Johnson County, Wyoming
SDWIS compliance plate
Sheet WY019 · Johnson County 13 sys · 351 viol · #2742/3254
VIOL-SEVERE · HEALTH-MID · RANK-BOTTOM · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-MID 23.6% health
- RANK-BOTTOM #2742/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 85%
- SYS-SMALL 13 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Sheridan County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Johnson County ranks #2,742 of 3,254 counties by people served, and #21 of 23 counties in Wyoming. See methodology · corpus placement.
Johnson County standing, mid-flagged corpus third
Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 23.6% 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 #2,742 of 3,254 · #21 of 23 in Wyoming.
Flagged-rate neighbourhood around Johnson County
Lowest/highest poles plus in-state counties nearest Johnson County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Buffalo, City Of | 4,419 | 45 | Clean |
| Kaycee, Town Of | 263 | 24 | - |
| Hf Bar Ranch | 153 | 24 | - |
| Bald Mountain Trailer Court | 150 | 44 | - |
| Lake Stop LLC | 112 | 20 | - |
| Paradise Guest Ranch | 90 | 20 | - |
| Fort Phil Kearny St Hist Site | 89 | 19 | - |
| South Fork Mountain Lodge | 76 | 38 | - |
| YMCA of the Big Horns Camp Roberts | 40 | 80 | - |
| Bighorn Nf-Leigh Creek Dump Station | 40 | 2 | - |
| Bhnf-Tie Hack Cg | 35 | 16 | - |
| Bighorn Mountain Campground | 29 | 16 | - |
| WY DOT-Powder River Ra | 27 | 3 | - |
Compare beyond Wyoming
Mid-flagged peers for Johnson County
Cross-state counties nearest Johnson County on flagged-system share (100.0%) and cumulative violation count (351). 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.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
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.