PlainWater

Wayne County, Iowa

SDWIS compliance plate

Sheet IA185 · Wayne County 5 sys · 1,525 viol · #2950/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 0.0% health
  • RANK-BOTTOM #2950/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-SW SW lead 100%
  • SYS-TINY 5 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Wayne County ranks #2,950 of 3,254 counties by people served, and #94 of 99 counties in Iowa. See methodology · corpus placement.

Wayne 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 0.0% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Wayne County . Population served ranks #2,950 of 3,254 · #94 of 99 in Iowa.

Flagged-rate neighbourhood around Wayne County

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

0% 20% 40% 60% 80% 100% Mahaska · lowest Ringgold · highest Decatur · near Des Moines · near 75% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Corydon Water Supply 1,610 1,441 -
Seymour Municipal Utility Water Dept 637 18 -
Humeston Water Plant 462 55 -
Allerton Water Works 430 4 -
Lineville Water Supply 250 7 -

Compare beyond Iowa

Mid-flagged peers for Wayne County

Cross-state counties nearest Wayne County on flagged-system share (100.0%) and cumulative violation count (1,525). 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.