County profile · EPA SDWIS + UCMR5
Granite County, Montana
21 SDWIS-listed public water systems serve 7,984 people in Granite County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 21
- SDWIS water systems Middle third of counties
- 2,193
- Total violations Middle third of counties
- 95.2%
- SDWIS systems w/ a violation Middle third of counties
- -
- UCMR5 PFAS (none tested) No UCMR5 tests
SDWIS compliance plate
Sheet MT039 · Granite County 21 sys · 2,193 viol · #2523/3254
VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST
- VIOL-SEVERE 95.2% flagged
- HEALTH-LOW 13.8% health
- RANK-LOWER #2523/3254
- PHOTO-FINISH ±0.2 pp
- PFAS-NONE No UCMR5 set
- SRC-GW GW lead 95%
- SYS-SMALL 21 systems
- BOOK-MOST 6/7 fields
Nearest flagged-rate peer: Missoula County ( -0.2 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Granite County ranks #2,523 of 3,254 counties by people served, and #27 of 56 counties in Montana. See methodology · corpus placement.
Granite County standing, mid-flagged corpus third
Flagged-system rate 95.2% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.8% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Granite County . Population served ranks #2,523 of 3,254 · #27 of 56 in Montana.
Flagged-rate neighbourhood around Granite County
Lowest/highest poles plus in-state counties nearest Granite County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Bearmouth Rest Stop Eastbound | 2,000 | 47 | - |
| Bearmouth Rest Stop Westbound | 2,000 | 105 | - |
| Philipsburg Town Of | 1,360 | 239 | - |
| Fics Kwik Six | 405 | 18 | - |
| Discovery Ski Area | 401 | 100 | - |
| Parkers | 256 | 91 | - |
| Garnet Ghost Town Blm | 254 | 32 | - |
| Drummond High School 1 | 191 | 242 | - |
| Drummond Elementary School 2 | 191 | 628 | - |
| Lds Church Drummond | 160 | 58 | - |
| Philipsburg Bay Campground | 138 | 24 | - |
| Rocking J Ranch | 130 | 73 | - |
| Piney Campground | 94 | 48 | - |
| Bearmouth RV Park | 92 | 96 | - |
| Shakopee Heights Water District | 70 | 15 | - |
| Lodgepole Campground | 61 | 12 | - |
| Swedes Corner Bar | 50 | 190 | - |
| Drummond Motel | 40 | 57 | - |
| Rocking J Ranch Employee Housing | 39 | 72 | - |
| Granite Water Works | 27 | 46 | - |
| Rocking J Ranch East | 25 | 0 | - |
Compare beyond Montana
Mid-flagged peers for Granite County
Cross-state counties nearest Granite County on flagged-system share (95.2%) and cumulative violation count (2,193). 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. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.