PlainWater

Hardin County, Illinois

SDWIS compliance plate

Sheet IL069 · Hardin County 5 sys · 900 viol · #2889/3254

VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-TINY · BOOK-MOST

  • VIOL-SEVERE 100.0% flagged
  • HEALTH-LOW 3.8% health
  • RANK-BOTTOM #2889/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 80%
  • SYS-TINY 5 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Hardin County ranks #2,889 of 3,254 counties by people served, and #100 of 102 counties in Illinois. See methodology · corpus placement.

Hardin County standing, mid-flagged corpus third

Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 3.8% is health-based share at or below the lower third (≤ 10.3%) . No UCMR5 tests in this extract for Hardin County . Population served ranks #2,889 of 3,254 · #100 of 102 in Illinois.

Flagged-rate neighbourhood around Hardin County

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

0% 20% 40% 60% 80% 100% Sangamon · lowest Pulaski · highest Bond · near Massac · near 58.8% 100% 100% 100% 100% 100% 100%

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

Water Systems

System Name Population Violations PFAS
IL American-Rosiclare 1,387 6 -
IL American-Hardin County 1,373 18 -
Hardin County Water District No.1 843 337 -
Cave-IN-Rock 228 104 -
Elizabethtown 220 435 -

Compare beyond Illinois

Mid-flagged peers for Hardin County

Cross-state counties nearest Hardin County on flagged-system share (100.0%) and cumulative violation count (900). 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.