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Counties → Oklahoma

Oklahoma County, Oklahoma

SDWIS compliance plate

Sheet OK109 · Oklahoma County 121 sys · 20,669 viol · #67/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · ABOVE-PEER · PFAS-MID · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 93.4% flagged
  • HEALTH-LOW 5.8% health
  • RANK-TOP #67/3254
  • ABOVE-PEER +1.1 pp
  • PFAS-MID 41.7% detect
  • SRC-GW GW lead 93%
  • SYS-LARGE 121 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: McClain County ( -1.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Oklahoma County ranks #67 of 3,254 counties by people served, and #1 of 77 counties in Oklahoma. See methodology · corpus placement.

Oklahoma County standing, mid-flagged corpus third

Flagged-system rate 93.4% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 5.8% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 41.7% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #67 of 3,254 · #1 of 77 in Oklahoma.

Flagged-rate neighbourhood around Oklahoma County

Lowest/highest poles plus in-state counties nearest Oklahoma County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Murray · lowest McClain · near Lincoln · near Cimarron · highest 88.9% 90.9% 92.3% 93.4% 95.5% 95.9% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Oklahoma City 644,000 34 Detected
Edmond PWA 79,408 153 Detected
Midwest City 55,935 85 Clean
Tinker Air Force Base 24,645 47 Detected
Del City 22,128 19 Detected
Bethany 20,307 137 Detected
Deer Creek Rural Water Corp 5,500 134 Clean
Harrah 4,190 291 Clean
Nichols Hills 4,020 279 Clean
Choctaw 3,926 270 Clean
Spencer 3,746 563 Clean
Oklahoma City Zoo 2,500 358 -
Tinker Afb Family Housing 2,100 15 -
Okla Christian University 1,800 152 Clean
Jones 1,727 75 -
Choctaw RD Baptist Church 1,300 6 -
Frontier City 1,040 411 -
Sooner Utilities-Valley Brook 853 183 -
Luther 650 256 -
Sooner Utilities-Tinker Town 603 131 -
Hillcrest MHP 400 87 -
Sooner Utilities-Crosby #2 385 190 -
Barnes School 371 34 -
Nicoma Park 318 386 -
Arcadia Public Works Authority 300 31 -
Eleven Oaks Ranch Event Center 299 32 -
Broken Horn Ranch Event Center 299 53 -
Jones State Central Middle School 280 254 -
Choctaw-Nicoma Park (Chs Boren Center) 250 17 -
Lds Church of Choctaw 250 66 -
High Chaparral Estates MHP 225 113 -
Timberland Mhc 200 316 -
Econo Lodge 200 85 -
Summit Ridge Retirement Center, Inc. 200 388 -
Abes RV Park 175 2,043 -
Sherwood Forest Mobile Estates 172 1,384 -
Sooner Utilities-Crosby #1 168 438 -
Sooner Utilities - Circle C Estates 155 277 -
Shiloh Summer Camp, Inc. 155 23 -
Waterloo Road Baptist Church 150 48 -
Oklahoma City East KOA 150 50 -
Friendship Pentecostal Church 150 28 -
Hilltop MHP 125 262 -
Skyline MHP 120 649 -
Coffee Creek MHP, LLC 120 144 -
Sooner East Church of Christ 120 0 -
Choctaw Estates, LLC 105 208 -
Holliday Outt MHP 100 201 -
Delling #2 LLC 100 202 -
Pops Restaurant 100 21 -

Compare beyond Oklahoma

Mid-flagged peers for Oklahoma County

Cross-state counties nearest Oklahoma County on flagged-system share (93.4%) and cumulative violation count (20,669). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.