County profile · EPA SDWIS + UCMR5
Vermilion County, Illinois
41 SDWIS-listed public water systems serve 58,420 people in Vermilion County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 41
- SDWIS water systems Larger third of counties
- 3,428
- Total violations Upper third of counties
- 78.0%
- SDWIS systems w/ a violation Lower third of counties
- 25.0%
- UCMR5 PFAS rate (4 tested) Middle third of counties with tests
SDWIS compliance plate
Sheet IL183 · Vermilion County 41 sys · 3,428 viol · #857/3254
VIOL-SEVERE · HEALTH-MID · RANK-UPPER · PHOTO-FINISH · PFAS-MID · SRC-GW · SYS-MID · BOOK-FULL
- VIOL-SEVERE 78.0% flagged
- HEALTH-MID 23.0% health
- RANK-UPPER #857/3254
- PHOTO-FINISH ±0.3 pp
- PFAS-MID 25.0% detect
- SRC-GW GW lead 78%
- SYS-MID 41 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Peoria County (+ 0.3 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Vermilion County ranks #857 of 3,254 counties by people served, and #23 of 102 counties in Illinois. See methodology · corpus placement.
Vermilion County standing, lower-flagged corpus third
Flagged-system rate 78.0% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 23.0% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 25.0% is UCMR5 detect rate in the tested-pool middle third (≤ 33.3%) . Population served ranks #857 of 3,254 · #23 of 102 in Illinois.
Flagged-rate neighbourhood around Vermilion County
Lowest/highest poles plus in-state counties nearest Vermilion County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond Illinois
Lower-flagged peers for Vermilion County
Cross-state counties nearest Vermilion County on flagged-system share (78.0%) and cumulative violation count (3,428). 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.