Arapahoe County, Colorado
SDWIS compliance plate
Sheet CO005 · Arapahoe County 40 sys · 5,553 viol · #70/3254
VIOL-SEVERE · HEALTH-LOW · RANK-TOP · ABOVE-PEER · PFAS-HIGH · SRC-SW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 75.0% flagged
- HEALTH-LOW 3.6% health
- RANK-TOP #70/3254
- ABOVE-PEER +2.0 pp
- PFAS-HIGH 100.0% detect
- SRC-SW SW lead 50%
- SYS-MID 40 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Mesa County ( -2 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Arapahoe County ranks #70 of 3,254 counties by people served, and #2 of 64 counties in Colorado. See methodology · corpus placement.
Arapahoe County standing, lower-flagged corpus third
Flagged-system rate 75.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 3.6% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #70 of 3,254 · #2 of 64 in Colorado.
Flagged-rate neighbourhood around Arapahoe County
Lowest/highest poles plus in-state counties nearest Arapahoe County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond Colorado
Lower-flagged peers for Arapahoe County
Cross-state counties nearest Arapahoe County on flagged-system share (75.0%) and cumulative violation count (5,553). 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.