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Kay County, OK Water Quality

Water quality data for 8 public water systems serving Kay County, Oklahoma — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 8 water systems · 11 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

Kay County Earns a B

Kay County: 11 communities across 8 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.30 ppb
  • 6 communities with a lead detection, 5 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 7 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.3 ppb
Median Lead Level
County-wide, 90th percentile
8
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
  • Ponca City
    1.00 ppb
    1 significant inspection deficiency
    B
  • Kildare
    1.00 ppb
    1 significant inspection deficiency
    B
  • Blackwell
    Not detected
    28 health-based violations since 2015
    B
  • Newkirk
    Not detected
    25 health-based violations since 2015
    B
  • Braman
    Not detected
    15 health-based violations since 2015
    B
⚠ Needs Attention
  • Tonkawa
    6.40 ppb
    Copper above the 1,300 ppb action level
    C
  • Tonkawa Tribal Housing
    6.40 ppb
    Copper above the 1,300 ppb action level
    C
  • Nardin
    Not detected
    1 significant inspection deficiency
    C
  • Kaw City
    1.60 ppb
    Copper above the 1,300 ppb action level
    B
  • White Eagle
    1.00 ppb
    2 significant inspection deficiencies
    B
County Lead Level — Median 1.3 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.3 ppb — 8.7% of the federal action level
Systems by Lead Level
Under 5 ppb
4
5 – 10 ppb
2
No Data
5

All Cities in Kay County

Ponca City 1.00 ppb B
Blackwell Not detected B
Tonkawa 6.40 ppb C
Newkirk Not detected B
White Eagle 1.00 ppb B
Tonkawa Tribal Housing 6.40 ppb C
Braman Not detected B
Kildare 1.00 ppb B
Kaw City 1.60 ppb B
Nardin Not detected C
Peckham Not detected B
Showing 11 cities
No active violations Active violations

About Kay County Drinking Water

Kay County is served by 8 water systems covering 11 communities. No community here has an open violation on record.

Of the communities reporting lead results, 6 recorded a detection, with a median of 1.30 ppb — 9% of the federal action level. 5 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 7 of them.

Frequently Asked Questions

Is Kay County tap water safe to drink?▼
No community in Kay County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Kay County?▼
Among communities with a detection the median is 1.30 ppb, 9% of the 15 ppb action level. 5 reported none detected and 0 reported no result.
How many water systems serve Kay County?▼
8 community water systems serve 11 communities here.
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