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Yavapai County, AZ Water Quality

Water quality data for 24 public water systems serving Yavapai County, Arizona — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 24 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

Yavapai County Earns a B

Yavapai County: 25 communities across 24 water systems. 84.0% have no open violations.

  • Median lead where detected: 5.05 ppb
  • 6 communities with a lead detection, 19 reporting none detected
  • 3 communities with PFAS above the federal limit
  • 6 with significant inspection deficiencies
  • 84.0% of communities have no open violations
5.05 ppb
Median Lead Level
County-wide, 90th percentile
24
Water Systems
Active CWS & NTNCWS
84%
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
  • Prescott Valley
    Not detected
    No federal limits exceeded on record
    A
  • Clarkdale
    Not detected
    No federal limits exceeded on record
    A
  • Paulden
    Not detected
    No federal limits exceeded on record
    B
  • Congress
    Not detected
    No federal limits exceeded on record
    B
  • Williamson
    Not detected
    No federal limits exceeded on record
    B
⚠ Needs Attention
County Lead Level — Median 5.05 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 5.05 ppb — 33.7% of the federal action level
Systems by Lead Level
Under 5 ppb
3
5 – 10 ppb
1
10 – 15 ppb
2
No Data
19

All Cities in Yavapai County

Prescott Not detected D
Prescott Valley Not detected A
Cottonwood Not detected B
Sedona 6.00 ppb D
Camp Verde Not detected B
Village of Oak Creek (Big Park) Not detected F
Clarkdale Not detected A
Verde Village 4.10 ppb D
Lake Montezuma Not detected A
Paulden Not detected B
Cordes Lakes 4.10 ppb D
Chino Valley Not detected D
Black Canyon City 12.00 ppb B
Mayer 3.50 ppb B
Congress Not detected B
Williamson Not detected B
Spring Valley Not detected B
Dewey-Humboldt Not detected B
Wilhoit Not detected B
Cornville 10.00 ppb B
Yarnell Not detected B
Jerome Not detected B
Seligman Not detected B
Peeples Valley Not detected B
Ash Fork Not detected B
Showing 25 cities
No active violations Active violations

About Yavapai County Drinking Water

Yavapai County is served by 24 water systems covering 25 communities. 84% have no open violations.

Of the communities reporting lead results, 6 recorded a detection, with a median of 5.05 ppb — 34% of the federal action level. 19 reported none detected, which means below the laboratory limit rather than an absence of lead.

3 of 25 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 6 of them.

Frequently Asked Questions

Is Yavapai County tap water safe to drink?▼
84% of communities have no open violation. 3 of 25 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Yavapai County?▼
Among communities with a detection the median is 5.05 ppb, 34% of the 15 ppb action level. 19 reported none detected and 0 reported no result.
How many water systems serve Yavapai County?▼
24 community water systems serve 25 communities here.
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