Is the Water Safe in Portland, OR?
The 1 public water system serving Portland, Oregon (population 666,200) average a Water Safety Score of 78/100, with a worst grade of C. These systems have 1 health-based violation and 0 contaminant exceedances on record.
Safety & Violations
| Metric | Value |
|---|---|
| Average Safety Score | 78/100 (C worst) |
| Public Water Systems | 1 |
| Population Served | 666,200 |
| Health Violations | 1 |
| Monitoring Violations | 0 |
| Contaminant Exceedances | 0 |
| Enforcement Actions | 4 |
Frequently Asked Questions
The 1 public water system serving Portland, Oregon (population 666,200) average a Water Safety Score of 78/100, with a worst grade of C. These systems have 1 health-based violation and 0 contaminant exceedances on record.
No specific contaminants are reported in the monitoring data for Portland, Oregon.
Portland, Oregon is served by 1 public water system, together supplying water to roughly 666,200 people. The worst safety grade among them is C.
No. In the reported monitoring data for Portland, no detected contaminant exceeded its EPA Maximum Contaminant Level (MCL).
The Water Safety Score (0-100, graded A-F) weighs health-based violations (40%), contaminant exceedances (30%), enforcement history (20%), and monitoring violations (10%), using EPA Safe Drinking Water Information System (SDWIS) data from the last 10 years.
Request your utility's annual Consumer Confidence Report (CCR), consider an independent test from a state-certified lab, and use an NSF-certified filter targeting any contaminant of concern. For lead specifically, run cold water 30 seconds before drinking.
The 1 public water system serving Portland, Oregon (population 666,200) average a Water Safety Score of 78/100, with a worst grade of C. These systems have 1 health-based violation and 0 contaminant exceedances on record.
The data source behind this answer is the EPA Safe Drinking Water Information System (SDWIS). Every figure on the page traces back to that source; the methodology page describes the inputs and the refresh cadence in full detail.
A practical caveat: the headline answer above reflects the most recent the EPA Safe Drinking Water Information System (SDWIS) vintage; underlying data is often revised for months after first publication, and the right reference for any specific decision is whichever vintage is current at the time of the decision. The as-of date is stamped on every page.
Source: EPA Ground Water and Drinking Water, 2026.