Corvallis, OR: 4 Health Violations — 94/100 (2026)
4 ZIP codes · 6 water systems · Updated 2026-06-03
Water systems in Corvallis, OR serve households with few reported safety events.
How Corvallis Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Corvallis Water
- Your city's water systems recorded 24 violations in the past 5 years.
- Average lead level: 0.0014 mg/L.
- Estimated remediation: $900 per household.
- CDC health risk index: 11.42.
Who Supplies Your Water in Corvallis
Residential addresses in Corvallis, OR are served by 3 primary water providers out of 6 systems in federal records. Each system maintains separate infrastructure and files its own EPA compliance reports, so service conditions are not uniform across the city.
Overview
We track water quality and home safety data for 4 ZIP codes in Corvallis, Oregon, covering 6 community water systems serving approximately 71,794 people.
4 of 4 ZIP codes (100%) have recorded EPA violations. 4 health-based violations documented.
Home Safety Score
Average Home Safety Score for Corvallis: A (94/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Corvallis water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0014 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 4 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | 15 | 4 |
| Lead | Inorganic | 5 | 4 |
| Stage 2 DBP Rule | Treatment Technique | 5 | 4 |
| Consumer Confidence Report Rule | Reporting | 5 | 4 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 97330 | A | 6 | 1 | City of Corvallis, |
| 97331 | A | 6 | 1 | City of Corvallis, |
| 97333 | A | 6 | 1 | City of Corvallis, |
| 97339 | A | 6 | 1 | City of Corvallis, |
All ZIP Codes in Corvallis
- 97330 [A] — 6 violations ⚠
- 97331 [A] — 6 violations ⚠
- 97333 [A] — 6 violations ⚠
- 97339 [A] — 6 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Corvallis
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Top Contaminants in Corvallis Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Cost Context: What Remediation Means for Corvallis Homeowners
How much of a Corvallis home's value does documented remediation represent? A small fraction — the equity share here is in the low tier, and from a household financial perspective, most property owners are considering a commitment that fits comfortably within standard planning rather than a decision that rises to the level of a material budget event or significant equity consideration.
Remediation costs in Corvallis are relatively low compared to home values. The $550–$1,500 estimated range is a small fraction of median property value. Home values are 22% above the Oregon average.
Lead Exposure Risk for Children in Corvallis
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Corvallis appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Corvallis
Flood activity in Corvallis is neither negligible nor at the level of the highest-exposure areas in the NFIP dataset. The 59-claim record and 50% flood zone coverage suggest a community that has experienced recurrent events but has not faced the kind of sustained, severe exposure where water-supply contamination becomes a primary public health concern. It sits in a middle range where flood history merits inclusion in any complete local water quality picture.
Corvallis has a moderate flood history with 59 FEMA claims averaging $11,696 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$900</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Corvallis, OR