Oregon
Water quality data from the EPA Safe Drinking Water Information System
Water Systems
6,071
Active public water systems
Population Served
4.02M
Residents with piped water
Lead Violations
51
Systems exceeding 15 ppb
Copper Violations
240
Lead & Copper Rule
Average Lead Level
EPA Action Level: 15 ppb
MCLG (health goal): 0 ppb
Average across 1666 systems with reported lead data.
Violations Detected
291 water systems in Oregon have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.
Water Systems: Highest Lead Levels
| System Name | City | Population | Lead Level | Status | Sample Date |
|---|---|---|---|---|---|
| PORTLAND | 39,000 | 15.00 ppb | OK | 2005-06-30 | |
| SANDY | 12,991 | 13.00 ppb | OK | 2022-12-31 | |
| COTTAGE GROVE | 10,879 | 8.00 ppb | OK | 2024-12-31 | |
| WILSONVILLE | 25,915 | 7.60 ppb | OK | 2024-12-31 | |
| WOODBURN | 29,455 | 7.50 ppb | OK | 2025-12-31 | |
| COOS BAY | 34,500 | 4.97 ppb | OK | 2023-12-31 | |
| TUALATIN | 28,106 | 4.93 ppb | OK | 2025-12-31 | |
| PORTLAND | 666,200 | 4.89 ppb | OK | 2025-12-31 | |
| PORTLAND | 11,000 | 4.89 ppb | OK | 2025-12-31 | |
| PORTLAND | 65,443 | 4.60 ppb | OK | 2025-12-31 | |
| BEAVERTON | 224,600 | 4.50 ppb | OK | 2025-12-31 | |
| EUGENE | 176,000 | 4.50 ppb | OK | 2024-12-31 | |
| SALEM | 13,900 | 4.50 ppb | OK | 2026-12-31 | |
| DALLAS | 17,911 | 4.30 ppb | OK | 2024-12-31 | |
| LEBANON | 18,945 | 3.69 ppb | OK | 2025-12-31 |
Showing top 15 of 1632 systems with lead data. Action level: 15 ppb.
Systems With Active Violations
These water systems have exceeded EPA limits and must take corrective action.
PORTLAND · Pop. 666,200
Lead: 4.89 ppb (2025-12-31)
BEAVERTON · Pop. 224,600
Lead: 4.50 ppb (2025-12-31)
GRESHAM · Pop. 73,932
Lead: 3.40 ppb (2025-06-30)
PORTLAND · Pop. 65,443
Lead: 4.60 ppb (2025-12-31)
NEWBERG · Pop. 25,138
Lead: 2.32 ppb (2024-12-31)
LEBANON · Pop. 18,945
Lead: 3.69 ppb (2025-12-31)
CANBY · Pop. 18,754
Lead: 2.10 ppb (2024-12-31)
ST HELENS · Pop. 13,410
Lead: 1.03 ppb (2025-12-31)
THE DALLES · Pop. 13,010
Lead: 0.80 ppb (2025-12-31)
MONMOUTH · Pop. 11,651
Lead: 0.00 ppb (2024-06-30)
INDEPENDENCE · Pop. 10,300
Lead: 3.00 ppb (2023-12-31)
ASTORIA · Pop. 10,181
Lead: 1.56 ppb (2024-12-31)
Water Source Types
Air Quality
GoodAvg AQI
36.1
PM2.5
5.1 µg/m³
Unhealthy Days
4
Primary Pollutant
Wildfire smoke (seasonal)
Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.
PFAS Contamination
Moderate DetectionPFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →
Systems Tested
178
PFAS Detected
58
Detection Rate
32.6%
Exceeding MCL (4 ppt)
10(5.6%)
Highest recorded level: 22 ppt (EPA MCL: 4 ppt). Portland metro area affected; some industrial sources in Willamette Valley