PlainWater

Lincoln County, Oklahoma

SDWIS compliance plate

Sheet OK081 · Lincoln County 22 sys · 10,255 viol · #1879/3254

VIOL-SEVERE · HEALTH-MID · RANK-MID · PHOTO-FINISH · PFAS-NONE · SRC-SW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 95.5% flagged
  • HEALTH-MID 33.0% health
  • RANK-MID #1879/3254
  • PHOTO-FINISH ±0.4 pp
  • PFAS-NONE No UCMR5 set
  • SRC-SW SW lead 50%
  • SYS-SMALL 22 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Cleveland County (+ 0.4 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Lincoln County ranks #1,879 of 3,254 counties by people served, and #43 of 77 counties in Oklahoma. See methodology · corpus placement.

Lincoln County standing, mid-flagged corpus third

Flagged-system rate 95.5% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 33.0% is health-based share above the upper third (> 24.5%) . No UCMR5 tests in this extract for Lincoln County . Population served ranks #1,879 of 3,254 · #43 of 77 in Oklahoma.

Flagged-rate neighbourhood around Lincoln County

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

0% 20% 40% 60% 80% 100% Murray · lowest Cleveland · near Pottawatomie · near Cimarron · highest 88.9% 95.5% 95.9% 96% 96.3% 96.7% 100%

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

Water Systems

Compare beyond Oklahoma

Mid-flagged peers for Lincoln County

Cross-state counties nearest Lincoln County on flagged-system share (95.5%) and cumulative violation count (10,255). 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.