PlainWater

Piatt County, Illinois

SDWIS compliance plate

Sheet IL147 · Piatt County 15 sys · 969 viol · #2164/3254

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

  • VIOL-SEVERE 93.3% flagged
  • HEALTH-MID 23.1% health
  • RANK-LOWER #2164/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-SMALL 15 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Rock Island (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Piatt County ranks #2,164 of 3,254 counties by people served, and #74 of 102 counties in Illinois. See methodology · corpus placement.

Piatt County standing, mid-flagged corpus third

Flagged-system rate 93.3% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 23.1% 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 #2,164 of 3,254 · #74 of 102 in Illinois.

Flagged-rate neighbourhood around Piatt County

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

0% 20% 40% 60% 80% 100% Sangamon · lowest Piatt · this county Lawrence · near Pulaski · highest 58.8% 92.3% 93.3% 93.3% 93.3% 93.8% 100%

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

Water Systems

System Name Population Violations PFAS
Monticello 5,548 11 Clean
Bement 1,661 20 -
Cerro Gordo 1,433 4 -
Mansfield 939 31 -
White Heath Waterworks 685 45 -
Robert Allerton Park 500 11 -
Hammond 478 38 -
DE Land 446 268 -
Deland Weldon 280 423 -
Crossroads Church 250 29 -
Cisco 242 51 -
Lodge Church of God 110 15 -
Piatt County Nursing Home 93 0 -
Open Hearts Foursquare Church 75 16 -
Twice the Ice Monticello 25 7 -

Compare beyond Illinois

Mid-flagged peers for Piatt County

Cross-state counties nearest Piatt County on flagged-system share (93.3%) and cumulative violation count (969). 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.