PlainWater

Nemaha County, Kansas

SDWIS compliance plate

Sheet KS131 · Nemaha County 11 sys · 339 viol · #2388/3254

VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · BELOW-PEER · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 90.9% flagged
  • HEALTH-LOW 19.8% health
  • RANK-LOWER #2388/3254
  • BELOW-PEER 1.9 pp cleaner
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 82%
  • SYS-SMALL 11 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Douglas County (+ 1.9 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Nemaha County ranks #2,388 of 3,254 counties by people served, and #39 of 105 counties in Kansas. See methodology · corpus placement.

Nemaha County standing, lower-flagged corpus third

Flagged-system rate 90.9% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 19.8% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Nemaha County . Population served ranks #2,388 of 3,254 · #39 of 105 in Kansas.

Flagged-rate neighbourhood around Nemaha County

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

0% 20% 40% 60% 80% 100% Chase · lowest Nemaha · this county 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
Nemaha Co RWD 3 2,800 12 -
Sabetha, City Of 2,519 63 -
Seneca, City Of 2,130 12 -
Centralia, City Of 486 71 -
Nemaha Co RWD 4 448 0 -
Nemaha Co RWD 1 350 1 -
Wetmore, City Of 348 17 -
Corning, City Of 213 36 -
Bern, City Of 163 7 -
Goff, City Of 105 29 -
Oneida, City Of 58 91 -

Compare beyond Kansas

Lower-flagged peers for Nemaha County

Cross-state counties nearest Nemaha County on flagged-system share (90.9%) and cumulative violation count (339). 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.