PlainWater

Logan County, Oklahoma

SDWIS compliance plate

Sheet OK083 · Logan County 31 sys · 7,336 viol · #1449/3254

VIOL-SEVERE · HEALTH-LOW · RANK-MID · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 17.4% health
  • RANK-MID #1449/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 100.0% detect
  • SRC-GW GW lead 87%
  • SYS-SMALL 31 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Tulsa County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Logan County ranks #1,449 of 3,254 counties by people served, and #29 of 77 counties in Oklahoma. See methodology · corpus placement.

Logan County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 17.4% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,449 of 3,254 · #29 of 77 in Oklahoma.

Flagged-rate neighbourhood around Logan County

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

0% 20% 40% 60% 80% 100% Murray · lowest Cimarron · highest Payne · near Canadian · near 88.9% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Guthrie 9,925 83 Detected
Logan Co RWD #1 8,907 316 Detected
Langston PWA 1,670 515 -
Logan Co RWS & Swmd #3 1,618 100 -
Crescent 1,411 72 -
Logan Co RWD #2 1,146 714 -
Whispering Oaks 350 101 -
Chisholm Springs Event Center 325 50 -
Coyle 289 141 -
Marshall 258 48 -
Mulhall 225 54 -
Orlando 201 14 -
Crescent VFW Post 7740 200 20 -
Blue Quail Logan County 188 304 -
Sham-Rock-Chalk, LLC 155 9 -
Oak Hills Industrial Development 100 26 -
Peppers Ranch 99 679 -
Pioneer RV Park 70 10 -
Waterloo Commercial Development 60 44 -
Cimarron National Golf Course 50 25 -
Arledge Ventures 40 43 -
Railhead BBQ 40 17 -
Twin Lakes Sportsman Club, Inc 40 32 -
Elks Lodge 2578 Edmond 35 41 -
Rock Creek 33 2,734 -
Lazy E Training Center 30 893 -
The Ridge on Penn HOA 30 41 -
Dollar General Store #15858 30 8 -
Rodeo Corner 25 141 -
Twin Cedars Camp 25 39 -
Lazy E Arena 25 22 -

Compare beyond Oklahoma

Mid-flagged peers for Logan County

Cross-state counties nearest Logan County on flagged-system share (100.0%) and cumulative violation count (7,336). 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.