Marion County, Oregon
30 ZIP codes · Avg score 89/100 · Grade A · Updated 2026-06-03
Homeowners across Marion County's 30 ZIP codes live with water safety scores that generally beat state and national averages.
How Marion County Compares
How Marion County Compares
Marion County scores 11 points above the Oregon state average (78/100) and 21 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Marion County, Oregon
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.4 (asthma 12.2%, diabetes 12.4%)
Estimated additional annual cost per homeowner: $1,040, driven primarily by flood
Infrastructure: 0.362% avg pipe failure probability, 24% of ZIPs at high risk
56% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
→ Stable trendEPA violation counts by year across Marion County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 21 violations. Past 5 years: 24 total (24 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $1,040
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
130,302 housing units in Marion County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Marion County
Remediation costs are relatively manageable for most homeowners in Marion County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Marion County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Marion County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Salem Public Works | 199,820 | 108 |
| 2 | Suburban East Salem Water District | 13,900 | 96 |
| 3 | Labish Village Wtr Commission | 452 | 96 |
| 4 | Carolina Water System | 300 | 96 |
| 5 | Surfwood Villa Hoa | 200 | 96 |
39 total water systems serve Marion County.
All ZIP Codes in Marion County
30 ZIP codes tracked in Marion County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97020 | Donald | 99 | A | 0 | $337K |
| 2 | 97032 | Hubbard | 98 | A | 9 (1 health) | $444K |
| 3 | 97342 | Detroit | 98 | A | 16 (1 health) | $307K |
| 4 | 97360 | Mill City | 95 | A | 0 | $281K |
| 5 | 97385 | Sublimity | 95 | A | 3 | $482K |
| 6 | 97026 | Gervais | 94 | A | 2 | $355K |
| 7 | 97309 | Salem | 94 | A | 8 | — |
| 8 | 97310 | Salem | 94 | A | 8 | — |
| 9 | 97311 | Salem | 94 | A | 8 | — |
| 10 | 97312 | Salem | 94 | A | 8 | — |
| 11 | 97314 | Salem | 94 | A | 8 | — |
| 12 | 97350 | Idanha | 94 | A | 1 (1 health) | $215K |
| 13 | 97325 | Aumsville | 93 | A | 2 | $364K |
| 14 | 97383 | Stayton | 92 | A | 2 | $408K |
| 15 | 97375 | Scotts Mills | 91 | A | 6 (1 health) | $486K |
| 16 | 97305 | Salem | 90 | A | 8 | $339K |
| 17 | 97308 | Salem | 90 | A | 8 | — |
| 18 | 97317 | Salem | 90 | A | 8 | $383K |
| 19 | 97352 | Jefferson | 89 | A | 8 (1 health) | $404K |
| 20 | 97307 | Keizer | 88 | A | 8 | — |
| 21 | 97303 | Salem | 85 | A | 8 | $397K |
| 22 | 97306 | Salem | 85 | A | 8 | $439K |
| 23 | 97002 | Aurora | 82 | B | 11 | $443K |
| 24 | 97392 | Turner | 82 | B | 10 | $547K |
| 25 | 97071 | Woodburn | 81 | B | 16 | $317K |
| 26 | 97301 | Salem | 80 | B | 8 | $311K |
| 27 | 97302 | Salem | 80 | B | 8 | $415K |
| 28 | 97381 | Silverton | 79 | B | 9 (1 health) | $498K |
| 29 | 97362 | Mount Angel | 73 | B | 0 | $420K |
| 30 | 97373 | Saint Benedict | 66 | C | 0 | — |
Recommended Buyer Guides for Marion County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Lead Paint Test Kits — 56% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Marion County, Oregon
Overview
Marion County in Oregon covers 30 ZIP codes with an average Home Safety Score of A (89/100).
26 of 30 ZIP codes have recorded EPA violations. 6 health-based violations have been documented.
← Back to Oregon water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.