State Hub
Oregon Water Quality
277
Utilities in database
3.7M
Residents served
2
With open violations
121
PFAS monitored
Quick Answer
Oregon public drinking water is served by 277 EPA-tracked water systems, providing service to approximately 3.7 million residents through public utilities. 2 of those systems currently have open health-based violations on record in the EPA federal database. 121 systems have official PFAS monitoring records from the EPA UCMR 5 program (2023–2025). About 32% of OR residents use private wells, which fall outside federal utility compliance monitoring.
2 Oregon water systems have open health-based violations recorded in EPA SDWIS. An open violation means a contaminant exceeded a federal limit and the violation has not been formally resolved in the federal database. Check individual utility pages for current status.
Open Health-Based Violations in Oregon
Records sourced from EPA SDWIS. A record may be under review or resolved at the utility level but not yet updated in federal records. Water Utility Report does not determine whether water is safe to drink.
Drinking Water in Oregon
Oregon has 277 community water systems serving approximately 3.7 million residents. Primary water sources include surface water. The most commonly reported contaminants include disinfection byproducts, lead. 32% of Oregon residents rely on private wells. OHA holds primary enforcement authority under the Safe Drinking Water Act.
Highest Risk Utilities
Oregon systems with open health-based violations in EPA records.
Safest Large Utilities
Oregon systems with no open health violations serving 10,000+ residents.
Utilities in Oregon
51–75 of 277City of The Dalles
OR4100869 · 13,010 served
City of Sandy
OR4100789 · 12,991 served
City of Gladstone
OR4100321 · 12,121 served
Deschutes Valley Water Dist
OR4100501 · 11,700 served
City of Monmouth
OR4100537 · 11,651 served
West Slope Water District
OR4100660 · 11,000 served
City of Prineville
OR4100682 · 11,000 served
City of Cottage Grove
OR4100236 · 10,879 served
City of Silverton
OR4100823 · 10,484 served
Baker City
OR4100073 · 10,349 served
City of Sweet Home
OR4100851 · 10,322 served
Independence Water System
OR4100399 · 10,300 served
City of Molalla
OR4100534 · 10,298 served
City of Astoria
OR4100055 · 10,181 served
City of Newport
OR4100566 · 10,160 served
City of Fairview
OR4100296 · 9,963 served
City of Florence
OR4100299 · 9,561 served
City of Eagle Point
OR4100267 · 9,554 served
Umpqua Basin Water Assoc
OR4100719 · 9,499 served
City of Warrenton
OR4100932 · 9,100 served
City of Scappoose
OR4100792 · 8,710 served
City of Hood River
OR4100385 · 8,577 served
City of Stayton
OR4100843 · 8,400 served
Winston-dillard Water District
OR4100957 · 8,300 served
City of Umatilla
OR4100914 · 8,256 served
Key Contaminant Concerns in Oregon
These contaminants appear most frequently in Oregon utility records or pose elevated risk in this region based on EPA data.
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing. Critically, a utility's water quality report can show zero detected lead at the treatment plant while your specific tap still delivers elevated lead — because the contamination happens inside the distribution system and your home's plumbing, not at the source.
EPA limit: 15 ppb (action level)
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
EPA limit: 80 µg/L (TTHMs) / 60 µg/L (HAA5)
Independent Water Testing
Find a certified lab in Oregon
Utility compliance records show what water systems report to the EPA. An independent test from a certified laboratory confirms what's actually in your tap water. Oregon labs can test for PFAS, lead, nitrates, bacteria, and dozens of other contaminants.
Explore Water Quality in Oregon
City of The Dalles
Violation history, PFAS records, and official source links
City of Sandy
Violation history, PFAS records, and official source links
City of Gladstone
Violation history, PFAS records, and official source links
PFAS monitoring records — Oregon
121 water systems in Oregon with EPA UCMR 5 records
Active drinking water violations
2 open health-based violations on record — view official EPA SDWIS data
Lead in Oregon drinking water
State-specific lead data, violation utilities, and testing guidance
PFAS in Oregon drinking water
State-specific PFAS data, MCL context, and treatment options
Certified water testing labs in Oregon
Labs certified for PFAS (EPA 533/537.1), lead, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and filtration guides with cost ranges
Data sources and methodology
How WaterUtilityReport.com sources and validates official EPA data
Common Questions About Oregon Drinking Water
Does Oregon drinking water have PFAS?
121 Oregon water systems have EPA UCMR 5 PFAS monitoring records (2023–2025)
Which Oregon water utilities have open violations?
2 systems have open health-based violations in EPA SDWIS — search for your utility
How do I test my water in Oregon?
State-certified labs for PFAS (EPA 533/537.1), lead, nitrate, and bacteria testing
What treatment removes PFAS from OR tap water?
Reverse osmosis removes PFAS, lead, arsenic, and nitrates — cost, maintenance, and NSF certification explained
What do Oregon PFAS records tell me about my water?
EPA limits, health context, and what UCMR 5 detection above MRL means for your water
How is Oregon water quality data sourced here?
EPA SDWIS violations, UCMR 5 PFAS records, and CCR data — sources, accuracy notes, and limitations
Oregon Water FAQs
Data sources: Utility compliance and violation data from EPA SDWIS (Safe Drinking Water Information System). PFAS monitoring records from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). Contaminant data from EPA and ATSDR public references. This page summarizes public records — it is not a compliance determination. Methodology →
Last updated: 2026-04-19