PlainWater

McKenzie County, North Dakota

SDWIS compliance plate

Sheet ND053 · McKenzie County 16 sys · 549 viol · #2182/3254

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

  • VIOL-SEVERE 87.5% flagged
  • HEALTH-LOW 10.6% health
  • RANK-LOWER #2182/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 75%
  • SYS-SMALL 16 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, McKenzie County ranks #2,182 of 3,254 counties by people served, and #11 of 52 counties in North Dakota. See methodology · corpus placement.

McKenzie County standing, lower-flagged corpus third

Flagged-system rate 87.5% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 10.6% is health-based share in the middle 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 #2,182 of 3,254 · #11 of 52 in North Dakota.

Flagged-rate neighbourhood around McKenzie County

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

0% 20% 40% 60% 80% 100% Morton · lowest McKenzie · this county Rolette · near Slope · highest 61.5% 83.3% 87.5% 87.5% 87.5% 88.9% 100%

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

Water Systems

Compare beyond North Dakota

Lower-flagged peers for McKenzie County

Cross-state counties nearest McKenzie County on flagged-system share (87.5%) and cumulative violation count (549). 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.