PlainWater

Ellis County, Oklahoma

SDWIS compliance plate

Sheet OK045 · Ellis County 7 sys · 1,949 viol · #3024/3254

VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-TINY · BOOK-MOST

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 3.7% health
  • RANK-BOTTOM #3024/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-TINY 7 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Ellis County ranks #3,024 of 3,254 counties by people served, and #75 of 77 counties in Oklahoma. See methodology · corpus placement.

Ellis 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 3.7% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Ellis County . Population served ranks #3,024 of 3,254 · #75 of 77 in Oklahoma.

Flagged-rate neighbourhood around Ellis County

Lowest/highest poles plus in-state counties nearest Ellis 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
Shattuck 1,200 145 -
Arnett 496 892 -
Gage 429 143 -
Fargo 326 119 -
Tumbleweed Sagebrush Site 45 357 -
Ellis Co Rwd#1 43 39 -
Select 9 Site 30 254 -

Compare beyond Oklahoma

Mid-flagged peers for Ellis County

Cross-state counties nearest Ellis County on flagged-system share (100.0%) and cumulative violation count (1,949). 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.