States › Oklahoma › Cimarron County

Cimarron County, OK Water Quality

Water quality data for 2 public water systems serving Cimarron County, Oklahoma — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 2 water systems · 2 cities
✅
Excellent — All Systems Performing Well

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

A

Cimarron County Earns a A

Cimarron County: 2 communities across 2 water systems. 100.0% have no open violations.

  • Median lead where detected: none detected
  • 0 communities with a lead detection, 2 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 100.0% of communities have no open violations
—
Median Lead Level
County-wide, 90th percentile
2
Water Systems
Active CWS & NTNCWS
100%
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
  • Keyes
    Not detected
    No federal limits exceeded on record
    B
  • Boise City
    Not detected
    2 significant inspection deficiencies
    B
⚠ Needs Attention
  • Boise City
    Not detected
    2 significant inspection deficiencies
    B
  • Keyes
    Not detected
    No federal limits exceeded on record
    B

All Cities in Cimarron County

Boise City Not detected B
Keyes Not detected B
Showing 2 cities
No active violations Active violations

About Cimarron County Drinking Water

Cimarron County is served by 2 water systems covering 2 communities. No community here has an open violation on record.

Lead was not detected in any community in Cimarron County that reported a result.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 1 of them.

Frequently Asked Questions

Is Cimarron County tap water safe to drink?▼
No community in Cimarron County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Cimarron County?▼
No community reported a lead detection.
How many water systems serve Cimarron County?▼
2 community water systems serve 2 communities here.
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