Klamath County, Oregon
18 ZIP codes · Avg score 69/100 · Grade C · Updated 2026-06-03
Current EPA records place Klamath County in the middle tier for drinking water safety, with 18 ZIP codes showing a range of outcomes.
How Klamath County Compares
How Klamath County Compares
Klamath County scores 9 points below the Oregon state average (78/100) and 1 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Klamath County, Oregon
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.9 (asthma 12.5%, diabetes 14.1%)
Estimated additional annual cost per homeowner: $928, driven primarily by energy_code_gap
Infrastructure: 0.364% avg pipe failure probability, 33% of ZIPs at high risk
64.8% of homes built before 1978 (lead paint era)
Violation History (2024–2025)
→ Stable trendEPA violation counts by year across Klamath County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 5 violations. Past 5 years: 7 total (7 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: $928
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
31,820 housing units in Klamath 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 Klamath County
Remediation costs are relatively manageable for most homeowners in Klamath 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 Klamath 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 Klamath County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Klamath Falls Water Department | 40,475 | 33 |
| 2 | Oregon Water Utilities - Mountain Lakes | 770 | 33 |
| 3 | Falcon Heights | 559 | 33 |
| 4 | Round Lake Water Utilities | 250 | 33 |
| 5 | Skyline View District Improvement | 250 | 33 |
16 total water systems serve Klamath County.
All ZIP Codes in Klamath County
18 ZIP codes tracked in Klamath County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 97639 | Sprague River | 83 | B | 0 | — |
| 2 | 97733 | Crescent | 83 | B | 0 | $223K |
| 3 | 97624 | Chiloquin | 82 | B | 14 (1 health) | $242K |
| 4 | 97633 | Merrill | 81 | B | 5 | $211K |
| 5 | 97601 | Klamath Falls | 79 | B | 11 (1 health) | $267K |
| 6 | 97602 | Klamath Falls | 78 | B | 11 (1 health) | — |
| 7 | 97603 | Klamath Falls | 78 | B | 11 (1 health) | $251K |
| 8 | 97604 | Crater Lake | 78 | B | 2 | — |
| 9 | 97632 | Malin | 78 | B | 4 (1 health) | $294K |
| 10 | 97622 | Bly | 77 | B | 7 | — |
| 11 | 97627 | Keno | 69 | C | 14 | $329K |
| 12 | 97621 | Beatty | 53 | D | 0 | — |
| 13 | 97623 | Bonanza | 53 | D | 0 | $281K |
| 14 | 97625 | Dairy | 53 | D | 0 | $408K |
| 15 | 97626 | Fort Klamath | 53 | D | 0 | $210K |
| 16 | 97634 | Midland | 53 | D | 0 | $260K |
| 17 | 97731 | Chemult | 53 | D | 0 | $313K |
| 18 | 97737 | Gilchrist | 53 | D | 0 | $269K |
Recommended Buyer Guides for Klamath County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 64.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Klamath County, Oregon
Overview
Klamath County in Oregon covers 18 ZIP codes with an average Home Safety Score of C (69/100).
9 of 18 ZIP codes have recorded EPA violations. 5 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.