PlainWater

Toole County, Montana

SDWIS compliance plate

Sheet MT101 · Toole County 18 sys · 2,939 viol · #2656/3254

VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL

  • VIOL-SEVERE 88.9% flagged
  • HEALTH-LOW 10.2% health
  • RANK-BOTTOM #2656/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 89%
  • SYS-SMALL 18 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Toole County ranks #2,656 of 3,254 counties by people served, and #31 of 56 counties in Montana. See methodology · corpus placement.

Toole County standing, lower-flagged corpus third

Flagged-system rate 88.9% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 10.2% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #2,656 of 3,254 · #31 of 56 in Montana.

Flagged-rate neighbourhood around Toole County

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

0% 20% 40% 60% 80% 100% Powder River · lowest Sanders · near Glacier · near Petroleum · highest 66.7% 87.5% 88.6% 88.9% 88.9% 91.3% 100%

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

Water Systems

Compare beyond Montana

Lower-flagged peers for Toole County

Cross-state counties nearest Toole County on flagged-system share (88.9%) and cumulative violation count (2,939). 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.