PlainWater

Clay County, Nebraska

SDWIS compliance plate

Sheet NE035 · Clay County 14 sys · 1,111 viol · #2739/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-HIGH 82.9% health
  • RANK-BOTTOM #2739/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-SMALL 14 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Clay County ranks #2,739 of 3,254 counties by people served, and #41 of 93 counties in Nebraska. See methodology · corpus placement.

Clay 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 82.9% is health-based share above the upper third (> 24.5%) . No UCMR5 tests in this extract for Clay County . Population served ranks #2,739 of 3,254 · #41 of 93 in Nebraska.

Flagged-rate neighbourhood around Clay County

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

0% 20% 40% 60% 80% 100% Kimball · lowest Blaine · highest Colfax · near Cuming · near 57.1% 100% 100% 100% 100% 100% 100%

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

Water Systems

Compare beyond Nebraska

Mid-flagged peers for Clay County

Cross-state counties nearest Clay County on flagged-system share (100.0%) and cumulative violation count (1,111). 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.