PlainWater

Osage County, Oklahoma

SDWIS compliance plate

Sheet OK113 · Osage County 30 sys · 16,200 viol · #1262/3254

VIOL-SEVERE · HEALTH-HIGH · RANK-UPPER · PHOTO-FINISH · PFAS-HIGH · SRC-SW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 96.7% flagged
  • HEALTH-HIGH 48.7% health
  • RANK-UPPER #1262/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-HIGH 66.7% detect
  • SRC-SW SW lead 70%
  • SYS-SMALL 30 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Grady County (+ 0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Osage County ranks #1,262 of 3,254 counties by people served, and #26 of 77 counties in Oklahoma. See methodology · corpus placement.

Osage County standing, mid-flagged corpus third

Flagged-system rate 96.7% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 48.7% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 66.7% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,262 of 3,254 · #26 of 77 in Oklahoma.

Flagged-rate neighbourhood around Osage County

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

0% 20% 40% 60% 80% 100% Murray · lowest Pottawatomie · near Grady · near Cimarron · highest 88.9% 96% 96.3% 96.7% 96.8% 97.1% 100%

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

Water Systems

System Name Population Violations PFAS
Skiatook PWA 8,110 379 Detected
Osage Co RWD #15 6,647 75 Detected
Pawhuska 3,800 230 Clean
Hominy 2,584 1,361 -
McCord RWD #3 1,800 10 -
Fairfax 1,555 1,509 -
Osage Co RWD #21 1,500 407 -
Barnsdall 1,243 2,431 -
Osage Co RWD # 1 930 89 -
Osage Co RWS & Swd #3 (Braden) 700 49 -
Osage Co RWD # 5 561 598 -
Wynona 450 166 -
Strike-Axe Hwy 60 450 32 -
Shidler 404 983 -
Prue PWA 387 406 -
Avant Utilities Authority 361 831 -
Osage Co RWD #20 (Hulah) 350 1,192 -
Osage Co RWD #18 (Evergreen) 302 365 -
Osage PWA 275 164 -
Strike Axe (Chimney Rock) 275 11 -
Frontier Shores POA Water Dept 200 382 -
Burbank 150 94 -
Wynona School 140 53 -
Strikeaxe Airport 125 10 -
Grayhorse RWD 100 414 -
Osage Park Addn Prop 65 903 -
Diamondhead Homeowners Assoc 50 82 -
Walnut Park Estates 42 2,854 -
Dollar General #20868 26 0 -
Walnut Creek Park 25 120 -

Compare beyond Oklahoma

Mid-flagged peers for Osage County

Cross-state counties nearest Osage County on flagged-system share (96.7%) and cumulative violation count (16,200). 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
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.