Rock Island, Illinois
SDWIS compliance plate
Sheet IL161 · Rock Island 120 sys · 6,591 viol · #391/3254
VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-MID · SRC-GW · SYS-LARGE · BOOK-FULL
- VIOL-SEVERE 93.3% flagged
- HEALTH-LOW 11.1% health
- RANK-TOP #391/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-MID 44.4% detect
- SRC-GW GW lead 88%
- SYS-LARGE 120 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Lawrence County (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Rock Island ranks #391 of 3,254 counties by people served, and #14 of 102 counties in Illinois. See methodology · corpus placement.
Rock Island standing, mid-flagged corpus third
Flagged-system rate 93.3% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.1% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 44.4% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #391 of 3,254 · #14 of 102 in Illinois.
Flagged-rate neighbourhood around Rock Island
Lowest/highest poles plus in-state counties nearest Rock Island on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond Illinois
Mid-flagged peers for Rock Island
Cross-state counties nearest Rock Island on flagged-system share (93.3%) and cumulative violation count (6,591). 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.