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Counties → Montana

Stillwater County, Montana

SDWIS compliance plate

Sheet MT095 · Stillwater County 31 sys · 5,741 viol · #2483/3254

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

  • VIOL-SEVERE 93.5% flagged
  • HEALTH-LOW 10.7% health
  • RANK-LOWER #2483/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 97%
  • SYS-SMALL 31 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Stillwater County ranks #2,483 of 3,254 counties by people served, and #26 of 56 counties in Montana. See methodology · corpus placement.

Stillwater County standing, mid-flagged corpus third

Flagged-system rate 93.5% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 10.7% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Stillwater County . Population served ranks #2,483 of 3,254 · #26 of 56 in Montana.

Flagged-rate neighbourhood around Stillwater County

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

0% 20% 40% 60% 80% 100% Powder River · lowest Park · near Stillwater · this county Petroleum · highest 66.7% 93.1% 93.1% 93.3% 93.5% 93.5% 100%

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

Water Systems

System Name Population Violations PFAS
Columbus Town Of 1,900 188 -
Cenex Zip Trip Num 50 1,500 90 -
Absarokee Water and Sewer Dist 1,100 405 -
Columbus Rest Area Eastbound 800 96 -
Columbus Rest Area Westbound 800 78 -
Stillwater Mining Company 630 53 -
Park City School K 12 300 164 -
Beartooth Christian Camp 205 82 -
Rockin J Inc 150 111 -
Woodbine Cg Lower Well 2 102 42 -
Country Haven Estates Whispering Pines 100 172 -
Lds Church Absarokee 80 51 -
Rapelje Water District 70 560 -
Stillwater Bar and Grille 65 124 -
Cathedral Mountain Ranch 58 85 -
Pops Inn 50 141 -
Eagle Mountain Rural PWS 50 80 -
Mountain Range RV Park 50 22 -
Hilltop Water 50 0 -
Reed Point High School and Gym 46 222 -
Columbus Iga 33 12 -
Beartooth Ranch 30 16 -
Valley Farmers Supply 30 473 -
Tippet Rise LLC 30 0 -
Emerald Lake Campground 30 44 -
Carters Camp Nye 29 110 -
Old West RV Park and Campground 29 61 -
Waterhole Saloon Reedpoint 25 1,265 -
Montasia 25 141 -
Scotsman Bar and Cafe 25 348 -
Sherwood Water Station 25 505 -

Compare beyond Montana

Mid-flagged peers for Stillwater County

Cross-state counties nearest Stillwater County on flagged-system share (93.5%) and cumulative violation count (5,741). 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

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

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.