PlainWater

Jefferson County, Nebraska

SDWIS compliance plate

Sheet NE095 · Jefferson County 17 sys · 636 viol · #2575/3254

VIOL-SEVERE · HEALTH-HIGH · RANK-LOWER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 88.2% flagged
  • HEALTH-HIGH 75.3% health
  • RANK-LOWER #2575/3254
  • PHOTO-FINISH ±0.7 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 82%
  • SYS-SMALL 17 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Merrick County (+ 0.7 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Jefferson County ranks #2,575 of 3,254 counties by people served, and #35 of 93 counties in Nebraska. See methodology · corpus placement.

Jefferson County standing, lower-flagged corpus third

Flagged-system rate 88.2% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 75.3% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #2,575 of 3,254 · #35 of 93 in Nebraska.

Flagged-rate neighbourhood around Jefferson County

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

0% 20% 40% 60% 80% 100% Kimball · lowest Howard · near Jefferson · this county Blaine · highest 57.1% 87.5% 87.5% 87.5% 88.2% 88.9% 100%

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

Water Systems

Compare beyond Nebraska

Lower-flagged peers for Jefferson County

Cross-state counties nearest Jefferson County on flagged-system share (88.2%) and cumulative violation count (636). 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.