PlainWater

Kendall County, Illinois

SDWIS compliance plate

Sheet IL093 · Kendall County 64 sys · 6,782 viol · #653/3254

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

  • VIOL-SEVERE 84.4% flagged
  • HEALTH-LOW 13.9% health
  • RANK-UPPER #653/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 98%
  • SYS-MID 64 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: McHenry County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Kendall County ranks #653 of 3,254 counties by people served, and #20 of 102 counties in Illinois. See methodology · corpus placement.

Kendall County standing, lower-flagged corpus third

Flagged-system rate 84.4% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.9% 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 #653 of 3,254 · #20 of 102 in Illinois.

Flagged-rate neighbourhood around Kendall County

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

0% 20% 40% 60% 80% 100% Sangamon · lowest Kendall · this county Shelby · near Pulaski · highest 58.8% 84.2% 84.4% 84.4% 84.6% 84.6% 100%

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

Water Systems

System Name Population Violations PFAS
Oswego 38,169 285 Clean
Yorkville 23,000 324 Clean
Plano 12,600 57 Clean
IL American-Valley Marina 1,102 7 -
Newark 986 8 -
Hoover Forest Preserve 800 4 -
Silver Springs State Park (94185) 750 14 -
Harvest Baptist Church Well 3 600 40 -
325 S Route 31 LLC 500 441 -
Harvest Baptist Church Well 2 400 9 -
Blackberry Hill Congregation of Jw 400 26 -
St Francis Xavier Church 375 26 -
Jellystone Park - Milbrook 371 23 -
Bristol Grade School 325 358 -
Fox Valley YMCA & Preschool 300 1,458 -
Harvest Baptist Church Well 1 300 12 -
Ashley Farms 225 64 -
Millbrook Junior High 200 81 -
Kendall County Fair Association 200 4 -
Parkview Christian Academy 171 693 -
Fox Lawn Homeowners Water Association 167 370 -
Lisbon Grade School 150 371 -
Cross Lutheran School 140 449 -
IL American-Hollis 107 14 -
Storybook Highlands 100 32 -
Newark Sportsmens Club 100 10 -
Dickson Valley Camp 100 4 -
P N a Youth Camp Assn 100 45 -
Whitetail Golf Club 100 22 -
Midwest Gas Co 100 34 -
Slc Inc LLC Plano 100 0 -
Slc Ice LLC Yorkville 100 0 -
Scl Ice, LLC 100 0 -
Morgan Creek 66 180 -
Bristol Tap 65 42 -
Kennedy Pointe 65 29 -
Ilg Greenhouse, LLC 65 0 -
Suzys Pizza 60 8 -
Stone City Softball Concession 50 26 -
Venue 5126 Inc 50 15 -
Last Chance Saloon (5876) 40 51 -
Jimbos Tavern 40 44 -
Helmar Lutheran Church 35 176 -
Ellis House and Equestrian Center 31 5 -
Dickson Valley Camp Gym 26 1 -
Dickson Valley Camp Dining Hall 26 1 -
Fox Bluff 25 6 -
Harris Forest Preserve 25 7 -
La Salle Manor 25 18 -
Fox Ranch Tavern 25 92 -

Compare beyond Illinois

Lower-flagged peers for Kendall County

Cross-state counties nearest Kendall County on flagged-system share (84.4%) and cumulative violation count (6,782). 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
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.