Big Horn County, Wyoming
SDWIS compliance plate
Sheet WY003 · Big Horn County 28 sys · 799 viol · #2225/3254
VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-LOW 14.3% health
- RANK-LOWER #2225/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 82%
- SYS-SMALL 28 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, Big Horn County ranks #2,225 of 3,254 counties by people served, and #14 of 23 counties in Wyoming. See methodology · corpus placement.
Big Horn 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 14.3% 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 #2,225 of 3,254 · #14 of 23 in Wyoming.
Flagged-rate neighbourhood around Big Horn County
Lowest/highest poles plus in-state counties nearest Big Horn County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Greybull, Town Of | 3,260 | 93 | - |
| Lovell, Town Of | 2,360 | 27 | Clean |
| Basin, Town Of | 1,250 | 20 | - |
| South Big Horn County Jpb | 900 | 10 | - |
| Cowley, Town Of | 800 | 47 | - |
| Byron, Town Of | 593 | 9 | - |
| Antelope Butte Ski Area | 527 | 20 | - |
| Burlington, Town Of | 348 | 23 | - |
| Medicine Lodge St Hist Site | 230 | 7 | - |
| Deaver Municipal Water System | 176 | 18 | - |
| Frannie, Town Of | 160 | 28 | - |
| South End Water Users S&i District | 150 | 24 | - |
| Shell Town Water Improvement District | 120 | 9 | - |
| Manderson, Town Of | 110 | 21 | - |
| Bhnf-Boulder Park Cg | 100 | 16 | - |
| Bhnf-Sitting Bull Cg | 100 | 20 | - |
| American Colloid Company | 93 | 31 | - |
| Georgia-Pacific Gypsum LLC | 90 | 37 | - |
| Greybull Heights Water Users | 84 | 12 | - |
| Bentonite Performance Minerals/Lovell | 68 | 19 | - |
| Hyattville S&i District | 66 | 195 | - |
| Scharen Subdivision | 50 | 2 | - |
| Bighorn Canyon Nat'l Rec. Area | 40 | 4 | - |
| Bhnf-Ranger Creek Cg | 40 | 17 | - |
| Wyoming High Country, LLC | 35 | 10 | - |
| Bighorn Nf-Tyrrell Work Center | 30 | 10 | - |
| Camp Paintrock | 25 | 59 | - |
| Blm - Five Springs Campground | 25 | 11 | - |
Compare beyond Wyoming
Mid-flagged peers for Big Horn County
Cross-state counties nearest Big Horn County on flagged-system share (100.0%) and cumulative violation count (799). 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.