PlainWater

Oneida County, Idaho

SDWIS compliance plate

Sheet ID071 · Oneida County 10 sys · 218 viol · #2981/3254

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

  • VIOL-SEVERE 90.0% flagged
  • HEALTH-LOW 13.3% health
  • RANK-BOTTOM #2981/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-SMALL 10 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Custer County ( -0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Oneida County ranks #2,981 of 3,254 counties by people served, and #40 of 44 counties in Idaho. See methodology · corpus placement.

Oneida County standing, lower-flagged corpus third

Flagged-system rate 90.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.3% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Oneida County . Population served ranks #2,981 of 3,254 · #40 of 44 in Idaho.

Flagged-rate neighbourhood around Oneida County

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

0% 20% 40% 60% 80% 100% Valley · lowest Oneida · this county Gooding · near 89.5% 89.7% 90% 92% 92.3% 100%

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

Water Systems

Compare beyond Idaho

Lower-flagged peers for Oneida County

Cross-state counties nearest Oneida County on flagged-system share (90.0%) and cumulative violation count (218). 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.