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Counties → Illinois

Whiteside County, Illinois

SDWIS compliance plate

Sheet IL195 · Whiteside County 62 sys · 1,695 viol · #1078/3254

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

  • VIOL-SEVERE 87.1% flagged
  • HEALTH-LOW 11.9% health
  • RANK-UPPER #1078/3254
  • PHOTO-FINISH ±0.4 pp
  • PFAS-HIGH 50.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 62 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Coles County (+ 0.4 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Whiteside County ranks #1,078 of 3,254 counties by people served, and #34 of 102 counties in Illinois. See methodology · corpus placement.

Whiteside County standing, lower-flagged corpus third

Flagged-system rate 87.1% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.9% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #1,078 of 3,254 · #34 of 102 in Illinois.

Flagged-rate neighbourhood around Whiteside County

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

0% 20% 40% 60% 80% 100% Sangamon · lowest Whiteside · this county Montgomery · near Pulaski · highest 58.8% 86.7% 87.1% 87.5% 87.5% 87.5% 100%

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

Water Systems

System Name Population Violations PFAS
IL American-Sterling 14,782 17 Clean
Rock Falls 8,620 142 Detected
Morrison 4,188 4 Clean
Fulton 3,346 21 Detected
Prophetstown 2,100 44 -
Erie 1,600 46 -
Albany 846 115 -
Tampico 689 15 -
Lyndon 537 46 -
Sterling Steel 500 10 -
Crystal Lake Recreation Beach 300 21 -
Morrison Rockwood St Park -Campground 250 8 -
Morrison Rockwood St Park - Lakeview 250 4 -
Montmorency School 250 205 -
Country Acres MHP (Whiteside County) 232 65 -
Kingdom Life Community Church 200 3 -
Crow Valley Campground 150 17 -
Morrison Rockwood St Park-Equestrian 150 8 -
Spring Valley Reformed Church 150 8 -
Riverside Estates MHP 120 114 -
Rock River Golf and Pool 120 2 -
Erie Campground 100 22 -
Blue Lake Resort 100 5 -
Leisure Lake Campground/E Side 100 6 -
Pjs Skybox 100 2 -
Our Savior Lutheran 85 0 -
Riverdale Preschool Center 80 78 -
Honeycutt Hill MHP LLC 75 41 -
The Happy Spot 75 10 -
Ifh Group 75 187 -
Ruffit Park (97121) 75 32 -
Leisure Lake Campground Entrance 75 4 -
The Forest Inn 75 6 -
Deer Valley Country Club 75 8 -
Newton Zion Reformed Church 65 11 -
Camp Merrill Benson 53 4 -
Rivers Edge Resort 50 4 -
Fulton Country Club 40 16 -
Aurelio's Cake Factory 25 0 -
Fenton United Methodist Church 25 7 -
Prophet Hills Country Club 25 8 -
Emersons 25 1 -
Hunters Sports Bar 2 25 10 -
Leisure Lake Campground Comfort 25 4 -
Harvest Time Bible Church Education 25 20 -
Harvest Time Bible Ch-Fellowsh 25 9 -
Harvest Time Bible Ch-Auditor 25 11 -
New Hope Baptist Church of Como 25 6 -
Sav a Lot Rock Falls 25 0 -
Kroger Store J-953 25 0 -

Compare beyond Illinois

Lower-flagged peers for Whiteside County

Cross-state counties nearest Whiteside County on flagged-system share (87.1%) and cumulative violation count (1,695). 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.