PlainWater

Custer County, Colorado

SDWIS compliance plate

Sheet CO027 · Custer County 16 sys · 959 viol · #2899/3254

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

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 17.1% health
  • RANK-BOTTOM #2899/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 81%
  • SYS-SMALL 16 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Custer County ranks #2,899 of 3,254 counties by people served, and #51 of 64 counties in Colorado. See methodology · corpus placement.

Custer 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 17.1% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Custer County . Population served ranks #2,899 of 3,254 · #51 of 64 in Colorado.

Flagged-rate neighbourhood around Custer County

Lowest/highest poles plus in-state counties nearest Custer 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
Round Mountain WSD 1,950 38 -
Sky Ranch Horn Creek 582 19 -
Alvarado Cg 4122 300 220 -
Ophir Creek No 4 186 24 -
Rainbow Trail Lutheran Camp 184 17 -
La Vista Cg 180 50 -
Spruce Cg 130 3 -
Ponderosa Cg 120 15 -
Davenport Cg No 2 72 28 -
St Charles Cg 60 9 -
Valley View Park Mobile Home Community 44 12 -
Historic Pines Ranch 39 109 -
Tv Hills Water 38 236 -
Lake Creek Cg 36 3 -
Hermit Basin Lodge 30 162 -
Spreadeagle HOA 13 14 -

Compare beyond Colorado

Mid-flagged peers for Custer County

Cross-state counties nearest Custer County on flagged-system share (100.0%) and cumulative violation count (959). 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.