PlainWater

San Miguel County, Colorado

SDWIS compliance plate

Sheet CO113 · San Miguel County 20 sys · 4,325 viol · #1688/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 13.0% health
  • RANK-MID #1688/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-HIGH 50.0% detect
  • SRC-GW GW lead 75%
  • SYS-SMALL 20 systems
  • BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, San Miguel County ranks #1,688 of 3,254 counties by people served, and #30 of 64 counties in Colorado. See methodology · corpus placement.

San Miguel 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 13.0% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,688 of 3,254 · #30 of 64 in Colorado.

Flagged-rate neighbourhood around San Miguel County

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

0% 20% 40% 60% 80% 100% Broomfield · lowest Kiowa · highest Montezuma · near Gilpin · 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
Mountain Village Town Of 9,700 559 Detected
Telluride Town Of 7,900 285 Clean
Norwood Water Commission 1,700 387 -
Telluride Regional Airport 485 70 -
Aldasoro Ranch Hoc 412 389 -
Ilium Valley WS 322 67 -
Wilson Mesa 290 300 -
Ophir Town Of 193 733 -
Bivvi Hostel 162 73 -
San Bernardo HOA 132 210 -
Elk Run Homeowners Corporation 125 98 -
Telluride Ski Lift 5 106 17 -
Placerville Park 100 16 -
Last Dollar PUD 96 53 -
Down Valley Park 90 18 -
Sawpit Town Of 59 238 -
Matterhorn Cg 50 89 -
Sunshine Cg 46 17 -
Woods Lake Cg 26 31 -
Telluride Pines HOA 25 675 -

Compare beyond Colorado

Mid-flagged peers for San Miguel County

Cross-state counties nearest San Miguel County on flagged-system share (100.0%) and cumulative violation count (4,325). 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.