Costilla County, Colorado
SDWIS compliance plate
Sheet CO023 · Costilla County 12 sys · 2,655 viol · #2990/3254
VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST
- VIOL-SEVERE 100.0% flagged
- HEALTH-LOW 5.0% health
- RANK-BOTTOM #2990/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-NONE No UCMR5 set
- SRC-GW GW lead 100%
- SYS-SMALL 12 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, Costilla County ranks #2,990 of 3,254 counties by people served, and #57 of 64 counties in Colorado. See methodology · corpus placement.
Costilla 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 5.0% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Costilla County . Population served ranks #2,990 of 3,254 · #57 of 64 in Colorado.
Flagged-rate neighbourhood around Costilla County
Lowest/highest poles plus in-state counties nearest Costilla County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| San Luis WSD | 629 | 29 | - |
| Costilla County WS | 561 | 116 | - |
| Ft Garland WSD | 477 | 152 | - |
| Blanca Town Of | 469 | 43 | - |
| Sierra Grande School District | 304 | 230 | - |
| Blanca Ft Garland MD | 108 | 66 | - |
| Garcia Domestic Wua | 100 | 288 | - |
| Trinchera Property Management Inc | 55 | 38 | - |
| Blanca Forestry Products | 50 | 205 | - |
| Viejo San Acacio | 45 | 12 | - |
| San Acacio Domestic WA | 40 | 676 | - |
| Lake Sanchez Estates | 34 | 800 | - |
Compare beyond Colorado
Mid-flagged peers for Costilla County
Cross-state counties nearest Costilla County on flagged-system share (100.0%) and cumulative violation count (2,655). 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. 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.