States › Oregon › Klamath County

Klamath County, OR Water Quality

Water quality data for 12 public water systems serving Klamath County, Oregon — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 12 water systems · 13 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Klamath County Earns a A

Klamath County: 13 communities across 12 water systems. 92.3% have no open violations.

  • Median lead where detected: 1.79 ppb
  • 7 communities with a lead detection, 6 reporting none detected
  • 2 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 92.3% of communities have no open violations
1.79 ppb
Median Lead Level
County-wide, 90th percentile
12
Water Systems
Active CWS & NTNCWS
92%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Merrill
    Not detected
    No federal limits exceeded on record
    B
  • Chiloquin
    Not detected
    No federal limits exceeded on record
    B
  • Keno
    Not detected
    No federal limits exceeded on record
    B
  • Crescent
    2.20 ppb
    No federal limits exceeded on record
    B
  • Running Y Ranch
    Not detected
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Malin
    3.37 ppb
    1 violation currently open
    C
  • Altamont
    Not detected
    PFAS above the limit at 1 of 6 sampling points
    B
  • Klamath Falls
    Not detected
    PFAS above the limit at 1 of 6 sampling points
    B
  • Sprague River
    1.79 ppb
    3 health-based violations since 2015
    B
  • Falcon Heights
    4.31 ppb
    1 health-based violation since 2015
    B
County Lead Level — Median 1.79 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.79 ppb — 11.9% of the federal action level
Systems by Lead Level
Under 5 ppb
7
No Data
6

All Cities in Klamath County

Altamont Not detected B
Klamath Falls Not detected B
Merrill Not detected B
Chiloquin Not detected B
Malin 3.37 ppb C
Falcon Heights 4.31 ppb B
Keno Not detected B
Crescent 2.20 ppb B
Bly 1.79 ppb B
Gilchrist 1.20 ppb B
Running Y Ranch Not detected B
Sprague River 1.79 ppb B
Oregon Shores 0.28 ppb B
Showing 13 cities
No active violations Active violations

About Klamath County Drinking Water

Klamath County is served by 12 water systems covering 13 communities. 92% have no open violations.

Of the communities reporting lead results, 7 recorded a detection, with a median of 1.79 ppb — 12% of the federal action level. 6 reported none detected, which means below the laboratory limit rather than an absence of lead.

2 of 13 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Klamath County tap water safe to drink?▼
92% of communities have no open violation. 2 of 13 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Klamath County?▼
Among communities with a detection the median is 1.79 ppb, 12% of the 15 ppb action level. 6 reported none detected and 0 reported no result.
How many water systems serve Klamath County?▼
12 community water systems serve 13 communities here.
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