PlainWater

Crook County, Wyoming

SDWIS compliance plate

Sheet WY011 · Crook County 27 sys · 675 viol · #2459/3254

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

  • VIOL-SEVERE 96.3% flagged
  • HEALTH-LOW 15.1% health
  • RANK-LOWER #2459/3254
  • PHOTO-FINISH ±0.5 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-SMALL 27 systems
  • BOOK-MOST 6/7 fields

Nearest flagged-rate peer: Albany County ( -0.5 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Crook County ranks #2,459 of 3,254 counties by people served, and #17 of 23 counties in Wyoming. See methodology · corpus placement.

Crook County standing, mid-flagged corpus third

Flagged-system rate 96.3% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 15.1% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Crook County . Population served ranks #2,459 of 3,254 · #17 of 23 in Wyoming.

Flagged-rate neighbourhood around Crook County

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

0% 20% 40% 60% 80% 100% Teton · lowest Campbell · near Albany · near Niobrara · highest 87.1% 95.5% 95.6% 95.7% 95.8% 96.3% 100%

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

Water Systems

Compare beyond Wyoming

Mid-flagged peers for Crook County

Cross-state counties nearest Crook County on flagged-system share (96.3%) and cumulative violation count (675). 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.