County profile · EPA SDWIS + UCMR5
Sierra County, New Mexico
22 SDWIS-listed public water systems serve 11,599 people in Sierra County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 22
- SDWIS water systems Middle third of counties
- 1,962
- Total violations Middle third of counties
- 95.5%
- SDWIS systems w/ a violation Middle third of counties
- 50.0%
- UCMR5 PFAS rate (2 tested) Upper third of counties with tests
SDWIS compliance plate
Sheet NM051 · Sierra County 22 sys · 1,962 viol · #2235/3254
VIOL-SEVERE · HEALTH-LOW · RANK-LOWER · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 95.5% flagged
- HEALTH-LOW 18.7% health
- RANK-LOWER #2235/3254
- PHOTO-FINISH ±0.3 pp
- PFAS-HIGH 50.0% detect
- SRC-GW GW lead 100%
- SYS-SMALL 22 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Bernalillo County ( -0.3 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Sierra County ranks #2,235 of 3,254 counties by people served, and #24 of 33 counties in New Mexico. See methodology · corpus placement.
Sierra County standing, mid-flagged corpus third
Flagged-system rate 95.5% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 18.7% 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 #2,235 of 3,254 · #24 of 33 in New Mexico.
Flagged-rate neighbourhood around Sierra County
Lowest/highest poles plus in-state counties nearest Sierra County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Truth OR Consequences | 6,783 | 169 | Clean |
| Elephant Butte Water System | 2,286 | 19 | Detected |
| Elephant Butte, City Of | 1,350 | 49 | - |
| Desert View RV Park | 220 | 1 | - |
| Hillsboro Mdwca | 167 | 59 | - |
| National Rcs Test Facility | 100 | 0 | - |
| Dam Site Historic District | 98 | 186 | - |
| Caballo Lake Mdwca | 95 | 197 | - |
| Lakeview RV Park | 66 | 302 | - |
| Monticello Canyon Dwca | 63 | 49 | - |
| Elephant Butte Lake State Park | 50 | 55 | - |
| Desertaire Water Company | 48 | 606 | - |
| Truth OR Consequences Municipal Airport | 40 | 14 | - |
| Rock Canyon Recreation Area | 33 | 17 | - |
| Monticello RV Park | 25 | 31 | - |
| South Monticello Recreation Area | 25 | 22 | - |
| Spaceport America | 25 | 9 | - |
| Caballo Lake RV Park | 25 | 1 | - |
| Caballo Lakeside Campground-State Parks | 25 | 17 | - |
| Percha Dam State Park | 25 | 7 | - |
| Bureau of Reclamation | 25 | 105 | - |
| Caballo Riverside Campground-State Park | 25 | 47 | - |
Compare beyond New Mexico
Mid-flagged peers for Sierra County
Cross-state counties nearest Sierra County on flagged-system share (95.5%) and cumulative violation count (1,962). 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.