COUNTY REPORT OR

Columbia County, Oregon

Name: Home Safety Data for Columbia County, Oregon
Creator: ZipCheckup
License: https://creativecommons.org/licenses/by/4.0/

7 ZIP codes · Avg score 75/100 · Grade B

ZipCheckup grade for Columbia County: B.

This ZIP has a few items worth a quick check.

Columbia County: upper grades, 7 ZIPs.

How Columbia County Compares

Columbia County75/100

Oregon avg85/100

National avg73/100

How Columbia County Compares

County Grade

75/100

Avg Safety Score

ZIP Codes

Water Systems

Columbia County scores 10 points below the Oregon state average (85/100) and 2 points above the national average (73/100).

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

County Grade

Avg Safety Score

ZIP Codes

Saint Helens

Best ZIP: 97051 (76/100)

Scappoose

Lowest ZIP: 97056 (74/100)

$369K

Median Home Value

$400

Avg Remediation (0.11% of home value)

ZIP Code Risk Map

Water Quality Map: Columbia County, Oregon

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 13.4 (asthma 12.2%, diabetes 12.1%)

Modeled additional annual cost estimate per homeowner: $1,777, largest modeled factor: Flood

52% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 12.2% (national: 8.9%)

Diabetes 12.1% (national: 10.5%)

Obesity 33.5% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

1974

Median Build Year

52%

Pre-1980 Housing

45/100

Infrastructure Stress Indicator

86%

ZIPs with High Infrastructure Stress

Low

Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $1,777

Flood $1,300/yr

Energy Code Gap $463/yr

Water / Lead $120/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

21,834 housing units in Columbia County

Pre-1940 17%

1940–1959 11%

1960–1979 24%

1980–1999 28%

2000+ 20%

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 Columbia County

$369K

Median Home Value

$400

Est. Remediation Cost

0.1%

of Home Value

Remediation as % of home value low burden

Modeled remediation costs in Columbia County can be compared with the median property value; actual costs vary by property.

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 Columbia County residents

Asthma 12.2% (US avg: 8.9%)

Diabetes 12.1% (US avg: 11%)

Obesity 33.5% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Columbia County ZIP codes

7 community water systems mapped to Columbia County ZIP codes; EPA may list more systems serving the county.

City of St Helens,
Serves ~13,410 people 6 violations

B
City of Scappoose,
Serves ~8,710 people 5 violations

B
Mcnulty Water Pud
Serves ~2,500 people 15 violations

B
City of Clatskanie,
Serves ~2,188 people 34 violations
Warren Water Association
Serves ~2,050 people 10 violations

B
City of Rainier
Serves ~1,932 people 62 violations

Show all 7 water systems

Quincy Water Association
Serves ~300 people

Systems with the most violations in Columbia County

5 water systems with violations in EPA records.

City of Rainier
Serves ~1,932 people 62 violations
City of Clatskanie,
Serves ~2,188 people 34 violations
Mcnulty Water Pud
Serves ~2,500 people 15 violations

B
Warren Water Association
Serves ~2,050 people 10 violations

B
City of St Helens,
Serves ~13,410 people 6 violations

B

All ZIP Codes in Columbia County

7 ZIP codes tracked in Columbia County.

#	ZIP Code	City	Safety Score	Grade	Violations	Home Value
1	97051	Saint Helens	76	B	31	$369K
2	97056	Scappoose	74	B	36 (1 health)	$438K
3	97016	Clatskanie	—	—	34	$297K
4	97018	Columbia City	—	—		$442K
5	97048	Rainier	—	—	62	$364K
6	97053	Warren	—	—	31	$532K
7	97064	Vernonia	—	—		$360K

Recommended Buyer Guides for Columbia County

When no specific signal shows up in the records, the list falls back to general water testing and filtration guides rather than staying empty.

Water Filters Certified for PFAS Reduction — PFAS detected in 1 ZIP code
Best Lead Paint Test Kits — 52% of homes built before 1980
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 Columbia County, Oregon

💧

Water Quality

EPA violations, contaminant trends, and enforcement actions across the county

🏠

Home Affordability

Remediation costs vs. home values, equity trap analysis by ZIP

$400 avg remediation

🌊

Flood Risk

NFIP claim history and recorded rated-zone context across the county, plus FEMA property-map guidance

Overview

Columbia County in Oregon covers 7 tracked ZIP records with an average Home Safety Score of B (75/100) across 2 scored records.

5 of 5 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 1 health-based violation appear in the available health breakdown.

← Back to Oregon Home Safety Profile

Data Sources

Water quality: EPA Safe Drinking Water Information System (SDWIS)
PFAS screening: EPA UCMR 5
Radon zones: EPA Map of Radon Zones
Air quality: EPA AirData annual AQI
Home values: U.S. Census Bureau ACS (median estimates by ZCTA)

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frequently Asked Questions

Is water safe in Columbia County?

Columbia County receives an average Home Safety grade of B from its scored ZIP records (7 ZIP codes tracked); this is a composite index, not a tap-water test.

How many water systems serve Columbia County?

We map 7 public water systems to 7 ZIP codes in our data for Columbia County. EPA may list more systems serving the county, so this is not a full count.

What is the biggest environmental risk in Columbia County?

In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Columbia County is flood. Across all modeled risk factors, the estimated average additional annual cost is $1,777 per homeowner; actual costs vary by home.

How old are homes in Columbia County?

The median home build year in Columbia County is 1974. 52% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.

How does Columbia County compare to Oregon?

Columbia County has an average Home Safety Score of 75/100 under model 4.0.0, which is below the Oregon state average of 85/100.

Explore More

Flood Risk Rankings 2026 Lead Risk Rankings 2026 Water Safety Rankings 2026 Home Safety Rankings 2026 Water Filter Matcher Find the right filter for your water Home Safety Score Full safety breakdown by ZIP

Oregon State Overview →