Petroleum County, Montana
SDWIS compliance plate
Sheet MT069 · Petroleum County 1 sys · 1,002 viol · #3239/3254
VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-TINY · BOOK-MOST
- VIOL-SEVERE 100.0% flagged
- HEALTH-LOW 0.2% health
- RANK-BOTTOM #3239/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-NONE No UCMR5 set
- SRC-GW GW lead 100%
- SYS-TINY 1 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, Petroleum County ranks #3,239 of 3,254 counties by people served, and #56 of 56 counties in Montana. See methodology · corpus placement.
Petroleum 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 0.2% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Petroleum County . Population served ranks #3,239 of 3,254 · #56 of 56 in Montana.
Flagged-rate neighbourhood around Petroleum County
Lowest/highest poles plus in-state counties nearest Petroleum County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Winnett Town Of | 187 | 1,002 | - |
Compare beyond Montana
Mid-flagged peers for Petroleum County
Cross-state counties nearest Petroleum County on flagged-system share (100.0%) and cumulative violation count (1,002). In-state neighbours stay on the compliance plate above.
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.