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Oklahoma County, OK Water Quality

Water quality data for 13 public water systems serving Oklahoma County, Oklahoma — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 13 water systems · 20 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

Oklahoma County Earns a B

Oklahoma County: 20 communities across 13 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.60 ppb
  • 8 communities with a lead detection, 12 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 10 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.6 ppb
Median Lead Level
County-wide, 90th percentile
13
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
  • Oklahoma City
    Not detected
    No federal limits exceeded on record
    A
  • Edmond
    0.80 ppb
    No federal limits exceeded on record
    A
  • Midwest City
    1.20 ppb
    No federal limits exceeded on record
    A
  • Warr Acres
    Not detected
    No federal limits exceeded on record
    A
  • The Village
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Nicoma Park
    32.20 ppb
    Lead above the 15 ppb action level
    C
  • Harrah
    1.10 ppb
    2 significant inspection deficiencies
    C
  • Jones
    Not detected
    1 significant inspection deficiency
    C
  • Arcadia
    2.10 ppb
    2 significant inspection deficiencies
    C
  • Choctaw
    11.40 ppb
    1 significant inspection deficiency
    B
County Lead Level — Median 1.6 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.6 ppb — 10.7% of the federal action level
Systems by Lead Level
Under 5 ppb
6
10 – 15 ppb
2
No Data
12

All Cities in Oklahoma County

Oklahoma City Not detected A
Edmond 0.80 ppb A
Midwest City 1.20 ppb A
Del City 1.60 ppb B
Bethany Not detected B
Warr Acres Not detected A
The Village Not detected A
Choctaw 11.40 ppb B
Harrah 1.10 ppb C
Nichols Hills Not detected B
Spencer Not detected B
Jones Not detected C
Luther Not detected B
Valley Brook Not detected A
Forest Park Not detected A
Nicoma Park 32.20 ppb C
Woodlawn Park Not detected B
Arcadia 2.10 ppb C
Lake Aluma Not detected A
Smith Village 1.60 ppb B
Showing 20 cities
No active violations Active violations

About Oklahoma County Drinking Water

Oklahoma County is served by 13 water systems covering 20 communities. No community here has an open violation on record.

Of the communities reporting lead results, 8 recorded a detection, with a median of 1.60 ppb — 11% of the federal action level. 12 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 10 of them.

Frequently Asked Questions

Is Oklahoma County tap water safe to drink?▼
No community in Oklahoma County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Oklahoma County?▼
Among communities with a detection the median is 1.60 ppb, 11% of the 15 ppb action level. 12 reported none detected and 0 reported no result.
How many water systems serve Oklahoma County?▼
13 community water systems serve 20 communities here.
← Back to Oklahoma water quality overview