County NN001 County, Navajo Nation
SDWIS compliance plate
Sheet NN001 · County NN001 County 51 sys · 9,921 viol · #898/3254
VIOL-SEVERE · HEALTH-LOW · RANK-UPPER · GAP-SOLO · PFAS-MID · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-LOW 4.1% health
- RANK-UPPER #898/3254
- GAP-SOLO No peers
- PFAS-MID 25.0% detect
- SRC-GW GW lead 94%
- SYS-MID 51 systems
- BOOK-FULL 7/7 fields
According to EPA SDWIS county population served used on /counties, County NN001 County ranks #898 of 3,254 counties by people served, and #1 of 9 counties in Navajo Nation. See methodology · corpus placement.
County NN001 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 4.1% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 25.0% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #898 of 3,254 · #1 of 9 in Navajo Nation.
Water Systems
Compare beyond Navajo Nation
Mid-flagged peers for County NN001 County
Cross-state counties nearest County NN001 County on flagged-system share (100.0%) and cumulative violation count (9,921). 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.