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Counties → Illinois

Peoria County, Illinois

SDWIS compliance plate

Sheet IL143 · Peoria County 83 sys · 7,041 viol · #351/3254

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

  • VIOL-SEVERE 78.3% flagged
  • HEALTH-MID 33.4% health
  • RANK-TOP #351/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-HIGH 100.0% detect
  • SRC-GW GW lead 87%
  • SYS-MID 83 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Vermilion County ( -0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Peoria County ranks #351 of 3,254 counties by people served, and #11 of 102 counties in Illinois. See methodology · corpus placement.

Peoria County standing, lower-flagged corpus third

Flagged-system rate 78.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 33.4% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #351 of 3,254 · #11 of 102 in Illinois.

Flagged-rate neighbourhood around Peoria County

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

0% 20% 40% 60% 80% 100% Sangamon · lowest Clay · near Peoria · this county Pulaski · highest 58.8% 77.8% 77.8% 78% 78.3% 79.3% 100%

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

Water Systems

System Name Population Violations PFAS
IL American-Peoria 137,575 20 Detected
Osf St Francis Hospital 10,000 20 -
Chillicothe 5,996 137 Detected
Peoria Heights 5,908 74 Detected
Pleasant Valley Pwd 3,783 58 Detected
Cat Mossville 3,000 235 -
T-L Rural Water District 2,665 19 -
Elmwood 2,058 111 -
Limestone-Walters Pwd 2,023 10 -
Princeville 1,901 155 -
Dunlap 1,603 19 -
Cat Tech Center 1,442 461 -
Hanna City 1,253 96 -
IL American-Glasford 1,193 602 -
Brimfield 856 52 -
Keystone Steel and Wire 700 195 -
Cat Mapleton /Mapleton 600 66 -
Freedom Oil Company (136945) 400 17 -
Christ Orchard 400 0 -
Deluxe Lake Estates MHP 325 52 -
Mapleton 261 233 -
Kingston Mines 259 766 -
Olive and Oak - Wedding and Events 250 9 -
Fox Creek Farms Water Company 203 43 -
Radnor Rod and Gun Club 200 44 -
Country Club BBQ 200 6 -
Fawn Hills Subdivision 183 32 -
Mossville United Methodist Chu 160 4 -
Evonik Corporation 150 81 -
Camp Wokanda 150 35 -
Cathys Cue and Brew 150 14 -
Farmington Sportsmens Club 150 14 -
Midwest Sports Complex 150 3 -
Top of the Hill Farm 150 8 -
St Marys School Bored Well 140 435 -
Edelstein Water Coop 113 886 -
One More at Oak Hill 100 19 -
Chillicothe Sportsmens Club 100 19 -
Valley Lakes Center Inc 100 41 -
Jubilee St Pk #1 Quail Meadows 100 64 -
Jubilee Cafe 100 5 -
Kickabrew Coffee Co 100 4 -
Ice Guys Water Kiosk 100 0 -
Chillicothe Rec Area Camp #2 82 13 -
Jubilee Water Company, Inc. 78 82 -
Brimfield Evangelical Free Church 70 16 -
Christ Alive Community Church (148536) 70 25 -
Korean Presbyterian Church 70 8 -
Santa Fe Estates Water Association 68 63 -
Berea Baptist Church 60 20 -

Compare beyond Illinois

Lower-flagged peers for Peoria County

Cross-state counties nearest Peoria County on flagged-system share (78.3%) and cumulative violation count (7,041). 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.