PlainWater

Washington County, Kansas

SDWIS compliance plate

Sheet KS201 · Washington County 12 sys · 995 viol · #2764/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-MID 28.3% health
  • RANK-BOTTOM #2764/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-SMALL 12 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Washington County ranks #2,764 of 3,254 counties by people served, and #58 of 105 counties in Kansas. See methodology · corpus placement.

Washington 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 28.3% is health-based share above the upper third (> 24.5%) . No UCMR5 tests in this extract for Washington County . Population served ranks #2,764 of 3,254 · #58 of 105 in Kansas.

Flagged-rate neighbourhood around Washington County

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

0% 20% 40% 60% 80% 100% Chase · lowest Greeley · highest Wyandotte · near Leavenworth · near 85.7% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Washington Co RWD 1 1,093 10 -
Washington, City Of 1,065 6 -
Hanover, City Of 689 112 -
Washington Co RWD 2 673 54 -
Clifton, City Of 455 27 -
Linn, City Of 382 30 -
Greenleaf, City Of 347 109 -
Barnes, City Of 161 240 -
Palmer, City Of 125 70 -
Morrowville, City Of 115 31 -
Haddam, City Of 109 183 -
Mahaska, City Of 44 123 -

Compare beyond Kansas

Mid-flagged peers for Washington County

Cross-state counties nearest Washington County on flagged-system share (100.0%) and cumulative violation count (995). 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.