 12 systems have no lead results in EPA's database from the last five years, including 2 whose last result was above the action level. Lead depends on each home's pipes, so a test of your own tap is the only way to know your level.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.