PlainWater

Douglas County, Kansas

SDWIS compliance plate

Sheet KS045 · Douglas County 14 sys · 244 viol · #410/3254

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

  • VIOL-SEVERE 92.9% flagged
  • HEALTH-MID 23.0% health
  • RANK-TOP #410/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-HIGH 50.0% detect
  • SRC-SW SW lead 86%
  • SYS-SMALL 14 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Sedgwick County (+ 0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Douglas County ranks #410 of 3,254 counties by people served, and #4 of 105 counties in Kansas. See methodology · corpus placement.

Douglas County standing, mid-flagged corpus third

Flagged-system rate 92.9% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 23.0% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #410 of 3,254 · #4 of 105 in Kansas.

Flagged-rate neighbourhood around Douglas County

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

0% 20% 40% 60% 80% 100% Chase · lowest Nemaha · near Sedgwick · near Greeley · highest 85.7% 88.9% 90.9% 92.9% 93.1% 94.4% 100%

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

Water Systems

System Name Population Violations PFAS
Lawrence, City Of 95,256 12 Detected
University of Kansas 35,000 28 Detected
Eudora, City Of 6,449 6 Clean
Baldwin City, City Of 4,882 45 Clean
Douglas Co RWD 3 4,663 37 Detected
Douglas Co RWD 4 3,000 26 Clean
Douglas Co RWD 5 2,500 8 -
Douglas Co RWD 1 1,400 8 -
Douglas Co RWD 2 1,163 24 -
Lecompton, City Of 592 11 -
Douglas Co RWD 6 360 25 -
Lawrence Kta 25 11 -
Clinton Reservoir 25 3 -
Public Wholesale WSD 25 1 0 -

Compare beyond Kansas

Mid-flagged peers for Douglas County

Cross-state counties nearest Douglas County on flagged-system share (92.9%) and cumulative violation count (244). 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.