Fergus County, Montana
SDWIS compliance plate
Sheet MT027 · Fergus County 20 sys · 4,498 viol · #2264/3254
VIOL-SEVERE · HEALTH-MID · RANK-LOWER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 95.0% flagged
- HEALTH-MID 22.2% health
- RANK-LOWER #2264/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 95%
- SYS-SMALL 20 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Broadwater County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Fergus County ranks #2,264 of 3,254 counties by people served, and #15 of 56 counties in Montana. See methodology · corpus placement.
Fergus County standing, mid-flagged corpus third
Flagged-system rate 95.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 22.2% 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 #2,264 of 3,254 · #15 of 56 in Montana.
Flagged-rate neighbourhood around Fergus County
Lowest/highest poles plus in-state counties nearest Fergus County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Lewistown City Of | 5,923 | 512 | Clean |
| Lehrkinds Big Spring Water | 2,575 | 45 | - |
| Eddies Corner | 503 | 25 | - |
| K-M Scout Ranch Water System | 325 | 0 | - |
| Mountain Acres Mb Hm Pk | 320 | 84 | - |
| Winifred Town Of | 274 | 438 | - |
| Denton Town Of | 255 | 392 | - |
| Moore Town Of | 186 | 30 | - |
| Pine Meadows Golf Course Elks 456 The | 130 | 144 | - |
| Roy Water and Sewer District | 110 | 122 | - |
| Grass Range Town Of | 102 | 198 | - |
| Big Sky Grocery Unapproved | 90 | 6 | - |
| HI Heat Industries Inc | 75 | 1,120 | - |
| Ayers Hutterite Colony | 58 | 56 | - |
| King Ranch Colony | 56 | 625 | - |
| Deerfield Hutterite Colony | 51 | 233 | - |
| Spring Creek Colony Lewistown | 48 | 235 | - |
| Judith Mountain Lodge Unapproved | 30 | 20 | - |
| The Hideaway | 26 | 119 | - |
| Judith Shadows Golf Course | 25 | 94 | - |
Compare beyond Montana
Mid-flagged peers for Fergus County
Cross-state counties nearest Fergus County on flagged-system share (95.0%) and cumulative violation count (4,498). 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.