PlainWater

Judith Basin County, Montana

SDWIS compliance plate

Sheet MT045 · Judith Basin County 8 sys · 2,032 viol · #3164/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 5.4% health
  • RANK-BOTTOM #3164/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 100%
  • SYS-TINY 8 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Judith Basin County ranks #3,164 of 3,254 counties by people served, and #49 of 56 counties in Montana. See methodology · corpus placement.

Judith Basin 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 5.4% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Judith Basin County . Population served ranks #3,164 of 3,254 · #49 of 56 in Montana.

Flagged-rate neighbourhood around Judith Basin County

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

0% 20% 40% 60% 80% 100% Powder River · lowest Petroleum · highest Mineral · near Madison · near 66.7% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
Stanford Town Of 425 859 -
Hobson School 150 416 -
Geyser Judith Basin Cty Water Sewer Dist 125 251 -
Hobson Town Of 125 120 -
Surprise Creek Colony 80 154 -
Tall Boys Tavern 60 95 -
Full Curl Smokers 54 84 -
Oxen Yoke Inn Inc Utica 50 53 -

Compare beyond Montana

Mid-flagged peers for Judith Basin County

Cross-state counties nearest Judith Basin County on flagged-system share (100.0%) and cumulative violation count (2,032). 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.