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Counties → Illinois

Champaign County, Illinois

SDWIS compliance plate

Sheet IL019 · Champaign County 81 sys · 2,997 viol · #325/3254

VIOL-SEVERE · HEALTH-MID · RANK-TOP · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 71.6% flagged
  • HEALTH-MID 22.2% health
  • RANK-TOP #325/3254
  • PHOTO-FINISH ±0.2 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 99%
  • SYS-MID 81 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Jersey County ( -0.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Champaign County ranks #325 of 3,254 counties by people served, and #10 of 102 counties in Illinois. See methodology · corpus placement.

Champaign County standing, lower-flagged corpus third

Flagged-system rate 71.6% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 22.2% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #325 of 3,254 · #10 of 102 in Illinois.

Flagged-rate neighbourhood around Champaign County

Lowest/highest poles plus in-state counties nearest Champaign County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Sangamon · lowest Cook · near Jersey · near Pulaski · highest 58.8% 70.4% 70.5% 71% 71.4% 71.6% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
IL American-Champaign 150,000 7 Clean
Rantoul 13,000 16 Clean
U of I-Champaign 13,000 14 Clean
Mahomet 6,580 22 Clean
Sangamon Valley Pwd 5,300 30 Clean
IL American-Tolono 3,604 73 -
IL American-Fisher 2,026 10 -
Aqua Illinois-Philo 1,378 9 -
Homer 1,200 43 -
Thomasboro 1,066 40 -
Illini Prairie Rest Areas 1,000 6 -
Gifford 911 6 -
Ilur Liberty Commons MHP LLC 865 2 -
Ogden 750 43 -
Shadow Wood MHP 680 0 -
Heritage of Rantoul 500 37 -
Seymour Water District 392 25 -
Fountain Valley MHP 375 378 -
Ilur Woods Edge MHP LLC 373 0 -
Ivesdale 360 27 -
Ej Water-Dewey 350 79 -
IL American-Broadlands 330 137 -
Hardys Reindeer Ranch 324 10 -
Ludlow 308 3 -
Stonetown Oaks MHP LLC 280 29 -
Royal 273 25 -
Maplewood Mac LLC 270 8 -
Woodland Acres Mhc 230 16 -
Ilur Portfolio 5-Surbana Estates MHP LLC 209 16 -
Middle Fork River Forest Presv 200 25 -
Immanuel Lutheran Church (121194) 200 25 -
Pear Tree Estate Chapel 200 0 -
Faith Baptist Church (121103) 175 15 -
Longview 153 342 -
Penfield Pwd 150 25 -
Mahomet Sportsmen Club 150 6 -
Immanuel Lutheran Church (68544) 150 4 -
Gordon Hannagan Auction Co 150 5 -
Stagecoach at Gordyville 125 2 -
Valley View Manor 120 260 -
Ilur Portfolios - Carriage Estates LLC 115 4 -
Ehlers MHP 112 42 -
Country View Ests MHP 97 62 -
Shots N' Slots 80 2 -
East Side MHP 79 214 -
Prairieview JR. High School 67 169 -
Lds Rantoul 5031508 63 3 -
Ilur Portfolio 5 - Wilson MHP LLC 62 0 -
Ilur Portfolio 5 - Trailside MHP LLC 62 2 -
Schnucks-Champ 60 0 -

Compare beyond Illinois

Lower-flagged peers for Champaign County

Cross-state counties nearest Champaign County on flagged-system share (71.6%) and cumulative violation count (2,997). 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.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

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.