States › Oklahoma › Adair County

Adair County, OK Water Quality

Water quality data for 9 public water systems serving Adair County, Oklahoma — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 9 water systems · 27 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

Adair County Earns a B

Adair County: 27 communities across 9 water systems. 100.0% have no open violations.

  • Median lead where detected: 4.10 ppb
  • 10 communities with a lead detection, 17 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 18 with significant inspection deficiencies
  • 100.0% of communities have no open violations
4.1 ppb
Median Lead Level
County-wide, 90th percentile
9
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
  • Watts
    Not detected
    No federal limits exceeded on record
    B
  • Westville
    Not detected
    1 health-based violation since 2015
    B
  • Fairfield
    Not detected
    1 health-based violation since 2015
    B
  • Peavine
    Not detected
    1 health-based violation since 2015
    B
  • Baron
    Not detected
    1 health-based violation since 2015
    B
⚠ Needs Attention
  • Christie
    1.60 ppb
    4 significant inspection deficiencies
    C
  • Proctor
    1.60 ppb
    4 significant inspection deficiencies
    C
  • Chance
    1.60 ppb
    4 significant inspection deficiencies
    C
  • Elm Grove
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Honey Hill
    Not detected
    Copper above the 1,300 ppb action level
    B
County Lead Level — Median 4.1 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 4.1 ppb — 27.3% of the federal action level
Systems by Lead Level
Under 5 ppb
10
No Data
17

All Cities in Adair County

Stilwell Not detected B
Cherry Tree 4.10 ppb B
Westville Not detected B
Fairfield Not detected B
Rocky Mountain Not detected B
Peavine Not detected B
Wauhillau Not detected B
Christie 1.60 ppb C
Lyons Switch 4.10 ppb B
Greasy 4.10 ppb B
Baron Not detected B
Titanic Not detected B
Old Green Not detected B
Watts Not detected B
Elm Grove Not detected B
Bell 4.10 ppb B
Proctor 1.60 ppb C
Honey Hill Not detected B
West Peavine Not detected B
Chance 1.60 ppb C
Piney Not detected B
Mulberry Not detected B
Cave Spring 4.10 ppb B
Bunch 4.10 ppb B
Marietta Not detected B
Chewey Not detected B
Zion 0.88 ppb B
Showing 27 cities
No active violations Active violations

About Adair County Drinking Water

Adair County is served by 9 water systems covering 27 communities. No community here has an open violation on record.

Of the communities reporting lead results, 10 recorded a detection, with a median of 4.10 ppb — 27% of the federal action level. 17 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 18 of them.

Frequently Asked Questions

Is Adair County tap water safe to drink?▼
No community in Adair County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Adair County?▼
Among communities with a detection the median is 4.10 ppb, 27% of the 15 ppb action level. 17 reported none detected and 0 reported no result.
How many water systems serve Adair County?▼
9 community water systems serve 27 communities here.
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