PlainWater

Henry County, Ohio

SDWIS compliance plate

Sheet OH069 · Henry County 23 sys · 2,210 viol · #1878/3254

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

  • VIOL-SEVERE 91.3% flagged
  • HEALTH-HIGH 53.9% health
  • RANK-MID #1878/3254
  • PHOTO-FINISH ±0.1 pp
  • PFAS-HIGH 100.0% detect
  • SRC-GW GW lead 70%
  • SYS-SMALL 23 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Miami County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Henry County ranks #1,878 of 3,254 counties by people served, and #78 of 88 counties in Ohio. See methodology · corpus placement.

Henry County standing, lower-flagged corpus third

Flagged-system rate 91.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 53.9% 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 #1,878 of 3,254 · #78 of 88 in Ohio.

Flagged-rate neighbourhood around Henry County

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

0% 20% 40% 60% 80% 100% Fayette · lowest Miami · near Jefferson · near Vinton · highest 78.6% 90.8% 91.2% 91.3% 91.4% 91.4% 100%

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

Water Systems

Compare beyond Ohio

Lower-flagged peers for Henry County

Cross-state counties nearest Henry County on flagged-system share (91.3%) and cumulative violation count (2,210). 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.