States › Arizona › Coconino County

Coconino County, AZ Water Quality

Water quality data for 20 public water systems serving Coconino County, Arizona — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 20 water systems · 25 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Coconino County Earns a B

Coconino County: 25 communities across 20 water systems. 92.0% have no open violations.

  • Median lead where detected: 5.00 ppb
  • 4 communities with a lead detection, 21 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 4 with significant inspection deficiencies
  • 92.0% of communities have no open violations
5 ppb
Median Lead Level
County-wide, 90th percentile
20
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
  • Munds Park
    Not detected
    No federal limits exceeded on record
    A
  • Bellemont
    Not detected
    No federal limits exceeded on record
    B
  • Tusayan
    Not detected
    No federal limits exceeded on record
    B
  • Blue Ridge
    Not detected
    No federal limits exceeded on record
    B
  • Valle
    Not detected
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • LeChee
    Not detected
    Copper above the 1,300 ppb action level
    D
  • Page
    Not detected
    Copper above the 1,300 ppb action level
    D
  • Red Lake
    Not detected
    1 significant inspection deficiency
    C
  • Williams
    Not detected
    1 significant inspection deficiency
    C
  • Grand Canyon Village
    Not detected
    1 significant inspection deficiency
    C
County Lead Level — Median 5 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 5 ppb — 33.3% of the federal action level
Systems by Lead Level
Under 5 ppb
1
5 – 10 ppb
3
No Data
21

All Cities in Coconino County

Flagstaff 3.60 ppb A
Page Not detected D
Doney Park Not detected B
Williams Not detected C
Timberline-Fernwood Not detected B
Kachina Village Not detected A
Grand Canyon Village Not detected C
Mountain View Ranches Not detected B
Tuba City 5.00 ppb B
Fredonia Not detected B
Munds Park Not detected A
Mountainaire Not detected B
Bellemont Not detected B
Fort Valley Not detected B
Tusayan Not detected B
Blue Ridge Not detected B
Greenehaven Not detected B
Oak Creek Canyon Not detected B
Moenkopi 5.00 ppb B
Cameron Not detected C
Forest Lakes 5.90 ppb B
Valle Not detected B
Mormon Lake Not detected B
Red Lake Not detected C
LeChee Not detected D
Showing 25 cities
No active violations Active violations

About Coconino County Drinking Water

Coconino County is served by 20 water systems covering 25 communities. 92% have no open violations.

Of the communities reporting lead results, 4 recorded a detection, with a median of 5.00 ppb — 33% of the federal action level. 21 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 4 of them.

Frequently Asked Questions

Is Coconino County tap water safe to drink?▼
92% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Coconino County?▼
Among communities with a detection the median is 5.00 ppb, 33% of the 15 ppb action level. 21 reported none detected and 0 reported no result.
How many water systems serve Coconino County?▼
20 community water systems serve 25 communities here.
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